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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
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  • 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

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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.

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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

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Application Information

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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
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