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A finishing method for improving the washing resistance and cold resistance of leather coating

A technology of washing resistance and finishing, applied in textiles and paper making, etc., can solve the problems of poor washing resistance and cold tortuosity of leather coating, and achieve the effect of improving dispersion uniformity, washing resistance and adhesion fastness.

Active Publication Date: 2022-02-22
宏兴汽车皮革(福建)发展有限公司
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AI Technical Summary

Problems solved by technology

[0004] Therefore, for above-mentioned problem, the present invention proposes a kind of finishing method that improves leather coating water-resistance, cold-resistant tortuosity, the present invention selects finishing material according to the specific requirement of leather coating water-resistant, cold-resistant tortuosity, rational collocation design finishing process, Effectively solve the disadvantages of poor washing resistance and poor cold resistance of leather coating

Method used

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Examples

Experimental program
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Embodiment 1

[0025] A preparation method for improving the water-washing and cold-resistant tortuousness of a leather coating, comprising the following steps:

[0026] Step 1. Preparation of pretreatment coating agent

[0027] 150 parts of water, 100 parts of aromatic polyurethane copolymer Melio PromulAP-39.A (Starr Fine Coatings Co., Ltd.).

[0028] Step 2. Preparation of base coat and intermediate coat finish

[0029] 450 parts of water, 100 parts of polyurethane copolymer RU-3901 (Staler Fine Coatings Co., Ltd.), 150 parts of polyurethane copolymer RU-3904 (Staler Fine Coatings Co., Ltd.), polyacrylate copolymer RA-2 (Stahl Fine Coatings Co., Ltd.) Tal Fine Coatings Co., Ltd.) 100 parts, polyacrylate copolymer CA-70 (Hongrun Trading Co., Ltd.) 100 parts, polyacrylate copolymer PRIMAIL SB-300 (Lanxess Chemical Co., Ltd.) 100 parts, softener Euderm 100 parts of Nappa Soft S-C (Langxess Chemical Co., Ltd.), 30 parts of plasticizer SFT HG (Apa Chemical Industry Co., Ltd.), 120 parts of p...

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Abstract

The invention relates to the technical field of leather finishing, and provides a finishing method for improving the washing resistance and cold resistance of the leather coating. Softening→stretching→middle coating→ironing→top coating→ironing→standing→softening→oscillating and softening→ironing; the main material of the finishing agent in the pretreatment and finishing process of the raw leather is aromatic polyurethane copolymer The main material of the finishing agent of the primer is polyurethane copolymer and polyacrylate copolymer containing active groups, and the main material of the finishing agent of the middle coating is the same as the main material of the finishing agent of the primer; the The main material of the finishing agent for the top coating is a polyurethane copolymer; the present invention selects the finishing materials according to the specific requirements of the leather coating's resistance to water washing and cold tortuousness, and rationally matches the design of the finishing process, so as to effectively solve the problems of poor water-washing resistance and poor cold and tortuous resistance of the leather coating. disadvantages.

Description

technical field [0001] The invention relates to the technical field of leather finishing, in particular to a finishing method for improving the washing resistance, cold resistance and bending resistance of a leather coating. Background technique [0002] The leather finishing process system includes the coating components of primer, middle coat and top coat and their finishing operation methods, such as spraying, brushing, etc., by forming a protective film on the surface of the crust leather, improving the appearance and expanding the scope of use. Improve use value. With the improvement of consumption level and the change of consumption concept, consumers' requirements for leather and its products (leather shoes, leather bags, etc.) are not limited to wearing comfort and beauty, but high physical properties and functional leather and its products are increasingly popular in consumers. Among them, the coating is washable, cold-resistant and twist-resistant, which is one of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/145D06N3/142D06N3/0077D06N2211/28D06N2209/103D06N2209/1692D06N2209/142
Inventor 孙辉永王小卓温会涛梁永贤柯俊雄但卫华
Owner 宏兴汽车皮革(福建)发展有限公司
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