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A kind of non-yellowing polyurethane resin for mirror surface synthetic leather and preparation method thereof

A polyurethane resin and non-yellowing technology, which is applied in the field of non-yellowing polyurethane resin for mirror synthetic leather and its preparation, can solve the problem of reducing product production stability and quality, weak intermolecular force of non-yellowing polyurethane resin, and low temperature resistance. Reduce the risk of insoluble particles and local gel

Active Publication Date: 2017-04-05
SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When preparing non-yellowing polyurethane resin for mirror surface synthetic leather, a small amount of insoluble particles or partial gel will be produced, which reduces the production stability and quality of the product
[0004] In addition, the intermolecular force of non-yellowing polyurethane resin is relatively weak, and the anti-adhesive property of the mirror synthetic leather prepared by it is relatively poor, and the polyurethane resin for mirror synthetic leather has poor low-temperature folding resistance due to its relatively high 100% modulus. , these problems have limited the development of polyurethane resin for mirror synthetic leather

Method used

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  • A kind of non-yellowing polyurethane resin for mirror surface synthetic leather and preparation method thereof
  • A kind of non-yellowing polyurethane resin for mirror surface synthetic leather and preparation method thereof
  • A kind of non-yellowing polyurethane resin for mirror surface synthetic leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The raw materials used in this embodiment and their weight are shown in Table 1 below.

[0040] Table 1

[0041] raw material name weight / gram) percentage(%) Antioxidant BHT 0.51 0.02 Polytetrahydrofuran ether glycol (number average molecular weight 2000) 144 5.65 Polytetrahydrofuran ether glycol (number average molecular weight 3000) 216 8.47 Polyneopentyl glycol adipate diol (number average molecular weight 2000) 48 1.88 Ethylene glycol 6.4 0.25 Piperazine 5.31 0.21 4,4'-Diaminodicyclohexylmethane 52 2.04 Isophorone diisocyanate 129 5.06

[0042] dimethylformamide 1109.25 43.50 toluene 369.75 14.50 Isopropanol 469.8 18.42 total weight 2550.02 100％

[0043] The preparation steps of non-yellowing polyurethane resin for the mirror surface synthetic leather of the present embodiment are as follows:

[0044] 1), the polytetrahydrofuran ether glycol of 221.85g di...

Embodiment 2

[0049] The raw materials used in this embodiment and their weight are shown in Table 2 below.

[0050] Table 2

[0051] raw material name weight / gram) percentage(%) Antioxidant BHT 2.4 0.10 Polytetrahydrofuran ether glycol (number average molecular weight 2000) 192 8.00 Polytetrahydrofuran ether glycol (number average molecular weight 3000) 288 12.00 Polybutylene adipate diol (number average molecular weight 2000) 48 2.00 Ethylene glycol 11.23 0.47

[0052] Piperazine 46.73 1.95 4,4'-Diaminodicyclohexylmethane 38.04 1.58 Isophorone diisocyanate 248.75 10.36 dimethylformamide 1240 51.67 toluene 175.4 7.30 Isopropanol 100 4.17 leveling agent 9.6 0.40 total weight 2400.15 100

[0053] Wherein, the chemical name of the leveling agent is polyether-modified dimethyl polysiloxane, and BYK-L9565 of BYK Company is used.

[0054] The preparation steps of non-yellowing ...

Embodiment 3

[0060]The raw materials used in this embodiment and their weight are shown in Table 3 below.

[0061] table 3

[0062] raw material name weight / gram) percentage(%) Antioxidant BHT 0.41 0.02 Polytetrahydrofuran ether glycol (number average molecular weight 2000) 144 7.06 Polytetrahydrofuran ether glycol (number average molecular weight 3000) 216 10.59 Polyneopentyl glycol adipate diol (number average molecular weight 2000) 48 2.35 Ethylene glycol 7.82 0.38 Piperazine 6.51 0.32 4,4'-Diaminodicyclohexylmethane 63.62 3.12 Isophorone diisocyanate 146.39 7.18 dimethylformamide 914.85 44.84 toluene 281.49 13.80 Isopropanol 211.12 10.34 total weight 2040.21 100

[0063] The preparation steps of non-yellowing polyurethane resin for the mirror surface synthetic leather of the present embodiment are as follows:

[0064] 1), the polytetrahydrofuran ether glycol of 182.97g dimethylformami...

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Abstract

The invention discloses non-yellowing polyurethane resin for mirror synthetic leather and a preparation method of polyurethane resin. The non-yellowing polyurethane resin is prepared from following raw materials: polyol, a chain extender, diisocyanate, a solvent and an antioxidant, wherein polyol is a mixture of polytetramethylene ether glycol having a number average molecular weight of 2000, polytetramethylene ether glycol having a number average molecular weight of 3000, polydiol adipate having a number average molecular weight of 1000-3000; the chain extender is a mixture of C2-C6 aliphatic diol, piperazine and alicyclic diprimary amine; diisocyanate is aliphatic diisocyanate; the solvent comprises a solvent A, a solvent B and a solvent C, the solvent A is at least one selected from dimethylformamide and dimethylacetamide, the solvent B is at least one selected from toluene, butanone and ethyl acetate and the solvent C is at least one selected from isopropanol or isobutanol. By virtue of the non-yellowing polyurethane resin, the risk of generation of insoluble particulates and topical gel in the system is reduced and meanwhile, the non-yellowing polyurethane resin for synthetic leather has the characteristics of excellent low-temperature folding resistance and good anti-sticking performance.

Description

technical field [0001] The invention relates to a polyurethane resin and a preparation method thereof, in particular to a non-yellowing polyurethane resin for mirror surface synthetic leather and a preparation method thereof. Background technique [0002] With the deepening market competition of polyurethane resins for synthetic leather, differentiated, new and stable polyurethane resins have gradually become the object of development. This is especially true for non-yellowing polyurethane resins for mirror synthetic leather with high added value. [0003] Chinese patents CN101381447B, CN102276783B, CN101857721A, and CN102718942A respectively disclose methods for preparing non-yellowing polyurethane resins, all of which adopt the method of prepolymerization and chain extension with aliphatic or cycloaliphatic diamines, but the diamines used are all For dibasic primary amines. When preparing the non-yellowing polyurethane resin for mirror surface synthetic leather, a small ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08G18/12D06N3/14
CPCC08G18/12C08G18/4018C08G18/4238C08G18/4808C08G18/4854C08G18/6607C08G18/755C08G18/758D06N3/146D06N2203/068C08G18/325C08G18/3234
Inventor 杨银龙蒋红梅解品成唐劲松
Owner SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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