Polyurethane resin for slow rebound sponge, preparation method and application

A technology of polyurethane resin and slow rebound sponge is applied in the fields of polyurethane resin for slow rebound sponge and its preparation and application, which can solve the problem of high production cost

Active Publication Date: 2021-06-08
ZHEJIANG HUAFON NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For polyurethane sponge production enterprises, it is necessary to be equipped with raw materials of different types and specifications to adapt to the production of sponges with different performance requirements, and each time the raw materials are replaced, the proofing machine and the material tank need to be cleaned, and the production cost is high.

Method used

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  • Polyurethane resin for slow rebound sponge, preparation method and application
  • Polyurethane resin for slow rebound sponge, preparation method and application
  • Polyurethane resin for slow rebound sponge, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The polyoxyethylene-oxypropylene trihydric alcohol (number average molecular weight is 6000) of 144.3kg, the polyoxypropylene ether trihydric alcohol (number average molecular weight 300) of 86.6kg, the styrene graft copolymerized polyoxyethylene-oxypropylene of 46.2kg Trihydric alcohol (number-average molecular weight is 6000), 1.39kg ethylene glycol, the ethylene glycol solution of the triethylenediamine of 0.22kg, the bis (dimethylaminoethyl) ether of 0.89kg 70wt% and 30wt% ash A solution made of dipropylene glycol, 2.77kg of water and 0.28kg of silicone foam stabilizer were reacted at 50°C for 2.5h, cooled to 40°C, and mixed for 1.5h to obtain polyurethane resin component A.

[0056] With 119.8kg of diphenylmethane diisocyanate, 39.8kg of carbodiimide modified diphenylmethane diisocyanate, 1.99kg of polyoxyethylene-oxypropylene trihydric alcohol (number average molecular weight is 6000) and 0.0040kg of Phosphoric acid was reacted at 65°C for 3 hours to obtain compon...

Embodiment 2

[0060]The polyoxyethylene-oxypropylene trihydric alcohol (number average molecular weight is 6000) of 144.3kg, the polyoxypropylene ether trihydric alcohol (number average molecular weight 300) of 86.6kg, the styrene graft copolymerized polyoxyethylene-oxypropylene of 46.2kg Trihydric alcohol (the number average molecular weight is 6000), 1.39kg ethylene glycol, the ethylene glycol solution of the triethylenediamine of 0.22kg, the bis(dimethylaminoethyl) ether of 0.89kg 70wt% and 30wt% ash A solution made of dipropylene glycol, 2.77kg of water and 0.28kg of silicone foam stabilizer were reacted at 50°C for 2.5h, cooled to 40°C, and mixed for 1.5h to obtain polyurethane resin component A.

[0061] With 18.7kg of diphenylmethane diisocyanate, 6.21kg of carbodiimide modified diphenylmethane diisocyanate, 0.30kg of polyoxyethylene-oxypropylene trihydric alcohol (number average molecular weight is 6000) and 0.0009kg of Phosphoric acid was reacted at 65°C for 3 hours to obtain compo...

Embodiment 3

[0065] The polyoxyethylene-oxypropylene trihydric alcohol (number average molecular weight is 10000) of 89.8kg, the polyoxypropylene ether trihydric alcohol (number average molecular weight 1000) of 11.2kg, the acrylonitrile graft copolymerized polyoxyethylene-oxypropylene of 101.0kg Trihydric alcohol (the number average molecular weight is 10000), 2.02kg ethylene glycol, the ethylene glycol solution of the triethylenediamine of 1.01kg, the bis (dimethylaminoethyl) ether of 70wt% and 30wt% ash of 1.01kg A solution made of dipropylene glycol, 3.03kg of water and 4.04kg of silicone foam stabilizer were reacted at 60°C for 1.5h, cooled to 45°C, and mixed for 1.0h to obtain the polyurethane resin component A.

[0066] With 7.99kg of diphenylmethane diisocyanate, 2.00kg of carbodiimide modified diphenylmethane diisocyanate, 2.00kg of polyoxyethylene-oxypropylene trihydric alcohol (number average molecular weight is 10000) and 0.002kg of Phosphoric acid was reacted at 75°C for 2 hou...

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PUM

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Abstract

The invention discloses a polyurethane for slow resilience sponge, its preparation method and application. The resin comprises a resin A component, a resin B1 component and a resin B2 component, and the resin A component includes polypolyol A and a crosslinking agent , catalyst, foaming agent and foam stabilizer; resin B1 includes 100 parts of isocyanate B1, 10 to 40 parts of polypolyol B1, 0.002 to 0.010 parts of side reaction inhibitor, resin B2 includes 100 parts of isocyanate B2, and 50 parts of polypolyol B2 ~100 parts, side reaction inhibitor 0.002~0.010 parts, isocyanate B1 is diphenylmethane diisocyanate, carbodiimide modified diphenylmethane diisocyanate, toluene diisocyanate or naphthalene diisocyanate, polypolyol B1 is poly Ether trihydric alcohol, isocyanate B2 is diphenylmethane diisocyanate, carbodiimide modified diphenylmethane diisocyanate, toluene diisocyanate or naphthalene diisocyanate, polypolyol B2 is polyether polyol. The invention can prepare slow-rebound polyurethane sponges with different hardness and low cost.

Description

technical field [0001] The invention relates to a polyurethane resin for sponge, its preparation method and application. Background technique [0002] The full name of polyurethane is polyurethane, which is a general term for macromolecular compounds containing repeated urethane groups on the main chain. It is a polymer compound obtained by the interaction of binary or polyvalent organic isocyanates and polyol compounds. Polyurethane sponge has the characteristics of light weight and good resilience. [0003] The resin used to produce polyurethane sponge is generally a two-component raw material - polyol mixture and prepolymer (referred to as AB material / AB component or black and white material). [0004] Polyurethane sponges with different performance requirements need to be used with different types of AB materials. For polyurethane sponge production enterprises, it is necessary to be equipped with various types of raw materials of different specifications to adapt to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/79C08G18/65C08G18/66C08G18/32C08G18/40C08G18/48C08G18/63C08J9/08C08G101/00
CPCC08G18/3206C08G18/4072C08G18/4816C08G18/4829C08G18/4837C08G18/632C08G18/6564C08G18/6674C08G18/797C08G2110/0083
Inventor 林剑赵叶宝薛晓金蔡万东章海飞林孝宾
Owner ZHEJIANG HUAFON NEW MATERIALS CO LTD
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