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WO2019006670A1 - Décapant de peinture à base de solvant, et procédé associé pour enlever de la peinture d'une pièce - Google Patents

Décapant de peinture à base de solvant, et procédé associé pour enlever de la peinture d'une pièce Download PDF

Info

Publication number
WO2019006670A1
WO2019006670A1 PCT/CN2017/091737 CN2017091737W WO2019006670A1 WO 2019006670 A1 WO2019006670 A1 WO 2019006670A1 CN 2017091737 W CN2017091737 W CN 2017091737W WO 2019006670 A1 WO2019006670 A1 WO 2019006670A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
parts
paint
solvent
based paint
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.)
Ceased
Application number
PCT/CN2017/091737
Other languages
English (en)
Chinese (zh)
Inventor
方招娣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Changhongtai Technology Co Ltd
Original Assignee
Shenzhen Changhongtai Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Changhongtai Technology Co Ltd filed Critical Shenzhen Changhongtai Technology Co Ltd
Priority to PCT/CN2017/091737 priority Critical patent/WO2019006670A1/fr
Publication of WO2019006670A1 publication Critical patent/WO2019006670A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D9/00—Chemical paint or ink removers
    • C09D9/04—Chemical paint or ink removers with surface-active agents

Definitions

  • the present invention relates to the field of surface treatment technology, and in particular to a solvent type paint stripper and its application and a workpiece stripping method.
  • the surface treatment technology of the workpiece is usually applied.
  • the surface treatment of aluminum, iron and their alloys goes deep into all walks of life.
  • most of the work needs to be pretreated before surface treatment, for example, cleaning, decontamination and degreasing, and stripping is required for some specific workpieces.
  • the coating needs to be recoated and the old coating needs to be removed before repainting.
  • Paint strippers usually use the penetration of solvent molecules to swell, soften, wrinkle and dissolve the crosslinked polymer material under the action of activators, cosolvents and other components, and peel off off the surface of the substrate.
  • Some paint strippers contain methylene chloride, phenol, toluene solvent and hydrofluoric acid. These paint strippers are highly toxic and highly corrosive to the substrate.
  • a solvent-based paint remover which is safe and effective and which is less corrosive to a substrate, and an application thereof and a paint stripping method of the workpiece are provided.
  • a solvent-based paint stripper comprising the following components in parts by weight: 60-100 parts of propylene glycol butyl ether, 10-30 parts of glacial acetic acid, 10-20 parts of benzyl alcohol, 5-20 parts of a Phenol, 1-4 parts sodium alkylbenzene sulfonate.
  • a workpiece stripping method comprising the steps of: formulating a solvent-based paint stripper as described above; pouring a paint stripper into a paint strip; immersing the paint workpiece in the bath, the paint film is thicker
  • the workpiece can be first smeared with a knife and then immersed in the paint strip. After the coating on the surface of the workpiece is foamed or wrinkled, it is taken out, and the workpiece is placed in clean water to rinse or rinse, and the coating is separated from the surface of the workpiece.
  • the solvent type paint stripper is used for surface coating or plastic layer removal of a metal workpiece.
  • a solvent-based paint stripper comprising the following components in parts by weight: 60-100 parts of propylene glycol butyl ether, 10-30 parts of glacial acetic acid, 10-20 parts of benzyl alcohol, 5-20 parts of A Phenol, 1-4 parts sodium alkylbenzene sulfonate.
  • a workpiece stripping method comprising the steps of: formulating a solvent-based paint remover as described above; pouring a paint stripper into a paint strip; immersing the paint workpiece in the bath, the paint film is thick
  • the workpiece can be first smeared with a knife and then immersed in the paint strip. After the coating on the surface of the workpiece is foamed or wrinkled, it is taken out, and the workpiece is placed in clean water to rinse or rinse, and the coating is separated from the surface of the workpiece.
  • the solvent-based paint stripper is used for surface coating or plastic layer removal of a metal workpiece.
  • This embodiment provides a solvent-based paint stripper comprising the following components in parts by weight: 60-1 00 parts of propylene glycol butyl ether, 10-30 parts of glacial acetic acid, 10-20 parts of benzyl alcohol, 5-20 parts of cresol, 1-4 parts of sodium alkylbenzene sulfonate.
  • the parts by weight of the propylene glycol butyl ether are preferably from 70 to 90.
  • the glacial acetic acid is preferably 15-25 parts by weight.
  • the parts by weight of benzyl alcohol are preferably 12-18.
  • the cresol is preferably 10-15 parts by weight.
  • the sodium alkylbenzenesulfonate is preferably 2-3 parts by weight.
  • the stripping agent stripping mechanism of the embodiment is: using propylene glycol butyl ether as a solvent, and having a low molecular weight, it can quickly penetrate into the coating layer after the paint stripping, so that the paint film softens and swells, and falls off as soon as possible.
