Solvent-free polyurethane sofa leather and preparation method thereof

A solvent-free polyurethane and sofa leather technology, applied in the field of synthetic leather, to achieve the effect of saving investment, improving chemical resistance and reducing investment scale

Inactive Publication Date: 2016-09-28
JIANGSU GUOXIN SYNTHETIC LEATHER
View PDF7 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic technology application is still in the exploration stage of simple varieties

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A solvent-free polyurethane sofa leather. The synthetic leather is mainly divided into a surface layer and a foam layer. In order to completely reduce VOC, both the surface layer and the foam layer are made of two-component solvent-free polyurethane. The process is made by pouring and drying. The two-component polyurethane resin is divided into A\B two components. A component is the solvent-free hydroxyl mixture resin part, and B component is the isocyanate resin part. The mass composition of component A: 100 parts of solvent-free polyester polyol mixed resin (Asahikawa), 0.1 part of polyether modified polyorganosiloxane defoamer, 0.2 part of CA-908 water-based polyurethane thickener, Changhui BNK -0.2 part of LK600 leveling agent, 0.1 part of MOLYKOTE 557 silicone dry slip agent, 0.05 part of dibutyltin dilaurate, 0.3 part of DT-100 crosslinking agent, 0.1 part of solvent-free color paste, 0.1 part of tertiary amine catalyst.

[0027] Concrete preparation method comp...

Embodiment 2

[0033] According to the ratio, component A and component B are mixed respectively through the air pressure of the material tank to the solvent-free dry process equipment line and poured on the release paper, and the uniform coating is achieved through the spray gun pouring machine; 80 ℃ drying, drying The time is 10 minutes, and the surface layer resin is prepared; the A component and the B component are respectively mixed according to the ratio through the air pressure of the material tank to the solvent-free dry process equipment line, and poured onto the above-mentioned dried surface layer resin, and carried out Semi-drying at 100°C for 3 minutes; attach the semi-dried foam layer resin obtained in the first step to the base fabric and then cure in an oven at 100°C for 15 minutes; peel off the release paper after the product is matured, and wind up to obtain the required Solvent-free polyurethane sofa leather without any solvents.

Embodiment 3

[0035] According to the ratio, component A and component B are mixed respectively through the air pressure of the material tank to the solvent-free dry process equipment line and poured on the release paper, and the uniform coating is achieved through the spray gun pouring machine; 90 ° C drying, drying The time is 6 minutes, and the surface layer resin is prepared; the A component and the B component are respectively mixed according to the ratio through the air pressure of the material tank to the solvent-free dry process equipment line, and poured onto the above-mentioned dried surface layer resin, and carried out Semi-drying at 110°C for 2 minutes; paste the semi-dried foam layer resin obtained in the first step to the base fabric and then cure it in an oven at 110°C for 10 minutes; peel off the release paper after the product is matured, and wind it up to obtain the required Solvent-free polyurethane sofa leather without any solvents.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses solvent-free polyurethane sofa leather. The solvent-free polyurethane sofa leather comprises a surface layer and a foaming layer, wherein both the surface layer and the foaming layer are prepared from two-component polyurethane resin; the two-component polyurethane resin is prepared from a component A and a component B; the component A adopts solvent-free hydroxyl mixture resin; the component B adopts isocyanate; dosages of the component A and the component B are counted by OH and NCO, and the mass ratio of OH: NCO of the component A and the component B is 2:(1 to 1.6); the component A comprises the following components in parts by mass: 100 parts of solvent-free hydroxyl mixture resin, 0.1 to 0.3 part of a defoaming agent, 0.1 to 0.5 part of a thickening agent, 0.2 to 0.5 part of a flatting agent, 0.05 to 0.1 part of an organosilicon dry lubricant, 0.05 to 0.2 part of a drying agent, 0.1 to 0.3 part of a cross-linking agent, and 0.8 to 3.5 parts of solvent-free color paste. Meanwhile, the invention further discloses a preparation method of the solvent-free polyurethane sofa leather. The solvent-free polyurethane sofa leather is scientific and simple, pollution-free, low in energy consumption, investment saving, and excellent in product quality.

Description

technical field [0001] The invention belongs to the field of synthetic leather, and in particular relates to a solvent-free polyurethane sofa leather and a preparation method thereof. Background technique [0002] Polyurethane sofa leather is mainly produced by using solvent-free polyurethane resin instead of traditional solvent-based polyurethane resin. At present, domestic production is still based on solvent-based resins, and its DMF solvent residues cause environmental pollution problems in production and use sites that cannot be completely and effectively solved. [0003] Solvent-free polyurethane sofa leather processing uses solvent-free polyurethane resin instead of solvent-based resin as raw material, and produces leather products through a new leather production line. Solvent-free polyurethane resin does not contain toxic organic chemical solvents, has no harm to the environment, and meets the high requirements of ecological environmental protection. Solvent-free ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/147D06N3/0043D06N3/0059D06N3/0077D06N3/0097D06N2211/28
Inventor 毛力毛国兵薛建伟
Owner JIANGSU GUOXIN SYNTHETIC LEATHER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap