CN104480738A - Aging-resistant polyurethane synthetic leather and production method thereof - Google Patents

Aging-resistant polyurethane synthetic leather and production method thereof Download PDF

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Publication number
CN104480738A
CN104480738A CN201410572270.XA CN201410572270A CN104480738A CN 104480738 A CN104480738 A CN 104480738A CN 201410572270 A CN201410572270 A CN 201410572270A CN 104480738 A CN104480738 A CN 104480738A
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parts
synthetic leather
add
ground
surface layer
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Chinese (zh)
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金佐跃
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HEFEI JINLINGLI CLOTHING Co Ltd
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HEFEI JINLINGLI CLOTHING Co Ltd
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Priority to CN201410572270.XA priority Critical patent/CN104480738A/en
Publication of CN104480738A publication Critical patent/CN104480738A/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
    • D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/121—Permeability to gases, adsorption
    • D06N2209/123—Breathable
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/126—Permeability to liquids, absorption
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/14—Properties of the materials having chemical properties
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/14—Properties of the materials having chemical properties
    • D06N2209/142—Hydrophobic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/1671—Resistance to bacteria, mildew, mould, fungi
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/28—Artificial leather

Abstract

The invention discloses aging-resistant polyurethane synthetic leather. The polyurethane synthetic leather comprises a base cloth layer, a foaming layer and a surface layer. The polyurethane synthetic leather comprises, by weight, 60-80 parts of aqueous polyurethane resin, 0.5-1 part of sodium alginate, 0.5-1 part of sodium cocoyl isethionate, 0.5-1 part of calcium stearyl lactylate, 3-8 parts of bone meal, 2-4 parts of soybean protein powder, 1-2 parts of ginger slag powder, 0.5-1 part of xanthan gum, 0.2-0.4 parts of gallic acid, 0.1-0.2 parts of bamboo leaf flavonoid, 1-2 parts of color paste and 2-6 parts of a composite assistant. The polyurethane synthetic leather has appearance and texture similar to those of real leather, has excellent moisture permeability and gas permeability, soft handle and physical properties reaching to standards, has good ageing resistance, effectively prolongs a product service life and has good practicality.