  • the dissolving power is centered, so that the peeled coating is not melted in the paint stripper, which contributes to the service life of the paint stripper.
  • Benzyl alcohol is used as a co-solvent to enhance the stripping effect.
  • Glacial acetic acid and cresol act as activators to accelerate the separation of the coating from the substrate.
  • Sodium alkylbenzene sulfonate acts as a retarder to form a film on the surface of the solution to close the surface.
  • the solvent in the paint stripper is difficult to volatilize and improves the paint stripping effect.
  • the above solvent-based paint stripping agent is mainly used for surface coating or plastic layer removal of metal workpieces.
  • the metal workpiece can be aluminum, iron, zinc alloy, etc.
  • the coating can be various types of electrophoretic paint, baking varnish, etc., or can be spray-coated.
  • the aluminum stripping method includes the following steps: Pour the stripping liquid into the stripping tank, and then immerse the stripped workpiece in the product. The thicker film can be scratched to the metal substrate. Re-immersion In the liquid. After the coating on the surface of the workpiece is blistered or wrinkled, take it out, rinse or rinse the workpiece in clean water, and the coating will be clean and completely detached from the workpiece.
  • the impregnation time is 1-10 minutes.
  • the above solvent-based paint remover adopts the combination of the above-mentioned formula components, does not use strong corrosive concentrated sulfuric acid, has low corrosivity to the substrate, is safe and environmentally friendly, and the organic paint stripping agent used for the solvent type paint remover is highly efficient.
  • the expansion and peeling type paint remover removes the paint film by osmotic expansion, and the paint stripping speed is fast and the service life is long.
  • composition range, preparation method, and use effect of the above paint remover are exemplified by a plurality of examples.
  • the paint stripping method is as follows: the solvent-based paint stripper is added to the paint strip; the lacquered workpiece is immersed in the bath for 5 minutes, taken out, the surface of the workpiece is observed, the coating is foamed off, and the workpiece is placed. Rinse into clean water, the workpiece is clean and free of residue, no corrosion.
  • the stripping method is as follows: the solvent-based paint stripper is added to the paint strip; the lacquered workpiece is immersed in the bath for 5 minutes, taken out, the surface of the workpiece is observed, the coating is foamed off, and the workpiece is placed Rinse into clean water, the workpiece is clean and free of residue, no corrosion.
  • the paint stripping method is as follows: adding the configured solvent type paint stripper to the paint strip; immersing the paint workpiece in the tank 5 minutes in the liquid, take out, observe the surface of the workpiece, the coating foaming off, the workpiece is washed in clean water, the workpiece is clean and free of residue, no corrosion.
  • the paint stripping method is as follows: the solvent-based paint stripper is added to the paint strip; the lacquered workpiece is immersed in the bath for 5 minutes, taken out, the surface of the workpiece is observed, the coating is foamed off, and the workpiece is placed. Rinse into clean water, the workpiece is clean and free of residue, no corrosion.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention porte sur un décapant de peinture à base de solvant et sur un procédé associé pour enlever de la peinture d'une pièce. Le décapant de peinture à base de solvant est constitué des constituants suivants en parties en poids : de 60 parties à 100 parties d'éther butylique de propanediol, de 10 parties à 30 parties d'acide acétique glacial, de 10 parties à 20 parties d'alcool benzylique, de 5 parties à 20 parties de crésol et de 1 partie à 4 parties d'alkylbenzène sulfonate de sodium. Le procédé pour enlever de la peinture comprend les étapes consistant à : préparer un décapant de peinture à base de solvant ; verser le décapant de peinture dans un réservoir d'élimination de peinture ; immerger une pièce avec de la peinture dans la solution dans le réservoir, peindre une pièce avec un film de peinture plus épais pouvant être ouvert d'abord à l'aide d'un couteau, puis la pièce pouvant être immergée dans le réservoir d'élimination de peinture ; et après un revêtement sur la surface des bulles ou des rides de la pièce, retirer la pièce, et placer la pièce dans de l'eau pour un lavage ou un rinçage, et le revêtement étant séparé de la surface de la pièce. L'acide sulfurique concentré hautement corrosif n'est pas contenu dans le décapant de peinture à base de solvant, ce qui ne génère pas de corrosion sur un substrat ; et au moyen de l'effet d'expansion osmotique, le film de peinture est décollé sous forme de flocons, la vitesse d'enlèvement de peinture est élevée et la durée de vie est longue.
PCT/CN2017/091737 2017-07-04 2017-07-04 Décapant de peinture à base de solvant, et procédé associé pour enlever de la peinture d'une pièce Ceased WO2019006670A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/091737 WO2019006670A1 (fr) 2017-07-04 2017-07-04 Décapant de peinture à base de solvant, et procédé associé pour enlever de la peinture d'une pièce

