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Solvent-free polyurethane intermediate layer resin of super-soft synthetic leather and preparation method of solvent-free polyurethane intermediate layer resin

A solvent-free polyurethane and synthetic leather technology, applied in the field of synthetic leather, to achieve the effects of good high temperature resistance, good mechanical properties, and low glass transition temperature

Active Publication Date: 2019-06-18
HEFEI ANLI POLYURETHANE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a solvent-free polyurethane intermediate layer resin for supersoft synthetic leather and its preparation method, thereby solving the problem of both environmental protection and mechanical properties of polyurethane synthetic leather materials used in soft consumer goods such as bags, clothing and shoe linings

Method used

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  • Solvent-free polyurethane intermediate layer resin of super-soft synthetic leather and preparation method of solvent-free polyurethane intermediate layer resin
  • Solvent-free polyurethane intermediate layer resin of super-soft synthetic leather and preparation method of solvent-free polyurethane intermediate layer resin
  • Solvent-free polyurethane intermediate layer resin of super-soft synthetic leather and preparation method of solvent-free polyurethane intermediate layer resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A solvent-free polyurethane intermediate layer resin for super soft synthetic leather, composed of component A and component B in a mass ratio of 100:25,

[0060] Wherein component A is composed of the following components in parts by mass:

[0061]

[0062] The B component is composed of the following components in parts by mass:

[0063] Isocyanate (4,4'-diphenylmethane diisocyanate, mixture of 4,4'-diphenylmethane diisocyanate and 2,4'-diphenylmethane diisocyanate) 180 parts

[0064] Silicone polyether diol 80 parts

[0065] Silicone diamine 20 parts

[0066] The isocyanate-modified silicone diol in the A component is composed of the following components in parts by mass:

[0067] Silicone glycol 100 parts

[0068] Isocyanate (carbodiimide-uretonimine modified MDI) 58 parts

[0069] Chain extender (1,4-butanediol) 18 parts

[0070] The organosilicon single-end difunctional dihydric alcohol selects the silicone single-end difunctional dihydric alcohol Tech-21...

Embodiment 2

[0085] A solvent-free polyurethane intermediate layer resin for super soft synthetic leather, composed of component A and component B in a mass ratio of 100:105,

[0086] Wherein component A is composed of the following components in parts by mass:

[0087]

[0088] The B component is composed of the following components in parts by mass:

[0089] Isocyanate (4,4'-diphenylmethane diisocyanate, mixture of 4,4'-diphenylmethane diisocyanate and 2,4'-diphenylmethane diisocyanate) 60 parts

[0090] Silicone polyether diol 90 parts

[0091] Silicone diamine 10 parts

[0092] The isocyanate-modified silicone diol in the A component is composed of the following components in parts by mass:

[0093] Silicone dihydric alcohol (molecular weight 1000) 100 parts

[0094] Isocyanate (toluene diisocyanate) 35 parts

[0095] Chain extender (ethylene glycol) 12.5 parts

[0096] Its preparation method comprises the following steps:

[0097] (1) Preparation of isocyanate-modified silic...

Embodiment 3

[0106]A solvent-free polyurethane intermediate layer resin for super soft synthetic leather, composed of component A and component B in a mass ratio of 100:48,

[0107] Wherein component A is composed of the following components in parts by mass:

[0108]

[0109] The B component is composed of the following components in parts by mass:

[0110] Isocyanate (4,4'-diphenylmethane diisocyanate, mixture of 4,4'-diphenylmethane diisocyanate and 2,4'-diphenylmethane diisocyanate) 120 parts

[0111] Silicone polyether diol 85 parts

[0112] Silicone diamine 15 parts

[0113] The isocyanate-modified silicone diol in the A component is composed of the following components in parts by mass:

[0114] Silicone glycol 100 parts

[0115] 52.5 parts of isocyanate (hydrogenated MDI)

[0116] Chain extender (1,3-propanediol) 15.2 parts

[0117] Products, Tech-2127 is a silicone polyether diol product with a molecular weight of 2000 produced by Shanghai Tiger Polymer Technology Co., Lt...

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Abstract

The invention provides solvent-free polyurethane intermediate layer resin of super-soft synthetic leather and a preparation method of the solvent-free polyurethane intermediate layer resin. The solvent-free polyurethane intermediate layer resin is prepared from a component A and a component B which are in the proportion of 100:25-100:105, wherein the component A is prepared from cyanate modified organosilicone diol, organosilicon single-end double-function diol, a foaming agent, a foaming catalyst and a gel catalyst, and the component B is prepared from isocyanate, organosilicon polyether dioland organosilicon diamine. The balance design of super softness and good mechanical properties of the resin is achieved by reducing the degree of phase separation between the soft segment and the hard segment in the molecular structure and combining with the excellent mechanical properties of organic silicon, and the softness of the material is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather, and in particular relates to a solvent-free polyurethane interlayer resin for supersoft synthetic leather and a preparation method thereof. Background technique [0002] Luggage, clothing, shoes and other consumer products that may be in full contact with human skin have higher requirements for the environmental performance of the genuine leather or polyurethane synthetic leather materials used for health reasons; Another important indicator of the material is that it feels soft and has good strength. Therefore, although the physical properties of traditional solvent-based polyurethane synthetic leather can meet the requirements, in terms of environmental performance, the residual amount of organic solvent DMF (generally less than 1000ppm) in solvent-based polyurethane synthetic leather is far greater than that of some brand customers, such as ZARA , COACH, ELLE and other brands requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00C08G18/65C08G18/61C08G18/32C08J9/14C08G101/00
Inventor 孔为青王海峰李李李晓飞范仁祥姚克俭
Owner HEFEI ANLI POLYURETHANE NEW MATERIAL
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