CN109384980A - A kind of flame-resistant sealing material and preparation method thereof - Google Patents
A kind of flame-resistant sealing material and preparation method thereof Download PDFInfo
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- CN109384980A CN109384980A CN201811273766.1A CN201811273766A CN109384980A CN 109384980 A CN109384980 A CN 109384980A CN 201811273766 A CN201811273766 A CN 201811273766A CN 109384980 A CN109384980 A CN 109384980A
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- acrylic fibers
- sealing material
- antioxidant
- flame
- diethylene glycol
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/18—Homopolymers or copolymers of nitriles
- C08L33/20—Homopolymers or copolymers of acrylonitrile
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The present invention relates to sealing material fields, specially a kind of flame-resistant sealing material and preparation method thereof, including following component: nitrile rubber 15-30kg, natural rubber 8-13kg, precipitated calcium carbonate 35-45kg, blanc fixe 50-70kg, attapulgite 15-30kg, magnesia 4-6kg, acrylic fibers pulp 15-30kg, mineral fibres 20-30kg, acrylic fibers chopped strand 4-6kg, aluminium hydroxide 45-80kg, deca-BDE 5-10kg, antimony oxide 4kg, zinc oxide 0.5-2kg, stearic acid 0.5-1kg, antioxidant D FC-34 1.0kg, diethylene glycol (DEG) 0.5kg, sulphur 0.6kg, captax 0.5kg, diphenylguanidine 0.25kg, effect of the present invention Well.
Description
Technical field
The present invention relates to sealing material field, specially a kind of flame-resistant sealing material and preparation method thereof.
Background technique
In the sealing of sealing element, such as sealing strip for automobile sunroof, door weather strip etc., it is chronically at and shines upon environment
Under, it is easy to aging, to lose sealing effect.
With the development of all trades and professions science and technology, innovation, increasingly higher demands, sealing element also proposed to rubber seal
It must be adapted for many media, the various occasions such as Ru Shui, oil, acid, open fire.This just need rubber slab have oil resistant, acid resistance,
And fire-retardant energy performance is prominent.The main restricting factor that rubber slab flame retardant property is obviously improved is fire proofing, for fire-retardant material
Material need select, generally include two aspect: 1., select have flame retardant property rubber 2., be added fire retardant.It is reacted by being added
Type fire retardant promotes rubber linear macromolecule to crosslink or in rubber polymer as intermediate, by rubber progress chemical modification
Ignition-proof element is imported on main chain, makes rubber molecule per se with flame resistance.
It is well known that currently, sealing material uses economy class antioxidant D FC-34 as additive mostly, to realize
Ageing-resistant effect, the universal anti-aging agent of low pollution, low price in antioxidant D FC-34 system amines antioxidants, to the hot oxygen of rubber
Aging, ozone aging and fatigue cracking have protective action, have inhibiting effect to variable valency metal, but antioxidant D FC-34 is deposited
Poor to the protective performance of illumination exposure, this significant deficiency of the product under illumination should not be used, currently, the method changed is exactly to replace
Change other anti-aging agents, but other anti-aging agents be difficult to achieve the effect that in field of sealing technology it is so good, my company be absorbed in plus
These sealing materials of work, therefore R&D team is duty-bound solves the problems, such as that antioxidant D FC-34 exists (at least in our company
The technical field of processing solves the problems, such as this).
Summary of the invention
The purpose of the present invention is to provide flame-resistant sealing materials and preparation method thereof, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme:
A kind of flame-resistant sealing material, which is characterized in that including following component: nitrile rubber 15-30kg, natural rubber 8-
13kg, precipitated calcium carbonate 35-45kg, blanc fixe 50-70kg, attapulgite 15-30kg, magnesia 4-6kg, acrylic fibers pulp
15-30kg, mineral fibres 20-30kg, acrylic fibers chopped strand 4-6kg, aluminium hydroxide 45-80kg, deca-BDE 5-10kg, three
Aoxidize two antimony 4kg, zinc oxide 0.5-2kg, stearic acid 0.5-1kg, antioxidant D FC-34 1.0kg, diethylene glycol (DEG) 0.5kg, sulphur
0.6kg, captax 0.5kg, diphenylguanidine 0.25kg.
Preferably, including following component: nitrile rubber 15kg, natural rubber 8kg, precipitated calcium carbonate 35kg, blanc fixe
50kg, attapulgite 15kg, magnesia 4kg, acrylic fibers pulp 15kg, mineral fibres 20kg, acrylic fibers chopped strand 4kg, hydroxide
Aluminium 45kg, deca-BDE 5kg, antimony oxide 4kg, zinc oxide 0.5kg, stearic acid 0.5kg, antioxidant D FC-34
1.0kg, diethylene glycol (DEG) 0.5kg, sulphur 0.6kg, captax 0.5kg, diphenylguanidine 0.25kg.
