CN101849719A - Production process of knitted impregnated PU (polyurethane) gloves applying methyl pyrrolidone - Google Patents
Production process of knitted impregnated PU (polyurethane) gloves applying methyl pyrrolidone Download PDFInfo
- Publication number
- CN101849719A CN101849719A CN200910048522A CN200910048522A CN101849719A CN 101849719 A CN101849719 A CN 101849719A CN 200910048522 A CN200910048522 A CN 200910048522A CN 200910048522 A CN200910048522 A CN 200910048522A CN 101849719 A CN101849719 A CN 101849719A
- Authority
- CN
- China
- Prior art keywords
- gloves
- knitted
- polyurethane
- dipped
- methyl pyrrolidone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004814 polyurethane Substances 0.000 title claims abstract description 77
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000002904 solvent Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000007598 dipping method Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 10
- 230000006837 decompression Effects 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 238000004064 recycling Methods 0.000 abstract description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 abstract 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 54
- 230000008901 benefit Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 231100000614 poison Toxicity 0.000 description 3
- 230000007096 poisonous effect Effects 0.000 description 3
- 229920004934 Dacron® Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 229920002892 amber Polymers 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 235000016936 Dendrocalamus strictus Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- SOROIESOUPGGFO-UHFFFAOYSA-N diazolidinylurea Chemical compound OCNC(=O)N(CO)C1N(CO)C(=O)N(CO)C1=O SOROIESOUPGGFO-UHFFFAOYSA-N 0.000 description 1
- 229960001083 diazolidinylurea Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 231100000171 higher toxicity Toxicity 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Gloves (AREA)
Abstract
The invention relates to a production process of knitted impregnated PU ( polyurethane) gloves. The process comprises the following steps of: impregnating the knitted gloves into a solvent, wherein the solvent is prepared from polyurethane resin and methyl pyrrolidone according to the proportion of 1.3-1:1.8, and the polyurethane resin is synthesized with the participation of methyl pyrrolidone; carrying out the water bath treatment on the impregnated knitted gloves; drying the impregnated knitted gloves after the water bath treatment, wherein the drying time is 50-60min, and the drying temperature is at 100-110 DEG C; and recycling methyl pyrrolidone in the solvent from the water for the water bath with the vacuum depressurization method. The invention also provides a solvent for the production process of knitted impregnated PU gloves, which is prepared from polyurethane resin and methyl l pyrrolidone according to a certain proportion. Meanwhile, the invention provides gloves produced according to the production process of the knitted impregnated PU gloves.
Description
Technical field
The present invention relates to a kind of process for producing knitted and dipped PU (polyurethane) gloves, especially a kind of use methyl pyrrolidone (NMP) replaces dimethyl formamide (DMF) to produce the technology of knitted and dipped PU (polyurethane) gloves as solvent.
Background technology
With knitting inner bag gloves is the security protection gloves of base material dipping PU resin, with its rubber shoe latex layer approach, wear with comfortable, have grease proofing preferably, anti-wear performance, a low cost and other advantages, become the staple product in the safety gloves of international market, volume of production and marketing constantly rises in recent years.But produce this kind PU dipping gloves, need to use dimethyl formamide (DMF) as solvent, and DMF has higher toxicity, residual as DMF is arranged in the gloves, dress the back Diazolidinyl Urea; Simultaneously, because of using DMF, will impact aborning the enterprise employee health protection as solvent.Because PU dipping gloves use DMF to have above defective, European Union determines, since in May, 2009, bans use of the product of making solvent with DMF, comprises the gloves product, and this will bring tremendous influence to gloves plant produced, outlet.
Simultaneously, DMF also brings harm to health of operators in removal process, and the rate of recovery is limited in the traditional handicraft in addition, not only pollutes the thing discharging, can not effectively reduce production costs.
Summary of the invention
The object of the present invention is to provide a kind of process for producing knitted and dipped PU (polyurethane) gloves, it adopts methyl pyrrolidone (NMP) preparation solvent to produce the PU gloves.Methyl pyrrolidone is nontoxic substantially, is used to replace poisonous dimethyl formamide (DMF), and the skin that can avoid the PU gloves that make to stimulate the user protects simultaneously that employee's in the production process is healthy.This technical maturity, stable has good economic benefit.
Another purpose of the present invention is to provide a kind of process for producing knitted and dipped PU (polyurethane) gloves, it adopts methyl pyrrolidone (NMP) preparation solvent to produce the PU gloves, overcome the high viscosity that makes solvent, obtained the unification of product quality and economic benefit, stable processing technique, reliable.
Another purpose of the present invention is to provide a kind of process for producing knitted and dipped PU (polyurethane) gloves; it effectively reclaims solvent after production process finishes, thereby reduces production costs; reduce the discharging of pollutant, help also in the removal process protecting that the employee's is healthy.
Another purpose of the present invention is to provide a kind of solvent that is used for process for producing knitted and dipped PU (polyurethane) gloves; it adopts the methyl pyrrolidone preparation; be used to replace poisonous dimethyl formamide (DMF); the skin that can avoid the PU gloves that make to stimulate the user protects simultaneously that employee's in the production process is healthy.
