Solvent-free polyurethane interlayer resin for supersoft synthetic leather and preparation method thereof

A technology of solvent-free polyurethane and synthetic leather, applied in the field of synthetic leather

Active Publication Date: 2021-09-10
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 interlayer resin for supersoft synthetic leather and preparation method thereof
  • Solvent-free polyurethane interlayer resin for supersoft synthetic leather and preparation method thereof
  • Solvent-free polyurethane interlayer resin for supersoft synthetic leather and preparation method thereof

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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PUM

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Abstract

The invention provides a solvent-free polyurethane intermediate layer resin for supersoft synthetic leather and a preparation method thereof, which is prepared from component A and component B according to the mass ratio of 100:25-100:105, wherein component A is It is prepared from cyanate-modified silicone diol, silicone single-ended difunctional diol, foaming agent, foaming catalyst, and gel catalyst; the B component is composed of isocyanate, silicone polyol It is prepared from ether diol and silicone diamine. The present invention reduces the phase separation degree of the soft segment and the hard segment in the molecular structure, and combines the excellent mechanical properties of organic silicon, thereby realizing the balanced design of super softness and good mechanical properties of the resin of the present invention, and significantly improving the softness of the material.

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 Patents(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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