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A kind of polyurethane resin and its preparation method and application

A polyurethane resin and urethane technology, applied in the field of polyurethane resin, can solve the problems of reducing the physical properties of materials, deterioration of wear and scratch resistance, poor weather resistance, etc., and achieves good weather resistance, good wear and scratch resistance, and water resistance. good solution effect

Active Publication Date: 2022-03-29
SHANGHAI HUIDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the known prior art, the water-absorbing characteristics of polyurethane are usually achieved by adding hydrophilic polyoxyethylene polyols, but there are disadvantages, such as swelling and swelling after water absorption, which reduces the physical properties of the material, making the material The wear resistance and scratch resistance of the
In addition, polyoxyethylene polyol also has the defect of poor weather resistance

Method used

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  • A kind of polyurethane resin and its preparation method and application
  • A kind of polyurethane resin and its preparation method and application
  • A kind of polyurethane resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071]

[0072] (A) The preparation method of urethane diol 1:

[0073] The polyoxyethylene ether diol that the number average molecular weight of dropping into 1mol is 250g / mol in the reactor, the number average molecular weight of 1mol is the polytetrahydrofuran diol of 250g / mol, and 187.5 grams of N,N-dimethylformamide, Start stirring, control the reaction temperature at 50°C-60°C, after 1 hour, add 1mol of diphenylmethane-4,4‵-diisocyanate, control the reaction temperature at 70°C-80°C for 2 hours to obtain urethane Diol 1 with a number average molecular weight of 750 g / mol.

[0074] (B) The preparation method of urethane diol 2:

[0075] 1 mole of polycaprolactone diol with a number average molecular weight of 1000 g / mol, 1 mole of polytetrahydrofuran diol with a number average molecular weight of 500 g / mol, and 437.5 grams of N,N-dimethylformaldehyde in the reactor Amide, start stirring, control the reaction temperature at 50°C-60°C, after 1 hour, add 1mol of diphen...

Embodiment 2

[0081]

[0082] (A) The preparation method of urethane diol 1:

[0083] The polyoxyethylene ether diol that the number average molecular weight of dropping into 1mol is 250g / mol in the reactor, the number average molecular weight of 1mol is the polytetrahydrofuran diol of 250g / mol, and 187.5 grams of N,N-dimethylformamide, Start stirring, control the reaction temperature at 50°C-60°C, after 1 hour, add 1mol of diphenylmethane-4,4‵-diisocyanate, control the reaction temperature at 70°C-80°C for 2 hours to obtain urethane Diol 1 with a number average molecular weight of 750 g / mol.

[0084] (B) The preparation method of urethane diol 2:

[0085] 1 mole of number average molecular weight is 500g / mol polycaprolactone diol, 1 mole of number average molecular weight is 250g / mol polytetrahydrofuran diol, and 250 grams of N,N-dimethylformaldehyde in the reactor Amide, start stirring, control the reaction temperature at 50°C-60°C, after 1 hour, add 1mol of diphenylmethane-4,4‵-diis...

Embodiment 3

[0091]

[0092]

[0093](A) The preparation method of urethane diol 1:

[0094] The polyoxyethylene ether diol that the number average molecular weight of dropping into 1mol is 500g / mol in the reactor, the number average molecular weight of 1mol is the polytetrahydrofuran diol of 500g / mol, and 312.5 grams of N,N-dimethylformamide, Start stirring, control the reaction temperature at 50°C-60°C, after 1 hour, add 1mol of diphenylmethane-4,4‵-diisocyanate, control the reaction temperature at 70°C-80°C for 2 hours to obtain urethane Diol 1 with a number average molecular weight of 1250 g / mol.

[0095] (B) The preparation method of urethane diol 2:

[0096] 1 mole of polycaprolactone diol with a number average molecular weight of 1000 g / mol, 1 mole of polytetrahydrofuran diol with a number average molecular weight of 500 g / mol, and 437.5 grams of N,N-dimethylformaldehyde in the reactor Amide, start stirring, control the reaction temperature at 50°C-60°C, after 1 hour, add 1m...

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PUM

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Abstract

The invention discloses a polyurethane resin, which comprises a first urethane diol, a second urethane diol, a highly branched polyester diol, diphenylmethane-4,4-diol Isocyanate, first diol chain extender, second diol chain extender, rosin ester diol, cellulose acetate butyrate, first solvent and second solvent. The invention also discloses its preparation method and application. The polyurethane resin of the invention can be applied in the fields of decorative materials, sports materials and sporting goods that require anti-skid in the synthetic leather industry. It is coated on the top layer of PU and PVC by release paper transfer, surface treatment or printing to play the role of anti-slip, and also has the characteristics of good wear resistance and scratch resistance, good weather resistance and good hydrolysis resistance.

Description

technical field [0001] The invention relates to the technical field of polyurethane resin preparation, in particular to a polyurethane resin with strong anti-slip effect before and after wet water. Background technique [0002] Polyurethane is polymerized from long chain raw materials and short chain raw materials, and is a block polymer. Generally, long-chain diols constitute the soft segment, while the hard segment is composed of polyisocyanate and chain extender. The types of soft and hard segments affect the properties of the material. Polyether, polyester and other oligomer polyols make up the soft segment. The soft segment accounts for the majority of polyurethane, and the properties of polyurethane prepared by different types of polyols and isocyanates are different. Polyurethane for synthetic leather is widely used in clothing, shoes, bags, furniture, automobiles, decorative materials, sports materials, sporting goods and other fields according to its different pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L1/14C08G18/76C08G18/66C08G18/48C08G18/42C08G18/12C08G18/64C08G18/32D06N3/14
CPCC08L75/08C08G18/7671C08G18/4833C08G18/4854C08G18/4808C08G18/4277C08G18/4018C08G18/12C08G18/4238C08G18/64C08G18/3206D06N3/142D06N3/147D06N3/146D06N2203/068D06N2203/026D06N2209/1685D06N2209/1692D06N2201/0236D06N2211/28C08L1/14
Inventor 钱建中钱洪祥郭海英杨锦朱丽佳阎成虎
Owner SHANGHAI HUIDE TECH CO LTD
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