Another purpose of the present invention is to provide a kind of knitted and dipped PU (polyurethane) gloves, does not use poisonous dimethyl formamide (DMF) in its production process, and the skin that can avoid the PU gloves that make to stimulate the user protects simultaneously that employee's in the production process is healthy.
For reaching above purpose, the invention provides a kind of process for producing knitted and dipped PU (polyurethane) gloves, comprising:
Knitted gloves is impregnated in the solvent, and wherein, this solvent is prepared in 1: 1.3～1: 1.8 ratio by polyurethane resin and methyl pyrrolidone, and this polyurethane resin is participated in synthetic by methyl pyrrolidone;
This knitted gloves behind the dipping is carried out water bath processing;
This knitted gloves after the water bath processing is dried, and wherein, drying time is 50～60 minutes, and bake out temperature is 100～110 ℃; And
From the water-bath water, reclaim methyl pyrrolidone in this solvent with the vacuum decompression method.
The present invention provides a kind of solvent that is used for this process for producing knitted and dipped PU (polyurethane) gloves simultaneously, is prepared in proportion by polyurethane resin and methyl pyrrolidone.
The present invention provides a kind of usefulness gloves that above-mentioned process for producing knitted and dipped PU (polyurethane) gloves makes simultaneously.
These purposes of the present invention, characteristics and advantage will be below the specific embodiment and claim in detailed exposure.
The specific embodiment
The present invention is a kind of process for producing knitted and dipped PU (polyurethane) gloves, comprising:
Knitted gloves is impregnated in the solution, and wherein, this solvent is prepared in proportion by polyurethane resin and NMP (methyl pyrrolidone); And
This knitted gloves behind the dipping is carried out water bath processing.
Particularly, in this solution, polyurethane resin and NMP (methyl pyrrolidone) configuration proportion is preferably 1: 1.3～and 1: 1.8, this solution viscosity for preparing is preferably 500～600 ambers.Control suitable viscosity and make that gloves are easier in process of production and from this solvent, take out, improve the adsorptivity of this solvent, alleviate the workload of subsequent recovery.
Particularly, this polyurethane resin is participated in synthetic by methyl pyrrolidone.Can not directly apply in the production process of this knitted and dipped PU (polyurethane) gloves by the synthetic polyurethane resin that obtains, must be diluted,, guarantee again effectively to be adsorbed onto on this knitted gloves simultaneously, guarantee the quality of product to increase flowability.The present invention adopts synthetic this polyurethane resin of methyl pyrrolidone through a large amount of experiments and adjustment, dilutes with methyl pyrrolidone again, and an optimized proportion scope is provided.
This knitted gloves is nylon or dacron thread knitted gloves.Particularly, flood these gloves and comprise: soaking paste 10～60 seconds, and drenched slurry 1～10 minute.Because this solvent viscosity is higher, help the technology of the present invention with respect to original employing DMF, prolonged the pouring slurry time, further to improve the quality of products and the economic benefit of technology.
The purpose of water bath processing is to solidify this knitted gloves, displaces the solvent on this knitted gloves, simultaneously this knitted gloves is cleaned.Particularly, water bath processing is carried out in three tanks successively, and wherein, the first groove water temperature is 30～35 ℃, second and the three-flute water temperature be 50～55 ℃.
Process for producing knitted and dipped PU (polyurethane) gloves step provided by the invention is simple, uses NMP (methyl pyrrolidone) preparation solvent, and safety and Health can not cause damage to the operative employee in user and the production process.Simultaneously, through checking repeatedly, this process for producing knitted and dipped PU (polyurethane) gloves is reliable and stable, can guarantee to make product quality, is suitable for promoting on a large scale.
This process for producing knitted and dipped PU (polyurethane) gloves further comprises:
From the water-bath water, reclaim NMP (methyl pyrrolidone) in this solvent with the vacuum decompression method.
The height of the rate of recovery has directly determined the economic benefit of technology, and unrenewable solvent is wasted, and also can pollute environment after the discharging simultaneously.In addition, when solvent boiling point is higher, it is reclaimed meeting consume a large amount of heats, improved production cost, also not environmental protection.The present invention adopts vacuum decompression, can reduce the recovery heating-up temperature, guarantees to reclaim material quality and improves the recovery safety coefficient.
The solvent that process for producing knitted and dipped PU (polyurethane) gloves provided by the invention uses is NMP (methyl pyrrolidone), pollutes for a short time, is more further reduced at waste discharge after recycling, and helps protecting environment, reduces production costs simultaneously.
NMP (methyl pyrrolidone) has that toxicity is low, boiling point is high, dissolving power is strong, nonflammable, biodegradable, recyclable utilization, advantage such as safe in utilization, be widely used in fields such as petrochemical industry, agricultural chemicals, medicine, electronic material, do not produced as yet in the knitted and dipped gloves product of PU.