Description

A kind of weather-resistant pu synthetic leather and production method thereof
Technical field
The present invention relates to synthetic leather processing technique field, be specifically related to a kind of weather-resistant pu synthetic leather and production method thereof.
Background technology
Polyurethane (PU) synthetic leather, because it has excellent ABRASION RESISTANCE, good tearing toughness and percentage elongation, advantages such as there is smooth, the good hand feeling in surface simultaneously, comfortable, recovery is good, be moderate, become the best substitute of expensive natural leathercraft, and be widely used in the industries such as clothes, shoemaking, case and bag, furniture.Meet the requirements of Synthetic Leather and not only need good physical property, also need the style and the outward appearance that there is good moisture-inhibiting, permeability, softness, plentiful, slim and graceful feel and be more imbued with natural leather.
Summary of the invention
The object of this invention is to provide a kind of weather-resistant pu synthetic leather.
The present invention is achieved by the following technical solutions:
A kind of weather-resistant pu synthetic leather, comprises base cloth layer, foaming layer and surface layer, wherein:
Surface layer is obtained by the raw material of following weight parts:
Waterborne polyurethane resin 60-80, sodium alginate 0.5-1, cocoyl isethionate 0.5-1, CSL 0.5-1, bone meal 3-8, soyabean protein powder 2-4, ginger ground-slag 1-2, xanthans 0.5-1, gallic acid 0.2-0.4, bamboo-leaves flavones 0.1-0.2, color 1-2, composite assistant 2-6;
Foaming layer is obtained by the raw material of following weight parts:
Waterborne polyurethane resin 60-80, precipitated calcium carbonate 2-4, white carbon 1-2, polyethylene glycol 2-6, triethanolamine 1-2, aluminium oxide 0.1-0.3, diatomite 1-2, cocamidopropyl betaine 1-2, pull open powder 0.5-1, sodium bicarbonate 1-3, boric acid 1-2, guar gum 1-3;
Wherein composite assistant is made up of the raw material of following weight portion:
Tannic acid 0.5-1, oxalic acid 0.5-1, sorbierite 4-8, ramee 4-8, tossa 2-4, wheat stalk 2-4, Silane coupling agent KH550 0.2-0.5, triisopropanolamine 3-6, glycerine 25-50;
The preparation method of composite assistant is:
Add triisopropanolamine after ramee, tossa and wheat stalk being mixed and be tentatively ground to 50-100 order, add Silane coupling agent KH550 again, 60-80 DEG C, 600-800r/min stirs 10-30min, 500-800 order is ground to after drying, add oxalic acid, tannic acid, sorbierite and glycerine, 140-180 DEG C, 400-600r/min stirs 5-10h, after cooling and get final product;
A production method for weather-resistant pu synthetic leather, comprises the following steps:
(1) face stock is taken, bone meal, soyabean protein powder are ground to 200-300 order after mixing with ginger ground-slag, add the acetum 40-50 DEG C of process 6-8h of appropriate 2-6%, pH is adjusted to neutrality, 500-1000 order is ground to after freeze drying, add all the other raw materials 600-800r/min, 40-60 DEG C and stir 30-60min, obtain surface layer slurry; Surface layer slurry is evenly coated in release liners, after 100-120 DEG C of drying, forms surface layer;
(2) foaming layer raw material is taken, by 800-1000 DEG C of calcining 2-4h after aluminium oxide and diatomite mixing, cool the temperature to 400-600 DEG C, add white carbon and precipitated calcium carbonate post processing 1-2h, triethanolamine, sodium bicarbonate and boric acid is added after cooling, be ground to 500-800 order, add all the other raw materials 60-80 DEG C, 600-800r/min stirs 3-6h, obtain foaming layer slurry; Evenly be coated in after the foaming layer slurry mechanical foaming prepared on surface layer, 100-140 DEG C of oven dry;
(3) in foaming layer, apply aqueous polyurethane binding paste, rear 120-140 bonding with base cloth layer DEG C is dried;
(4) release liners peeled off, trimming rolling, obtains synthetic leather finished product.
Advantage of the present invention is:
Synthetic leather ageing-resistant performance of the present invention is strong, effectively improves the durability degree of product, extends product service life; Outward appearance, texture are close to corium, and moisture-inhibiting, permeability are excellent, soft, and physical property is up to standard, has both had natural leather institute inherent advantages, possess again excellent in chemical resistance, waterproof, anti-mildew etc. that natural leather does not possess simultaneously; Raw material sources are extensive, and price is cheaper relative to natural leather, effectively cost-saving; Manufacturing technique safety and environmental protection, reduces the discharge of noxious pollutant, meets industrial policy.
Detailed description of the invention
Non-limiting examples of the present invention is as follows:
Embodiment 1
A kind of weather-resistant pu synthetic leather, comprises base cloth layer, surface layer and foaming layer, wherein:
Surface layer is obtained by the raw material of following weight parts:
Waterborne polyurethane resin 70, sodium alginate 0.8, cocoyl isethionate 0.7, CSL 0.8, bone meal 6, soyabean protein powder 3, ginger ground-slag 1.5, xanthans 0.6, gallic acid 0.3, bamboo-leaves flavones 0.15, color 1.5, composite assistant 4;
Foaming layer is obtained by the raw material of following weight parts:
Waterborne polyurethane resin 70, precipitated calcium carbonate 3, white carbon 1.5, polyethylene glycol 4, triethanolamine 1.5, aluminium oxide 0.2, diatomite 1.5, cocamidopropyl betaine 1.5, pulls open powder 0.8, sodium bicarbonate 2, boric acid 1.5, guar gum 2;
Wherein composite assistant is made up of the raw material of following weight portion:
Tannic acid 0.8, oxalic acid 0.8, sorbierite 6, ramee 6, tossa 3, wheat stalk 3, Silane coupling agent KH550 0.4, triisopropanolamine 5, glycerine 40;
The preparation method of composite assistant is:
Add triisopropanolamine after ramee, tossa and wheat stalk being mixed and be tentatively ground to 100 orders, add Silane coupling agent KH550 again, 60 DEG C, 600r/min stirs 15min, 500 orders are ground to after drying, add oxalic acid, tannic acid, sorbierite and glycerine, 160 DEG C, 400r/min stirs 5h, after cooling and get final product;
Waterborne polyurethane resin used is Bayer Impranil LP RSC 1380(60% solid content).
A production method for weather-resistant pu synthetic leather, comprises the following steps:
(1) take face stock, bone meal, soyabean protein powder are ground to 200 orders after mixing with ginger ground-slag, add the acetum 50 DEG C process 6h of appropriate 4%, pH is adjusted to neutrality, be ground to 600 orders after freeze drying, add all the other raw materials 600r/min, 60 DEG C of stirring 50min, obtain surface layer slurry; Surface layer slurry is evenly coated in release liners, after 100 DEG C of dryings, forms surface layer;
(2) foaming layer raw material is taken, by aluminium oxide and the rear 800 DEG C of calcining 2h of diatomite mixing, cool the temperature to 400 DEG C, add white carbon and precipitated calcium carbonate post processing 2h, triethanolamine, sodium bicarbonate and boric acid is added after cooling, be ground to 500 orders, add all the other raw materials 80 DEG C, 600r/min stirs 3h, obtain foaming layer slurry; Evenly be coated in after the foaming layer slurry mechanical foaming prepared on surface layer, 120 DEG C of oven dry;
(3) in foaming layer, apply aqueous polyurethane binding paste, dry for bonding with base cloth layer latter 140 DEG C;
(4) release liners peeled off, trimming rolling, obtains synthetic leather finished product.
Properties of product test result:
Tensile load 52N/cm, tears load 35N;
Folding fastness 23 DEG C, 200,000 flawlesses.