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/091737 WO2019006670A1 (fr) 2017-07-04 2017-07-04 Décapant de peinture à base de solvant, et procédé associé pour enlever de la peinture d'une pièce

Publications (1)

Publication Number Publication Date
WO2019006670A1 true WO2019006670A1 (fr) 2019-01-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/091737 Ceased WO2019006670A1 (fr) 2017-07-04 2017-07-04 Décapant de peinture à base de solvant, et procédé associé pour enlever de la peinture d'une pièce

Country Status (1)

Country Link
WO (1) WO2019006670A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI712448B (zh) * 2017-03-24 2020-12-11 日商旭化成股份有限公司 膜蒸餾用多孔質膜及膜蒸餾用模組之運轉方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464477A (en) * 1992-09-18 1995-11-07 Crest Ultrasonics Corporation Process for cleaning and drying ferrous surfaces without causing flash rusting
CN1944547A (zh) * 2006-10-11 2007-04-11 中国化工建设总公司常州涂料化工研究院 脱漆剂及其制备方法和使用方法
CN103937322A (zh) * 2014-04-23 2014-07-23 中国人民解放军第五七一九工厂 一种无水脱漆剂组合物
CN104151918A (zh) * 2014-08-28 2014-11-19 山东威达机械股份有限公司 一种中性环保脱漆剂
CN104194467A (zh) * 2014-09-18 2014-12-10 合肥工业大学 一种聚氨酯类漆包线水基脱漆剂
US9593247B2 (en) * 2012-02-10 2017-03-14 Atotech Deutschland Gmbh Composition and method for removal of organic paint coatings from substrates

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464477A (en) * 1992-09-18 1995-11-07 Crest Ultrasonics Corporation Process for cleaning and drying ferrous surfaces without causing flash rusting
CN1944547A (zh) * 2006-10-11 2007-04-11 中国化工建设总公司常州涂料化工研究院 脱漆剂及其制备方法和使用方法
US9593247B2 (en) * 2012-02-10 2017-03-14 Atotech Deutschland Gmbh Composition and method for removal of organic paint coatings from substrates
CN103937322A (zh) * 2014-04-23 2014-07-23 中国人民解放军第五七一九工厂 一种无水脱漆剂组合物
CN104151918A (zh) * 2014-08-28 2014-11-19 山东威达机械股份有限公司 一种中性环保脱漆剂
CN104194467A (zh) * 2014-09-18 2014-12-10 合肥工业大学 一种聚氨酯类漆包线水基脱漆剂

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI712448B (zh) * 2017-03-24 2020-12-11 日商旭化成股份有限公司 膜蒸餾用多孔質膜及膜蒸餾用模組之運轉方法
US11352270B2 (en) 2017-03-24 2022-06-07 Asahi Kasei Kabushiki Kaisha Porous membrane for membrane distillation, and method for operating membrane distillation module

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