This products material has slight spread effect to skin, do not see absorption, after using the synthetic polyamino resin of this solvent and being configured to solution, in producing PU dipping gloves process, by repeatedly water-bath, baking operation, after producing PU dipping gloves, it is residual not have NMP (methyl pyrrolidone) in the product substantially, and human body skin is not had excitant and corrosiveness fully.But this solution viscosity height need Comparative Examples make adjustment when configuration solution, and pass through aborning dipping stock tank and the control of impregnation room temperature, and the timely adjustment solution viscosity is to reach the purpose of ordinary production.Particularly, because this solvent viscosity height of the present invention just strengthens solvent ratios when configuration, generally than the high 5-10% of polyurethane resin ratio that uses the DMF configuration.
This process for producing knitted and dipped PU (polyurethane) gloves further comprises:
This knitted gloves after the water bath processing is dried, and wherein, drying time is 50～60 minutes, and bake out temperature is 100～110 ℃.
Below for according to a preferred embodiment of the present invention:
1,1 part of polyurethane resin, NMP (methyl pyrrolidone) stir for 1.6 parts, park 4 hours stand-by;
2, use nylon or dacron thread knitted gloves base to make carrier;
3, resin viscosity 500～600 ambers that prepare;
4, the gloves base is enclosed within resin pickup on the fingerprint (soaking paste) 20～30 seconds, drenched slurry 5 minutes;
5, soaking paste is good gloves steep in three to four tanks successively: 30～35 ℃ of the first groove water temperatures, second and 50～55 ℃ of three-flute water temperatures;
6, the PU dipping gloves that soak water advanced oven for drying 50～60 minutes, 100～110 ℃ of oven temperatures;
7, the PU gloves are taken off from fingerprint in the oven dry back;
8, check, packing, warehouse-in;
9, the waste water that soaks tank behind the resin pickup reclaims NMP (methyl pyrrolidone) solvent by retracting device.
By the foregoing description, purpose of the present invention is by in full force and effect having reached.The personage who is familiar with this skill should be understood that the content that the present invention includes but be not limited to describe in the top specific embodiment.Any modification that does not depart from function of the present invention and structural principle all will be included in the scope of claims.
Claims (10)
1. process for producing knitted and dipped PU (polyurethane) gloves comprises:
Knitted gloves is impregnated in the solvent, and wherein, this solvent is by polyurethane resin and methyl pyrrolidone preparation in 1: 1.3 in proportion～1: 1.8; And
This knitted gloves behind the dipping is carried out water bath processing.
2. process for producing knitted and dipped PU (polyurethane) gloves according to claim 1, wherein, this polyurethane resin is participated in synthetic by methyl pyrrolidone.
3. process for producing knitted and dipped PU (polyurethane) gloves according to claim 1, wherein, flood these gloves and comprise: soaking paste 10～60 seconds, and drenched slurry 1～10 minute.
4. process for producing knitted and dipped PU (polyurethane) gloves according to claim 2, wherein, flood these gloves and comprise: soaking paste 10～60 seconds, and drenched slurry 1～10 minute.
5. process for producing knitted and dipped PU (polyurethane) gloves according to claim 4, wherein, water bath processing is carried out in three tanks successively, wherein, the first groove water temperature is 30～35 ℃, second and the three-flute water temperature be 50～55 ℃.
6. process for producing knitted and dipped PU (polyurethane) gloves according to claim 5 further comprises: this knitted gloves after the water bath processing is dried, and wherein, drying time is 50～60 minutes, and bake out temperature is 100～110 ℃.
7. process for producing knitted and dipped PU (polyurethane) gloves according to claim 1 further comprises: usefulness vacuum decompression method reclaims the methyl pyrrolidone in this solvent from the water-bath water.
8. process for producing knitted and dipped PU (polyurethane) gloves according to claim 6 further comprises: usefulness vacuum decompression method reclaims the methyl pyrrolidone in this solvent from the water-bath water.
9. knitted and dipped PU (polyurethane) gloves of producing according to claim 1,2,3,4,5,6,7 or 8 described process for producing knitted and dipped PU (polyurethane) gloves.
10. a solvent that is used for process for producing knitted and dipped PU (polyurethane) gloves was prepared by polyurethane resin and methyl pyrrolidone in 1: 1.3 in proportion～1: 1.8, and wherein, this polyurethane resin is participated in synthetic by methyl pyrrolidone.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048522A CN101849719A (en) | 2009-03-30 | 2009-03-30 | Production process of knitted impregnated PU (polyurethane) gloves applying methyl pyrrolidone |
| US12/418,254 US8241705B2 (en) | 2009-03-30 | 2009-04-03 | Process for producing polyurethane coated gloves |
| EP09251530A EP2220952A1 (en) | 2009-03-30 | 2009-06-11 | Process for producing polyurethane coated gloves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048522A CN101849719A (en) | 2009-03-30 | 2009-03-30 | Production process of knitted impregnated PU (polyurethane) gloves applying methyl pyrrolidone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101849719A true CN101849719A (en) | 2010-10-06 |
Family
ID=42813299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910048522A Pending CN101849719A (en) | 2009-03-30 | 2009-03-30 | Production process of knitted impregnated PU (polyurethane) gloves applying methyl pyrrolidone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101849719A (en) |
-
2009
- 2009-03-30 CN CN200910048522A patent/CN101849719A/en active Pending
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20101006 |