Preferably, including following component: nitrile rubber 30kg, natural rubber 13kg, precipitated calcium carbonate 45kg, blanc fixe
70kg, attapulgite 30kg, magnesia 6kg, acrylic fibers pulp 30kg, mineral fibres 30kg, acrylic fibers chopped strand 6kg, hydroxide
Aluminium 80kg, deca-BDE 10kg, antimony oxide 4kg, zinc oxide 2kg, stearic acid 1kg, antioxidant D FC-34 1.0kg, two
Glycol 0.5kg, sulphur 0.6kg, captax 0.5kg, diphenylguanidine 0.25kg.
Preferably, including following component: nitrile rubber 20kg, natural rubber 10kg, precipitated calcium carbonate 40kg, blanc fixe
60kg, attapulgite 20kg, magnesia 5kg, acrylic fibers pulp 20kg, mineral fibres 25kg, acrylic fibers chopped strand 5kg, hydroxide
Aluminium 50kg, deca-BDE 8kg, antimony oxide 4kg, zinc oxide 1.5kg, stearic acid 0.75kg, antioxidant D FC-34
1.0kg, diethylene glycol (DEG) 0.5kg, sulphur 0.6kg, captax 0.5kg, diphenylguanidine 0.25kg.
As another aspect of the present invention, a kind of preparation method of flame-resistant sealing material, which is characterized in that including sweet by two
Alcohol is pre-mixed under conditions of 45-46 DEG C with antioxidant D FC-34, stirs evenly.
Compared with prior art, the beneficial effects of the present invention are: the present invention solves product existing for antioxidant D FC-34
It is difficult to apply the defect under illumination exposure condition, and increases oil resistant of the invention, heat-resisting and air-tightness, the present invention solves
Rubber slab is not heat-insulated in use, not fire-retardant performance, is effectively widely applied in nuclear power, traffic, field of furniture.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment one
Preferably, including following component: nitrile rubber 15kg, natural rubber 8kg, precipitated calcium carbonate 35kg, blanc fixe
50kg, attapulgite 15kg, magnesia 4kg, acrylic fibers pulp 15kg, mineral fibres 20kg, acrylic fibers chopped strand 4kg, hydroxide
Aluminium 45kg, deca-BDE 5kg, antimony oxide 4kg, zinc oxide 0.5kg, stearic acid 0.5kg, antioxidant D FC-34
1.0kg, diethylene glycol (DEG) 0.5kg, sulphur 0.6kg, captax 0.5kg, diphenylguanidine 0.25kg.
Embodiment two
Preferably, including following component: nitrile rubber 20kg, natural rubber 10kg, precipitated calcium carbonate 40kg, blanc fixe
60kg, attapulgite 20kg, magnesia 5kg, acrylic fibers pulp 20kg, mineral fibres 25kg, acrylic fibers chopped strand 5kg, hydroxide
Aluminium 50kg, deca-BDE 8kg, antimony oxide 4kg, zinc oxide 1.5kg, stearic acid 0.75kg, antioxidant D FC-34
1.0kg, diethylene glycol (DEG) 0.5kg, sulphur 0.6kg, captax 0.5kg, diphenylguanidine 0.25kg.
Embodiment three
A kind of flame-resistant sealing material, which is characterized in that including following component: nitrile rubber 30kg, natural rubber 13kg, gently
Matter calcium carbonate 45kg, blanc fixe 70kg, attapulgite 30kg, magnesia 6kg, acrylic fibers pulp 30kg, mineral fibres 30kg, nitrile
Synthetic fibre chopped strand 6kg, aluminium hydroxide 80kg, deca-BDE 10kg, antimony oxide 4kg, zinc oxide 2kg, stearic acid 1kg,
Antioxidant D FC-34 1.0kg, diethylene glycol (DEG) 0.5kg, sulphur 0.6kg, captax 0.5kg, diphenylguanidine 0.25kg.
Above embodiments one to the preparation method that example IV uses all is: (1) spice: being mixed using DF-JBJ800 overturning
Material machine, 250~300kg of loaded volume, according to other components (component in addition to several components below) → aluminium hydroxide → anti-
The old specific charging sequence charging of agent DFC-34+ diethylene glycol (DEG) → nitrile rubber+natural rubber → mineral fibres → vulcanizing agent, then
Spice is carried out, spice temperature is 50 DEG C, and the spice time is 4 hours, and the curing time is 4.5 hours；(2) at: use CKCJ-
1.3 × 1.590 numerical control Cheng Zhangji control 90 DEG C of big roll temperature, 6 DEG C of small roll temperature, and size roller speed is 30 ms/min, at
4 tons of line pressure, advance and retreat roller speed is 20, and make into the large and small roller of machine be not only logical steam lead to cooling water again.
