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A kind of organosilicon modified polyurethane urea resin and its preparation method and application

A polyurethane urea and organosilicon technology, which is applied to organosilicon-modified polyurethane urea resin and its preparation and application fields, can solve problems such as difficulty in meeting application requirements, poor screen printing adhesion, and easy blocking of screen meshes, and achieve adhesion Strong, excellent boiling resistance, good hydrophobicity

Active Publication Date: 2022-01-18
广州致辉精化股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional mirror inks generally use cellulose-modified acrylic resin as the film-forming resin, which has poor flexibility after film formation, and the silk screen has poor adhesion on soft transparent plastic substrates such as BOPP, PC, PVC, and PET. Screen printing is fast drying and easy to block the screen, stamping and bending are prone to creases or edge bursts, and the mirror surface is white when boiled, which is difficult to meet the actual application requirements

Method used

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  • A kind of organosilicon modified polyurethane urea resin and its preparation method and application
  • A kind of organosilicon modified polyurethane urea resin and its preparation method and application
  • A kind of organosilicon modified polyurethane urea resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of organosilicon modified polyurethane urea resin, its preparation method comprises the following steps:

[0036] 1) Add 85g (42.5mmol) of polyester polyol (butanediol-neopentyl glycol-adipic acid copolymer) with a number average molecular weight of 2000g / mol into the reactor, vacuumize at 110°C for 1h, and then cool down to At 75°C, add 30g (135.0mmol) of isophorone diisocyanate, 0.13g of dibutyltin dilaurate and 4.49g (49.8mmol) of 1,4-butanediol, fill with nitrogen, and heat up to 80°C Reaction 2h;

[0037] 2) Add 240g of diacetone alcohol, stir for 1h, cool down to 40°C, slowly add dropwise a mixture consisting of 5.17g (30.36mmol) of isophoronediamine and 40g of diacetone alcohol, and continue at 40°C after the addition is complete Reaction 1h, obtains polyurethane urea resin;

[0038] 3) Add 12.6g of organosilicon alcohol EDL-60006, and react at 40°C for 1 hour to obtain a silicone-modified polyurethane urea resin (abbreviated as PUU-1, solid content: 30....

Embodiment 2

[0040] A kind of organosilicon modified polyurethane urea resin, its preparation method comprises the following steps:

[0041] 1) Add 85g (42.5mmol) of polyester polyol (butanediol-neopentyl glycol-adipic acid copolymer) with a number average molecular weight of 2000g / mol into the reactor, vacuumize at 110°C for 1h, and then cool down to At 75°C, add 30g (135.0mmol) of isophorone diisocyanate, 0.13g of dibutyltin dilaurate and 4.49g (49.8mmol) of 1,4-butanediol, fill with nitrogen, and heat up to 80°C Reaction 2h;

[0042] 2) Add 240g of diacetone alcohol, stir for 1h, cool down to 40°C, slowly add dropwise a mixture consisting of 5.17g (30.36mmol) of isophoronediamine and 40g of diacetone alcohol, and continue at 40°C after the addition is complete Reaction 1h, obtains polyurethane urea resin;

[0043] 3) Add 21 g of organosilicon alcohol EDL-60006 and react at 40°C for 1 hour to obtain a silicone-modified polyurethane urea resin (abbreviated as PUU-2, solid content: 31.8%...

Embodiment 3

[0045] A kind of organosilicon modified polyurethane urea resin, its preparation method comprises the following steps:

[0046] 1) Add 85g (42.5mmol) of polyester polyol (butanediol-adipic acid copolymer) with a number average molecular weight of 2000g / mol into the reactor, vacuumize at 110°C for 1 hour, then cool down to 75°C, and add 30g (135.0 mmol) of isophorone diisocyanate, 0.13 g of dibutyltin dilaurate and 4.49 g (49.8 mmol) of 1,4-butanediol, filled with nitrogen, heated to 80 ° C for 2 h;

[0047] 2) Add 240g of diacetone alcohol, stir for 1h, cool down to 40°C, slowly add dropwise a mixture consisting of 5.17g (30.36mmol) of isophoronediamine and 40g of diacetone alcohol, and continue at 40°C after the addition is complete Reaction 1h, obtains polyurethane urea resin;

[0048] 3) Add 12.6g of organosilicon alcohol EDL-60006 and react at 40°C for 1 hour to obtain a silicone-modified polyurethane urea resin (PUU-3 for short, solid content: 30.4%, viscosity / 25°C: 3000...

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Abstract

The invention discloses a silicone-modified polyurethane urea resin, a preparation method and application thereof. The preparation method of the organosilicon-modified polyurethane urea resin of the present invention comprises the following steps: 1) adding the dehydrated and dried polyol into the reaction kettle, then adding isocyanate, catalyst and solvent, filling with protective gas, and carrying out the polymerization reaction; 2) ) adding diamine to carry out chain extension reaction to obtain polyurethane urea resin; 3) adding organosilane to carry out end-capping reaction. The silicone-modified polyurethane urea resin of the present invention has good flexibility of the paint film after film formation, strong adhesion to plastic substrates, good hydrophobicity, excellent water boiling resistance, and good silver row effect without damaging the mirror surface , has a good application prospect in mirror ink.

Description

technical field [0001] The invention relates to a silicone-modified polyurethane urea resin, a preparation method and application thereof. Background technique [0002] Mirror ink is a kind of ink with special decorative effect. It is printed on the reverse side of transparent materials (such as: glass, PMMA, PET, PC, PVC, BOPP, etc.) by screen printing to obtain a mirror effect on the front side. Mirror ink can replace the highly polluting traditional electroplating process, the expensive vacuum plating process and the bronzing process of wasting materials in some complex patterns, backgrounds or text printing. It has many successful application cases, such as: air conditioner backplane, electrical appliances Membrane switch, mobile phone back cover, etc. [0003] At present, smart phones have been popularized in a large area, and the materials and decorative effects of the back cover of the mobile phone are changing with each passing day. The back cover of the mobile pho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/48C08G18/42C08G18/32C08G18/12C08G18/38C09D11/102
CPCC08G18/755C08G18/664C08G18/4825C08G18/4238C08G18/3206C08G18/12C08G18/38C09D11/102C08G18/3893C08G18/3228C08G18/3234
Inventor 段泽智梁国栋段瑞阳
Owner 广州致辉精化股份有限公司
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