Claims (2)

1. a weather-resistant pu synthetic leather, comprises base cloth layer, foaming layer and surface layer, it is characterized in that:
Described surface layer is obtained by the raw material of following weight parts:
Waterborne polyurethane resin 60-80, sodium alginate 0.5-1, cocoyl isethionate 0.5-1, CSL 0.5-1, bone meal 3-8, soyabean protein powder 2-4, ginger ground-slag 1-2, xanthans 0.5-1, gallic acid 0.2-0.4, bamboo-leaves flavones 0.1-0.2, color 1-2, composite assistant 2-6;
Described foaming layer is obtained by the raw material of following weight parts:
Waterborne polyurethane resin 60-80, precipitated calcium carbonate 2-4, white carbon 1-2, polyethylene glycol 2-6, triethanolamine 1-2, aluminium oxide 0.1-0.3, diatomite 1-2, cocamidopropyl betaine 1-2, pull open powder 0.5-1, sodium bicarbonate 1-3, boric acid 1-2, guar gum 1-3;
Described composite assistant is made up of the raw material of following weight portion:
Tannic acid 0.5-1, oxalic acid 0.5-1, sorbierite 4-8, ramee 4-8, tossa 2-4, wheat stalk 2-4, Silane coupling agent KH550 0.2-0.5, triisopropanolamine 3-6, glycerine 25-50;
The preparation method of described composite assistant is:
Add triisopropanolamine after ramee, tossa and wheat stalk being mixed and be tentatively ground to 50-100 order, add Silane coupling agent KH550 again, 60-80 DEG C, 600-800r/min stirs 10-30min, 500-800 order is ground to after drying, add oxalic acid, tannic acid, sorbierite and glycerine, 140-180 DEG C, 400-600r/min stirs 5-10h, after cooling and get final product.
2. the preparation method of a kind of weather-resistant pu synthetic leather according to claim 1, is characterized in that, comprise the following steps:
(1) face stock is taken, bone meal, soyabean protein powder are ground to 200-300 order after mixing with ginger ground-slag, add the acetum 40-50 DEG C of process 6-8h of appropriate 2-6%, pH is adjusted to neutrality, 500-1000 order is ground to after freeze drying, add all the other raw materials 600-800r/min, 40-60 DEG C and stir 30-60min, obtain surface layer slurry; Surface layer slurry is evenly coated in release liners, after 100-120 DEG C of drying, forms surface layer;
(2) foaming layer raw material is taken, by 800-1000 DEG C of calcining 2-4h after aluminium oxide and diatomite mixing, cool the temperature to 400-600 DEG C, add white carbon and precipitated calcium carbonate post processing 1-2h, triethanolamine, sodium bicarbonate and boric acid is added after cooling, be ground to 500-800 order, add all the other raw materials 60-80 DEG C, 600-800r/min stirs 3-6h, obtain foaming layer slurry; Evenly be coated in after the foaming layer slurry mechanical foaming prepared on surface layer, 100-140 DEG C of oven dry;
(3) in foaming layer, apply aqueous polyurethane binding paste, rear 120-140 bonding with base cloth layer DEG C is dried;
(4) release liners peeled off, trimming rolling, obtains synthetic leather finished product.
CN201410572270.XA 2014-10-23 2014-10-23 Aging-resistant polyurethane synthetic leather and production method thereof Pending CN104480738A (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113528712A (en) * 2021-08-03 2021-10-22 江苏国信复合材料科技股份有限公司 Preparation process of antibacterial waterproof composite leather for automobile ornaments
WO2022218977A3 (en) * 2021-04-12 2022-11-24 Nuvi Releaf Gmbh New layer composite for use as imitation leather
EP4169964A1 (en) 2021-10-22 2023-04-26 Benecke-Kaliko AG Polyurethane film or multilayer composite comprising at least one layer made of the polyurethane film

