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Polyurethane resin

A polyurethane resin and polyester polyol technology, applied in the field of polyurethane resin, can solve the problems of poor cold resistance, affecting the appearance of the product, and cannot meet the long-term use at low temperature, etc., achieve excellent cold resistance, good bending resistance, and reduce vitrification The effect of temperature

Inactive Publication Date: 2011-05-18
XUCHUAN CHEM KUNSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many polyurethane resins on the market have poor cold resistance and cannot meet the needs of long-term use at low temperatures; in addition, the leather surface of the resin is prone to yellowing under sunlight, which affects the appearance of the product

Method used

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Examples

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Effect test

Embodiment Construction

[0020] The following are specific examples of the present invention to further describe the technical solutions of the present invention, but the present invention is not limited to these examples.

[0021] The raw material formula of the polyurethane resin according to the present embodiment is made up of following components: dimethylformamide 482.64g, toluene 266.87g, polyethylene glycol adipate diol 40.33g of molecular weight 2000, polytetrahydrofuran ether of molecular weight 2000 121 g of diol, 0.88 g of antioxidant BHT, 5.18 g of ethylene glycol, 18.66 g of isophorone diamine, and 64.53 g of isophorone diisocyanate.

[0022] Polyurethane resins are prepared through the following steps:

[0023] (1) Prepolymerization reaction: drop into the reactor 97.74g of toluene, 40.33g of polyethylene glycol adipate diol, 121g of polytetrahydrofuran ether diol, 5.18g of ethylene glycol, and 0.88g of antioxidant BHT, stir After 20-30 minutes, add 64.53 g of isophorone diisocyanate. ...

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PUM

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Abstract

The invention relates to polyurethane resin, which consists of the following components in weight percentage: 4 to 5 percent of polyethylene glycol adipate, 11 to 13 percent of polytetrahydrofuran glycol, 0.4 to 0.6 percent of ethylene glycol, 1.8 to 1.9 percent of isophorone diamine, 6 to 8 percent of isophorone diisocyanate, 0.08 to 0.1 percent of antioxidant and 73 to 80 percent of organic solvent. The polyurethane resin is applied to produce instep leather of top-grade travel shoes and has good ultraviolet ray yellow stain resistant performance; and under the sunlight, the leather color can be kept unchanged for a long time, and no yellow stain occurs; meanwhile, the polyurethane resin also has good anti freezing property, and no crack generates when the polyurethane resin is used at low temperature for a long time.

Description

technical field [0001] The invention relates to a polyurethane resin, which is especially used in the production of cold-resistant and cold-resistant fabrics. Background technique [0002] The application of polyurethane resin in synthetic leather is mainly reflected in many fields such as clothing, luggage, shoes, furniture, automobiles, etc. Although the development of polyurethane resin for leather has a history of several decades, facing the continuous improvement of market demand, for Polyurethane resin technology has raised new and higher requirements, such as high-grade travel shoe upper leather must have excellent cold resistance. At present, many polyurethane resins on the market are poor in cold resistance and cannot meet the needs of long-term use at low temperatures; in addition, the leather surface of the resin is prone to yellowing under sunlight, which affects the appearance of the product. Contents of the invention [0003] The technical problem to be solv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/12D06M15/564D06N3/14
Inventor 江平吕华波周源
Owner XUCHUAN CHEM KUNSHAN
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