It is worth noting that: diethylene glycol (DEG) is pre-mixed under conditions of 45-46 DEG C with antioxidant D FC-34, is stirred evenly.
Table 1: the performance test of embodiment one to embodiment three
As can be seen from Table 1, embodiment two is most preferred embodiment.
Example IV
As a comparison, on the basis of example 2, cancel diethylene glycol (DEG) (not adding diethylene glycol (DEG)), other preparation method phases
Together, but cancel and diethylene glycol (DEG) and antioxidant D FC-34 are pre-mixed under conditions of 45-46 DEG C, stir evenly this important step.
Embodiment five
Sealing element made from the sealing material in market.
Embodiment six
Application No. is a kind of fire-retardant sealing rings disclosed in 201310430256.1.
Table 2: the performance test of example IV to embodiment six
As can be seen from Table 2, diethylene glycol (DEG) is not added, has been essentially identical to the existing sealing material in market (that is, losing wound
The property made, novelty).Sealing ring made from documents is in heat resistance of the invention (after 75 DEG C of * 168h under the performance of aging
Drop rate) under the conditions of, performance also reduced very much.
Certainly, it is that the present invention is most important that diethylene glycol (DEG), which is pre-mixed, stirs evenly under conditions of 45-46 DEG C with antioxidant D FC-34,
A ring, the step for be the accidental discovery of our operators, once-through operation is made mistakes product (the antioxidant D FC- at that time obtained
For 34 temperature at 45-46 DEG C, mistake pours into diethylene glycol (DEG), wants the antioxidant D FC-34 for adding another kind originally), it I had never expected production
The unimaginable effect of business.
Sealing strip service life produced by the present invention under sunlight irradiation, at least extends 27.5% relative to documents,
Situations such as general weather strip for automobile is using 4 years or so, and skylight will appear yin edema generation, sealing strip produced by the present invention exist
Under laboratory condition, using 40 days still there is no yin edema situation (the common weather strip for automobile in market use 29 days or so, i.e.,
There is yin edema situation), it simulates accordingly, show that the present invention can at least use 5.1 years, yin edema situation just occur, (this is experiment certainly
The equivalent analogy of number of chambers evidence, i.e. 4*1.275).Although an embodiment of the present invention has been shown and described, for the general of this field
For logical technical staff, it is possible to understand that can be carried out without departing from the principles and spirit of the present invention to these embodiments
A variety of change, modification, replacement and modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of flame-resistant sealing material, which is characterized in that including following component: nitrile rubber 15-30kg, natural rubber 8-
13kg, precipitated calcium carbonate 35-45kg, blanc fixe 50-70kg, attapulgite 15-30kg, magnesia 4-6kg, acrylic fibers pulp
15-30kg, mineral fibres 20-30kg, acrylic fibers chopped strand 4-6kg, aluminium hydroxide 45-80kg, deca-BDE 5-10kg, three
Aoxidize two antimony 4kg, zinc oxide 0.5-2kg, stearic acid 0.5-1kg, antioxidant D FC-34 1.0kg, diethylene glycol (DEG) 0.5kg, sulphur
0.6kg, captax 0.5kg, diphenylguanidine 0.25kg.
2. a kind of flame-resistant sealing material as described in claim 1, which is characterized in that including following component: nitrile rubber 15kg,
Natural rubber 8kg, precipitated calcium carbonate 35kg, blanc fixe 50kg, attapulgite 15kg, magnesia 4kg, acrylic fibers pulp 15kg,
Mineral fibres 20kg, acrylic fibers chopped strand 4kg, aluminium hydroxide 45kg, deca-BDE 5kg, antimony oxide 4kg, zinc oxide
0.5kg, stearic acid 0.5kg, antioxidant D FC-34 1.0kg, diethylene glycol (DEG) 0.5kg, sulphur 0.6kg, captax 0.5kg promote
Agent D0.25kg.