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007100289A (en) * 2005-09-09 2007-04-19 Dainippon Ink & Chem Inc Method for producing leathery material
CN101748613A (en) * 2009-12-18 2010-06-23 安徽安利合成革股份有限公司 Method for producing real leather intimating polyurethane synthetic leather
CN101941321A (en) * 2010-08-03 2011-01-12 丽水市优耐克水性树脂科技有限公司 Method for manufacturing synthetic leather and synthetic leather
CN102409552A (en) * 2011-09-02 2012-04-11 福建宝利特集团有限公司 Preparation method of environment-friendly foamed artificial leather
CN102965964A (en) * 2012-11-25 2013-03-13 安徽安利合成革股份有限公司 Manufacturing method of artificial super-soft abrasion-proof polyurethane shoe lining leather
CN102995450A (en) * 2012-10-23 2013-03-27 合肥市安山涂层织物有限公司 Polyvinyl chloride synthetic leather for luggage and manufacturing method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007100289A (en) * 2005-09-09 2007-04-19 Dainippon Ink & Chem Inc Method for producing leathery material
CN101748613A (en) * 2009-12-18 2010-06-23 安徽安利合成革股份有限公司 Method for producing real leather intimating polyurethane synthetic leather
CN101941321A (en) * 2010-08-03 2011-01-12 丽水市优耐克水性树脂科技有限公司 Method for manufacturing synthetic leather and synthetic leather
CN102409552A (en) * 2011-09-02 2012-04-11 福建宝利特集团有限公司 Preparation method of environment-friendly foamed artificial leather
CN102995450A (en) * 2012-10-23 2013-03-27 合肥市安山涂层织物有限公司 Polyvinyl chloride synthetic leather for luggage and manufacturing method thereof
CN102965964A (en) * 2012-11-25 2013-03-13 安徽安利合成革股份有限公司 Manufacturing method of artificial super-soft abrasion-proof polyurethane shoe lining leather

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022218977A3 (en) * 2021-04-12 2022-11-24 Nuvi Releaf Gmbh New layer composite for use as imitation leather
CN113528712A (en) * 2021-08-03 2021-10-22 江苏国信复合材料科技股份有限公司 Preparation process of antibacterial waterproof composite leather for automobile ornaments
CN113528712B (en) * 2021-08-03 2022-04-15 江苏国信复合材料科技股份有限公司 Preparation process of antibacterial waterproof composite leather for automobile ornaments
EP4169964A1 (en) 2021-10-22 2023-04-26 Benecke-Kaliko AG Polyurethane film or multilayer composite comprising at least one layer made of the polyurethane film

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