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A kind of polyurethane resin and its preparation method and application

A polyurethane resin and reaction technology, which is applied in the field of polyurethane resin and its preparation, can solve the problems of decreased hardness and density, increased product hardness, and poor hand feeling, and achieves small temperature gradient, good hydrolysis resistance, and easy control of reaction Effect

Active Publication Date: 2016-04-06
XUCHUAN CHEM SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to increase the deformation ability of the surface layer, the hardness and density of the surface layer must be reduced. If the hardness is reduced, a low-modulus polyurethane resin can be used, and if the density is reduced, a foamed middle or bottom layer resin can be used; If the deformation ability is reduced, the hardness, density and cell density of the bass must be increased. The increase in hardness can be achieved by using a high modulus resin, and the increase in density can be achieved by using a high solid content resin. By increasing the modulus And increasing the density to improve the supporting ability of the bass will lead to an increase in the hardness of the entire product and a worse feel

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

[0045] A polyurethane resin, the raw material for preparing the polyurethane resin is mainly composed of the following components: polyol, chain extender EG and HQEE, isocyanate MDI, antioxidant BHT, reaction terminator methanol, solvent DMF, reactivity regulator phosphoric acid; The polyol is a mixture of polytetrahydrofuran ether diol PTMG2000, polyester polyol PBA3000, and modified polydimethylsiloxane diol X-22-176F, and the polyol is by mass percentage, each of which The content of the components is: polytetrahydrofuran ether diol: 50%; polyester polyol: 43.75%; modified polydimethylsiloxane diol: 6.25%.

[0046] The consumption and the preparation method of the raw material of its each component of this polyurethane resin are specifically as follows:

[0047] Put 80gPTMG2000, 70gPBA3000, 10gX-22-176F, 0.1gBHT, appropriate amount of phosphoric acid (adjust the pH to 5.5~6.5) and 5gEG into a 1000ml reaction flask with stirring device and nitrogen protection device, and kee...

Embodiment 2

[0049] A polyurethane resin, the raw material for preparing the polyurethane resin is mainly composed of the following components: polyol, chain extender HER and HQEE, isocyanate MDI, antioxidant BHT, reaction terminator methanol, solvent DMF, reactivity regulator phosphoric acid; The polyol is a mixture of polytetrahydrofuran ether diol PTMG2000, polycarbonate diol PCD2000, polycaprolactone diol PCL2000 and modified polydimethylsiloxane diol X-22-176F, According to the mass percentage of the polyol, the content of each component is: polytetrahydrofuran ether diol: 50%; polycarbonate diol: 15%; polycaprolactone diol: 25%; modified polyol Dimethicone Diol: 10%.

[0050] The consumption and the preparation method of the raw material of its each component of this polyurethane resin are specifically as follows:

[0051] Put 90gPTMG2000, 18gX-22-176F, 27gPCD2000, 45gPCL2000, 0.1gBHT, appropriate amount of phosphoric acid (adjust the pH to 5.5~6.5) and 8.9gHQEE into a reaction flas...

Embodiment 3

[0053] A kind of polyurethane resin, the raw material that prepares this polyurethane resin mainly is made up of following components: Polyol, chain extender EG and 1,4-BG, isocyanate MDI, antioxidant BHT, reaction terminator methanol, solvent DMF, reactivity Regulator phosphoric acid; The polyol is polytetrahydrofuran ether diol PTMG2000, polyester polyol PBA2000, polycarbonate diol PCD2000, polycaprolactone diol PCL2000 and modified polydimethylsiloxane diol The mixture of polyalcohol X-22-176F, the content of each component of the polyalcohol according to mass percentage is: polytetrahydrofuran ether diol: 60%; polyester polyol: 12%; polycarbonate diol : 10%; polycaprolactone diol: 10%; modified dimethicone diol: 8%.

[0054] The consumption and the preparation method of the raw material of its each component of this polyurethane resin are specifically as follows:

[0055] Put 108gPTMG2000, 21.6gPEBA2000, 14.4gX-22-176F, 18gPCD2000, 18gPCL2000, 0.1gBHT, an appropriate amou...

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Abstract

The invention provides a polyurethane resin. The raw materials for preparing the polyurethane resin mainly consist of the following components in parts by weight: polyol: 150-200 parts; chain extender: 10-45 parts; isocyanate: 100-150 parts; Oxygen agent: 0.1-10 parts; Reaction terminator: 0.1-1 part; Solvent: 500-800 parts; Reactivity modifier; The content of each component of the polyol: polytetrahydrofuran ether glycol: 40- 70%; Polyester polyol: 0-45%; Polycarbonate diol: 0-15%; Polycaprolactone diol: 0-25%; Modified dimethicone diol : 5-10%. The invention also provides the preparation method and application of the resin. The polyurethane resin prepared by the invention can form small and uniform cells when processing the superfine fiber synthetic leather, so that the produced superfiber can have finer creases and full fleshy feeling.

Description

technical field [0001] The invention belongs to the technical field of polyurethane synthetic materials, and in particular relates to a polyurethane resin and its preparation method and application. Background technique [0002] Polyurethane synthetic leather is one of the most important varieties of artificial synthetic leather today, and polyurethane microfiber synthetic leather is a high-end product in polyurethane synthetic leather. In 2013, the annual domestic sales volume of polyurethane microfiber synthetic leather was 162 million square meters, and in recent years, it has maintained a double-digit growth rate every year. The reason why microfiber synthetic leather can develop rapidly in a relatively short period of time is not only due to the domestic emphasis on environmental protection and the lack of natural resources, but also because of its appearance that resembles natural leather and the natural leather. Physical properties (fastness, durability) are the key ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/44C08G18/61C08G18/32C08G18/12D06M15/572
CPCC08G18/12C08G18/4018C08G18/42C08G18/4277C08G18/44C08G18/4854C08G18/61C08G18/6511C08G18/6607C08G18/7671C08G2101/00D06M15/572C08G18/3206C08G18/3215
Inventor 夏佳弟吕华波江平
Owner XUCHUAN CHEM SUZHOU
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