3. a kind of flame-resistant sealing material as described in claim 1, which is characterized in that including following component: nitrile rubber 30kg,
Natural rubber 13kg, precipitated calcium carbonate 45kg, blanc fixe 70kg, attapulgite 30kg, magnesia 6kg, acrylic fibers pulp 30kg,
Mineral fibres 30kg, acrylic fibers chopped strand 6kg, aluminium hydroxide 80kg, deca-BDE 10kg, antimony oxide 4kg, zinc oxide
2kg, stearic acid 1kg, antioxidant D FC-34 1.0kg, diethylene glycol (DEG) 0.5kg, sulphur 0.6kg, captax 0.5kg, promotor
D0.25kg。
4. a kind of flame-resistant sealing material as described in claim 1, which is characterized in that including following component: nitrile rubber 20kg,
Natural rubber 10kg, precipitated calcium carbonate 40kg, blanc fixe 60kg, attapulgite 20kg, magnesia 5kg, acrylic fibers pulp 20kg,
Mineral fibres 25kg, acrylic fibers chopped strand 5kg, aluminium hydroxide 50kg, deca-BDE 8kg, antimony oxide 4kg, zinc oxide
1.5kg, stearic acid 0.75kg, antioxidant D FC-34 1.0kg, diethylene glycol (DEG) 0.5kg, sulphur 0.6kg, captax 0.5kg promote
Agent D0.25kg.
5. a kind of preparation method of flame-resistant sealing material, which is characterized in that including by diethylene glycol (DEG) and antioxidant D FC-34 in 45-46
It is pre-mixed, stirs evenly under conditions of DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273766.1A CN109384980A (en) | 2018-10-30 | 2018-10-30 | A kind of flame-resistant sealing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273766.1A CN109384980A (en) | 2018-10-30 | 2018-10-30 | A kind of flame-resistant sealing material and preparation method thereof |
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| CN109384980A true CN109384980A (en) | 2019-02-26 |
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ID=65427005
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| CN201811273766.1A Pending CN109384980A (en) | 2018-10-30 | 2018-10-30 | A kind of flame-resistant sealing material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114621589A (en) * | 2021-12-30 | 2022-06-14 | 浙江国泰萧星密封材料股份有限公司 | Nuclear-grade high-strength asbestos-free fiber sealing material and preparation method thereof |
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|---|---|---|---|---|
| CN1263903A (en) * | 2000-02-16 | 2000-08-23 | 太仓市宝马密封材料有限公司 | Sealing elastomer material reinforced by non-asbestos fibres and technology for compressing it into plates |
| WO2010150090A1 (en) * | 2009-06-25 | 2010-12-29 | Defence Research & Development Organisation | An acoustic energy reflector |
| CN102212332A (en) * | 2011-04-06 | 2011-10-12 | 中国制浆造纸研究院 | Non-asbestos fiber compound sealing material |
| CN102675700A (en) * | 2011-03-15 | 2012-09-19 | 施中堂 | Environment-friendly oil-resistant damping shock absorption and flame-retardant gasket material for motor unit train |
| CN105524389A (en) * | 2015-12-29 | 2016-04-27 | 慈溪卡希尔密封材料有限公司 | An asbestos-free fiber compressed plate and a preparing method thereof |
-
2018
- 2018-10-30 CN CN201811273766.1A patent/CN109384980A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263903A (en) * | 2000-02-16 | 2000-08-23 | 太仓市宝马密封材料有限公司 | Sealing elastomer material reinforced by non-asbestos fibres and technology for compressing it into plates |
| WO2010150090A1 (en) * | 2009-06-25 | 2010-12-29 | Defence Research & Development Organisation | An acoustic energy reflector |
| CN102675700A (en) * | 2011-03-15 | 2012-09-19 | 施中堂 | Environment-friendly oil-resistant damping shock absorption and flame-retardant gasket material for motor unit train |
| CN102212332A (en) * | 2011-04-06 | 2011-10-12 | 中国制浆造纸研究院 | Non-asbestos fiber compound sealing material |
| CN105524389A (en) * | 2015-12-29 | 2016-04-27 | 慈溪卡希尔密封材料有限公司 | An asbestos-free fiber compressed plate and a preparing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114621589A (en) * | 2021-12-30 | 2022-06-14 | 浙江国泰萧星密封材料股份有限公司 | Nuclear-grade high-strength asbestos-free fiber sealing material and preparation method thereof |
| CN114621589B (en) * | 2021-12-30 | 2024-03-26 | 浙江国泰萧星密封材料股份有限公司 | Nuclear-grade high-strength asbestos-free fiber sealing material and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 223700 Guilin Road, Siyang Economic Development Zone, Suqian City, Jiangsu Province Applicant after: Jiangsu Saier Sealing Technology Co., Ltd Address before: 223700 Guilin Road, Siyang Economic Development Zone, Suqian City, Jiangsu Province Applicant before: JIANGSU SAIER SEALING TECHNOLOGIES Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190226 |