Aqueous softening aid for synthetic leather

A synthetic leather, water-based technology, applied in coatings, textiles and papermaking, polyurea/polyurethane coatings, etc., can solve problems such as air bubbles and pinholes in synthetic leather, achieve soft and smooth feel, improve environmental protection, and improve softness Effect

Inactive Publication Date: 2017-07-11
江西展邦科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used softeners for synthetic leather are mainly surfactants, which are prone to air bubbles when added to water-based polyurethane slurry, resulting in pinhole problems in synthetic leather

Method used

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  • Aqueous softening aid for synthetic leather
  • Aqueous softening aid for synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 2g of polyvinylpyrrolidone and 1g of methylene bisacrylamide to 100g of water, heat up to reflux state and keep stirring for 10min, then add 20g of polyvinyl butyral and 0.3g of polylysine, continue to reflux and keep stirring 30min to obtain water-based polyvinyl butyral emulsion;

[0024] (2) Add 2g of oligosaccharides and 1g of pregelatinized potato starch to 5g of microcrystalline cellulose, heat up to 85-90°C and grind for 15min, then transfer to -5-0°C and let stand for 30min, then heat up to Grinding at 85-90°C for 15 minutes to obtain swellable modified microcrystalline cellulose;

[0025] (3) Add 3g of water-based α-pinene / diacetone acrylamide copolymer, swelling type modified microcrystalline cellulose and 1g of calcium stearoyl lactylate to 50g of water, heat up to reflux state and keep stirring for 15min, then add water-based polymer Vinyl butyral emulsion, 1g of nano-titanium dioxide-loaded rosin glyceride and 0.5g of hexamethylolmelamine hexamethy...

Embodiment 2

[0029] (1) Add 3g of polyvinylpyrrolidone and 0.5g of methylene bisacrylamide to 100g of water, heat up to reflux state and keep stirring for 10min, then add 25g of polyvinyl butyral and 0.3g of polylysine, and continue to reflux and keep warm Stir for 30 minutes to obtain water-based polyvinyl butyral emulsion;

[0030] (2) Add 2g of oligosaccharides and 1g of pregelatinized potato starch to 5g of microcrystalline cellulose, heat up to 85-90°C and grind for 15min, then transfer to -5-0°C and let stand for 30min, then heat up to Grinding at 85-90°C for 15 minutes to obtain swellable modified microcrystalline cellulose;

[0031] (3) Add 5g of water-based α-pinene / diacetone acrylamide copolymer, swelling type modified microcrystalline cellulose and 1g of calcium stearoyl lactylate to 50g of water, and heat up to reflux state and keep stirring for 15min, then add water-based polymer Vinyl butyral emulsion, 1g of nano-titanium dioxide-loaded rosin glyceride and 0.5g of hexamethyl...

Embodiment 3

[0047] The water-based softening auxiliary agent made by equal amount of embodiment 1, embodiment 2, comparative example 1, comparative example 2 and comparative example 3 is added in the water-based polyurethane slurry (each raw material ratio is as shown in Table 1, wherein water-based softening auxiliary agent Addition amount of additive is 1.5wt%, in solid content), and the comparative example 4 that does not add water-based softening auxiliary agent is set at the same time, and the synthetic leather is made by the same processing technology, the softness of the synthetic leather made is tested, the test result As shown in table 2.

[0048] Table 1 Synthetic leather preparation slurry ratio table

[0049]

[0050] The softness test result of the made synthetic leather of table 2

[0051]

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PUM

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Abstract

The invention discloses an aqueous softening aid for synthetic leather and relates to the technical field of synthetic leather functional aids. The aqueous softening aid is prepared from 20 to 25 parts by weight of polyvinyl butyral, 3 to 5 parts by weight of aqueous alpha-pinene / diacetone acrylamide copolymer, 3 to 5 parts by weight of microcrystalline cellulose, 2 to 3 parts by weight of polyvinylpyrrolidone, 2 to 3 parts by weight of oligosaccharide, 1 to 2 parts by weight of pregelatinized potato starch, 1 to 2 parts by weight of nanometer titanium dioxide-loaded rosin glyceride, 1 to 2 parts by weight of calcium stearyl lactylate, 0.5 to 1 part by weight of hexakis(methoxymethyl)melamine, 0.5 to 1 part by weight of methylene diacrylamide, 0.1 to 0.3 parts by weight of polylysine and 100 to 150 parts by weight of water. The aqueous softening aid in the aqueous polyurethane slurry can effectively improve the softness of the synthetic leather product and make the synthetic leather product soft and smooth.

Description

[0001] Technical field: [0002] The invention relates to the technical field of functional auxiliary agents for synthetic leather, in particular to a water-based softening auxiliary agent suitable for synthetic leather. [0003] Background technique: [0004] Synthetic leather is made of impregnated non-woven fabric as a mesh layer and a microporous polyurethane layer as a grain layer. Its front and back are very similar to leather, and has a certain degree of air permeability, which is closer to natural leather than ordinary artificial leather. It is widely used in making shoes, boots, bags and ball games. [0005] During the processing of synthetic leather, functional additives need to be added to enhance the feel, appearance quality and use quality of synthetic leather products. Softener is a special functional additive for synthetic leather, which is used to give synthetic leather a soft and smooth feel, making it feel as close to real leather as possible. At present, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/14C08L1/04C08L39/06C08L3/02C08K13/06C08K9/12C08K5/098C09D175/04C09D7/12D06N3/00D06N3/14
CPCC08L29/14C08L2205/035C09D7/61C09D7/62C09D7/63C09D7/65C09D175/04D06N3/0059D06N3/14D06N2203/045D06N2211/28C08L1/04C08L39/06C08L3/02C08K13/06C08K9/12C08K5/098
Inventor 曾丽建郑建荣张维贤李海
Owner 江西展邦科技有限公司
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