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Cold-resistant high-wear-resistant polyurethane resin for synthetic leather

A polyurethane resin, high wear-resistant technology, applied in textiles, papermaking, fiber treatment, etc., can solve the problems that it is difficult to make greater progress, there is no satisfactory high wear-resistant product, and the comprehensive performance requirements are high.

Active Publication Date: 2011-05-18
ZHEJIANG HUAFON SYNTHETIC RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the wear resistance of polyurethane resins for synthetic leather on the market can only be satisfied with ordinary synthetic leather products, and there is no polyurethane synthetic leather for high wear-resistant products. The main reason is the improvement of the wear resistance of synthetic leather. It will affect other properties of leather, such as folding resistance, and it is necessary to ensure the softness and genuine leather feeling of artificial leather and synthetic leather. This requires very high performance of polyurethane resin, and the performance is improved by preparing conventional raw materials for polyurethane resin. It has been difficult to make further progress
Due to its high comprehensive performance requirements, many performances are contradictory and restrictive, and there is no satisfactory high wear-resistant product on the market.

Method used

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  • Cold-resistant high-wear-resistant polyurethane resin for synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Raw material name Weight (unit: kg)

[0011] Polytetramethylene ether glycol (molecular weight 2000) 80

[0012] Polycarbonate diol (molecular weight 2000) 120

[0013] Ethylene glycol 15.5

[0014] 4,4′-Diphenylmethane diisocyanate (MDI) 87

[0015] Antioxidant 245 0.5

[0016] UV absorber Tinuvin101 4

[0017] Anti-sticking agent 0.5

[0018] Light stabilizer 765 4

[0019] Abrasion Agent 10

[0020] Butanone (MEK) 212

[0021] N,N-Dimethylformamide (DMF) 494

[0022] The preparation steps are as follows: put 80 kg of polytetramethylene ether glycol, 120 kg of polycarbonate diol, 15.5 kg of ethylene glycol, 0.5 kg of antioxidant and 353 kg of DMF into the reaction kettle together, and stir evenly , then add MDI in batches, react at 70-80°C, continuously add DMF and MEK to control the viscosity, until the viscosity rises to 80-120MPa·S, add an appropriate amount of methanol to block, and finally add ultraviolet absorbers, anti-sticking agents, light Stabilize...

Embodiment 2

[0024] Raw material name Weight (unit: kg)

[0025] Polytetramethylene ether glycol (molecular weight 2000) 100

[0026] Polycarbonate diol (molecular weight 2000) 80

[0027] Hydroxy silicone oil (molecular weight 2000) 20

[0028] 1,4-Butanediol 22.5

[0029] MDI 87

[0030] Antioxidant 245 0.5

[0031] UV absorber Tinuvin101 4

[0032] Anti-sticking agent 0.5

[0033] Light stabilizer 765 4

[0034] Abrasion Agent 8

[0035] MEK 217

[0036] DMF 505

[0037] The preparation steps are as follows: 100 kg of the above-mentioned polytetramethylene ether glycol, 60 kg of polycarbonate diol, 20 kg of hydroxyl silicone oil, 22.5 kg of 1,4-butanediol, 0.5 kg of antioxidant and 361 kg of DMF Put them into the reaction kettle together, stir evenly, then add MDI in batches, react at 70-80°C, continuously add DMF and MEK to control the viscosity, until the viscosity rises to 80-120MPa·S, add an appropriate amount of methanol to block, and finally add Ultraviolet absorber, an...

Embodiment 3

[0039] Raw material name Weight (unit: kg)

[0040] Polytetramethylene ether glycol (molecular weight 3000) 90

[0041] Polycaprolactone diol (molecular weight 2000) 100

[0042] Hydroxy silicone oil (molecular weight 2000) 40

[0043] 1,4-Butanediol 24.8

[0044] MDI 93

[0045] Antioxidant 245 0.6

[0046] UV absorber Tinuvin101 3.6

[0047] Anti-sticking agent 0.6

[0048] Light stabilizer 765 4.8

[0049] Wear agent 9.6

[0050] MEK 255

[0051] DMF 596

[0052] The preparation steps are as follows: 90 kg of the above-mentioned polytetramethylene ether diol, 100 kg of polycaprolactone diol, 40 kg of hydroxyl silicone oil, 24.8 kg of 1,4-butanediol, 0.6 kg of antioxidant and DMF426 Put the kilograms into the reaction kettle together, stir evenly, then add MDI in batches, react at 70-80°C, continuously add DMF and MEK to control the viscosity, until the viscosity rises to 80-120MPa·S, add an appropriate amount of methanol to block, and finally Add ultraviolet abso...

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Abstract

The invention belongs to polyurethane elastomeric materials, and particularly relates to a cold-resistant high-wear-resistant polyurethane resin for synthetic leather. The technical scheme is as follows: the cold-resistant high-wear-resistant polyurethane resin for synthetic leather is characterized by mainly comprising isocyanate, polyalcohol compound, reactive silicone oil, alcohol chain extender of which the molecular weight is lower than 150, and solvent. By using the scheme, the invention overcomes the defects in the prior art, and provides a novel cold-resistant high-wear-resistant polyurethane resin for synthetic leather.

Description

technical field [0001] The invention belongs to polyurethane elastomer materials, in particular to a cold-resistant high-abrasion-resistant polyurethane resin for synthetic leather. Background technique [0002] With the rapid development of the synthetic leather industry, the quality requirements of polyurethane resin for synthetic leather are getting higher and higher, and properties such as wear resistance, cold resistance (low temperature folding resistance), and yellowing resistance have also become important inspection standards. At present, the wear resistance of polyurethane resins for synthetic leather on the market can only be satisfied with ordinary synthetic leather products, and there is no polyurethane synthetic leather for high wear-resistant products. The main reason is the improvement of the wear resistance of synthetic leather. It will affect other properties of leather, such as folding resistance, and it is necessary to ensure the softness and genuine leat...

Claims

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Application Information

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IPC IPC(8): C08G18/65C08G18/61C08G18/66D06M15/564D06M15/572D06M15/568D06N3/14
Inventor 郑绍军袁水华薛敬钦陈翰林尹泰钟
Owner ZHEJIANG HUAFON SYNTHETIC RESIN
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