A method for producing polyvinyl chloride artificial leather based on synchronous internal plasticization of photosensitive response plasticizer

A photosensitive reaction, polyvinyl chloride technology, applied in the field of plastic processing, can solve problems such as affecting the quality and service life of finished leather, harm to consumers' health, etc., to inhibit the migration of plasticizers, solve the problem of toxicity, and achieve high compatibility. Effect

Active Publication Date: 2020-12-08
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of plasticizer is low in price, good in compatibility, and high in plasticizing efficiency, it will migrate from the finished leather to the environment, which not only affects the quality and service life of the finished leather, because phthalates have carcinogenic risks and Female reproductive toxicity, its migration will also cause harm to the health of consumers

Method used

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  • A method for producing polyvinyl chloride artificial leather based on synchronous internal plasticization of photosensitive response plasticizer
  • A method for producing polyvinyl chloride artificial leather based on synchronous internal plasticization of photosensitive response plasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: luggage leather manufacturing

[0020] (1) Preparation of photoresponsive plasticizer: Add 17 parts of 3-methyl-3H-diaziridine-3-propionic acid, 35 parts of 1- Ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, 24 parts of 4-dimethylaminopyridine, and keep the mixed system at 0-5 ° C for 10 minutes, then add 50 parts of 4- Add di-isooctyl hydroxyphthalate to the mixture, gradually rise to room temperature, and react for 10 hours. After the reaction, wash twice with 300 parts of 0.5mol / L hydrochloric acid solution and 300 parts of saturated sodium bicarbonate solution respectively , and then washed with 300 parts of distilled water until the pH of the washed water was 6-7, and finally distilled under reduced pressure to obtain a photosensitive reaction type diisooctyl phthalate plasticizer;

[0021] (2) Preparation of polyvinyl chloride tanning slurry: under the condition of avoiding light, the emulsion method polyvinyl chloride resin, photosensitiv...

Embodiment 2

[0025] Example 2: Manufacturing of Upholstery Leather

[0026] (1) Preparation of photoresponsive plasticizer: Add 24 parts of 3-methyl-3H-diaziridine-3-propane to 80 parts of anhydrous N,N-dimethylformamide under light-proof conditions acid, 48 parts of 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, 33 parts of 4-dimethylaminopyridine, and keep the mixed system at 0-5 ° C for 15 minutes, Then add 50 parts of 4-hydroxy dibutyl phthalate to the mixture, gradually rise to room temperature, and react for 10 hours. Each solution was washed twice, then washed with 300 parts of distilled water until the pH of the washed water was 6-7, and finally distilled under reduced pressure to obtain a photosensitive reaction type dibutyl phthalate plasticizer;

[0027] (2) Preparation of polyvinyl chloride tanning slurry: under light-proof conditions, according to conventional methods, the emulsion method polyvinyl chloride resin, photosensitive reaction type dibutyl phthalate pl...

Embodiment 3

[0031] Embodiment 3: the manufacture of automobile interior leather

[0032] (1) Preparation of photoresponsive plasticizer: Add 30 parts of 3-methyl-3H-diaziridine-3-propionic acid, 67 parts of Cyclohexylcarbodiimide, 42 parts of 4-dimethylaminopyridine, and keep the mixed system at 0-5 ° C for 20 minutes, then add 100 parts of 4-hydroxy diisodecyl phthalate to the mixture, gradually Rise to room temperature and react for 12 hours. After the reaction, wash twice with 500 parts of 0.5mol / L hydrochloric acid solution and 300 parts of saturated sodium bicarbonate solution, and then wash with 300 parts of distilled water until the pH of the washing water is 6-7 , and finally distilled under reduced pressure to obtain a photosensitive reaction type diisodecyl phthalate plasticizer;

[0033] (2) Preparation of polyvinyl chloride tanning slurry: Under light-proof conditions, according to conventional methods, compound polyvinyl chloride resin by emulsion method, photosensitive reac...

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Abstract

The invention discloses a method for manufacturing polyvinyl chloride artificial leather based on synchronous internal plasticization of a light-sensitive reaction type plasticizer. The method is characterized by comprising the following steps: introducing a biethylene imine light-sensitive group into an o-benzene plasticizer, carrying out synchronous ultraviolet radiation with a wavelength of 330-370nm while a polyvinyl chloride artificial leather coating is plasticized, promoting biethylene imine to rapidly generate active Cabbeen which is inserted into C-H bonds of polyvinyl chloride molecules, furthermore carrying out in-situ covalent grafting on the o-benzene plasticizer with a PVC (Polyvinyl Chloride) resin, thereby achieving synchronous internal plasticization of the polyvinyl chloride artificial leather coating. By adopting the method, conventional process steps of polyvinyl chloride artificial leather are not changed, the plasticization time of the polyvinyl chloride artificial leather is not prolonged, grafting reactions and polyvinyl chloride artificial leather processing are synchronously carried out, plasticizer migration can be effectively inhibited, the problem of toxicity caused by o-benzene plasticizer migration can be substantially solved, the durability and the service life of the polyvinyl chloride artificial leather can be prolonged, and practical engineering application values can be made.

Description

technical field [0001] The invention relates to a method for producing polyvinyl chloride artificial leather based on synchronous internal plasticization of a photosensitive response type plasticizer, belonging to the field of plastic processing. Background technique [0002] Polyvinyl chloride (PVC) artificial leather appeared in the early 1930s. It is a mixture composed of PVC resin, plasticizer, heat stabilizer, foaming agent, filler, pigment, etc., combined with the base fabric in a certain way. A kind of imitation leather plastic product, which has the advantages of bright color, light texture, high strength, wear resistance, folding resistance, acid and alkali resistance, etc., coupled with low cost and convenient processing, it has been widely used in people's daily production and life. application. [0003] Plasticizer is the most used additive in the manufacturing process of PVC artificial leather, and its addition amount is generally 50-120 parts of PVC mass. At ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/06D06N3/00C07D229/02
CPCC07D229/02D06N3/005D06N3/0059D06N3/0077D06N3/0097D06N3/06D06N2209/16D06N2211/28
Inventor 陈意潘思宇严孙贤杨高夫候德隆范浩军颜俊
Owner SICHUAN UNIV
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