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Dyeable environment-friendly polyurethane elastomer and preparation method thereof

A polyurethane elastomer and environment-friendly technology, applied in the field of polyurethane materials, can solve the problems that polyurethane elastomers are not easy to dye, do not meet safety and environmental protection requirements, etc., and achieve the effects of bright color, environmental protection and safe production, and increased dyeability.

Inactive Publication Date: 2020-06-16
高鼎精细化工(昆山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention provides a dyeable environment-friendly polyurethane elastomer and its preparation method, which solves the technical problems that the polyurethane elastomer is not easy to dye and does not meet the requirements of safety and environmental protection

Method used

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  • Dyeable environment-friendly polyurethane elastomer and preparation method thereof
  • Dyeable environment-friendly polyurethane elastomer and preparation method thereof

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preparation example Construction

[0031] A kind of preparation method of dyeable environment-friendly polyurethane elastomer adopts twin-screw reaction extruder continuous production one-step synthesis process, comprising the following steps:

[0032] S1. Add polyhydric alcohol, 1,3-benzenedicarboxylic acid, 5-sulfonic acid-1,3-di(2-hydroxyethyl) ester sodium salt and antioxidant into feed tank A, stir well and heat evenly, and heat to After the material temperature is 100-120°C, continue to stir at a low speed below 50rpm and nitrogen blanket for later use;

[0033] S2. Melt the diisocyanate and add it to the trough B, heat it to the required temperature of 50-60°C, then continue to stir at a low speed of 50 rpm or less, pass nitrogen and seal it for later use;

[0034] S3. The materials in trough A and trough B are metered by the metering pump and sent to the mixing head. After stirring at a high speed of 2000rpm or more for uniform mixing, the mixed material is sent to the twin-screw reaction extruder for r...

Embodiment 1

[0047] A kind of preparation method of dyeable environment-friendly polyurethane elastomer adopts twin-screw reaction extruder continuous production one-step synthesis process, comprising the following steps:

[0048] S1, based on the total weight of the polyurethane elastomer, 45.56wt% of polybutylene adipate 1000, 11.39wt% of 1,3-phthalic acid, 5-sulfonic acid-1,3-bis(2 -Hydroxyethyl) ester sodium salt and 0.3wt% antioxidant are added in feed tank A, fully stirred and evenly heated, heated to a material temperature of 100-120°C and then continuously stirred at a low speed and nitrogen sealed for later use;

[0049] S2. Based on the total weight of the polyurethane elastomer, melt 42.14wt% of diisocyanate and add it to the feed tank B, heat it to the required temperature of 50-60° C., then continue to stir at a low speed and ventilate it with nitrogen and seal it for later use;

[0050] S3. The materials in trough A and trough B are metered by the metering pump and then sent ...

Embodiment 2

[0053] A kind of preparation method of dyeable environment-friendly polyurethane elastomer adopts twin-screw reaction extruder continuous production one-step synthesis process, comprising the following steps:

[0054] S1. Based on the total weight of the polyurethane elastomer, 62.29wt% of polyethylene adipate butylene glycol ester 2000, 7.79wt% of 1,3-phthalic acid, 5-sulfonic acid-1,3- Bis(2-hydroxyethyl) ester sodium salt and 0.56wt% antioxidant are added in feed tank A, fully stirred and evenly heated, after being heated to 100-120° C. of feed temperature, continue to stir at a low speed and nitrogen seal for standby;

[0055] S2. Based on the total weight of the polyurethane elastomer, melt 28.81wt% of diisocyanate and add it to the feed tank B, heat it to the required temperature of 50-60°C, and then continue to stir at a low speed and pass nitrogen nitrogen seal before use;

[0056] S3. The materials in trough A and trough B are metered by the metering pump and then sen...

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Abstract

The invention discloses a preparation method of a dyeable environment-friendly polyurethane elastomer. Polyol, diisocyanate, 1,3-phthalic acid, 5-sulfo-1,3-bis(2-hydroxyethyl) ester sodium salt (SIPEG), a light stabilizer, an antioxidant, a catalyst and a lubricating agent are used as raw materials, a polymerization reaction is performed through a double-screw reaction extruder, and after the polymerization reaction is finished, filtration, granulation in water, dehydration and drying are performed to obtain a final product. The preparation method disclosed by the invention is simple in process, and the prepared product does not contain a solvent and is beneficial to environment-friendly and safe production. The invention also discloses the dyeable environment-friendly polyurethane elastomer which has good dyeability, solves the problem of poor color fastness of TPU, improves the dyeability of TPU, overcomes the phenomenon of uneven dyeing and has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of polyurethane materials, and in particular relates to a dyeable environment-friendly polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic Polyurethane, referred to as TPU, has excellent mechanical properties and elasticity, extremely wear-resistant and chemical-resistant properties, as well as its special properties of good compatibility with blood and cell tissues, so it is developing rapidly Become an extremely important material in daily life and medical treatment. And because TPU has the above-mentioned superior properties, its application range is quite wide, such as leather industry, adhesives, elastic fibers (elastic fiber, spandexfiber), biomedical materials, rubber industry modifiers, etc. have its products. In addition, the processing technology of TPU is also very easy, and it can be processed by using general polymer processing equipment, such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32D01F6/94D01F1/10
CPCC08G18/3855C08G18/4238C08G18/4854C08G18/6666D01F1/10D01F6/94
Inventor 林永欣许志明
Owner 高鼎精细化工(昆山)有限公司
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