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Acrylate modified polyurethane resin for leather finish and preparation method thereof

A technology of polyurethane resin and acrylate, which is applied in the direction of coating, etc., can solve the problems of limitation and difficulty in increasing solid content, and achieve the effects of fast reaction speed, excellent adhesion, and easy industrialization

Active Publication Date: 2014-05-07
DONGGUAN HONGDA POLYUREFHANE RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane molecules contain a large number of urethane bonds, ester bonds, ether bonds, etc., and its coating film has excellent solvent resistance, abrasion resistance, scratch resistance, good flexibility and elasticity, etc., but it is not easy to increase the solid content, limit some use of it
[0006] At present, no modified polyurethane coating products or documents specially used for leather, strong weather resistance and moderate price have been found in the market. Therefore, the present invention develops a kind of acrylic modified polyurethane resin and technology for leather finishing agent according to market needs. , and successfully modified the two, which has both the advantages of both and overcomes the shortcomings of both, so that it can fully meet the comprehensive material property requirements of leather finishing

Method used

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  • Acrylate modified polyurethane resin for leather finish and preparation method thereof
  • Acrylate modified polyurethane resin for leather finish and preparation method thereof
  • Acrylate modified polyurethane resin for leather finish and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0032] Embodiment 1: The acrylate-modified polyurethane resin for leather finishing provided in this embodiment is prepared from the following components in parts by weight:

[0033]

[0034] Described polyol is polyester polyol or polyether polyol, wherein, described polyester polyol is the polyol of adipic acid series, and described polyether polyol is polyoxypropylene glycol, poly Any one of oxypropylene triols, or a combination of two of them.

[0035] The solvent is a combination of one or more of ketones, benzenes, and esters; the chain extender small molecule alcohol is ethylene glycol, propylene glycol, methyl propylene glycol, 1,4 butanediol A composition of one or more of them; the isocyanate is a composition of one or two of toluene diisocyanate and isophordione diisocyanate.

[0036] Described antioxidant is the composition of one or both in 2,6-di-tert-butyl p-cresol, antioxidant 1010; Described catalyst is dibutyltin dilaurate, stannous octyl ester, , one or...

Embodiment 2

[0051] Embodiment 2: the acrylate-modified polyurethane resin for leather finishing provided by this embodiment, and the preparation method, its components and steps are basically the same as in Example 1, except that:

[0052] An acrylate-modified polyurethane resin for leather finishing, which is prepared from the following components in parts by weight:

[0053] Polyoxypropylene diol: 65g, toluene and the mixture of toluene and butyl acetate: 148g, 1,4 butanediol: 10g, antioxidant 1010: 0.04g, toluene diisocyanate: 34g, dibutyltin dilaurate: 0.03g, hydroquinone: 0.01g, hydroxypropyl acrylate: 2.88g, n-butanol: 1.56g, azobisisobutyronitrile: 1g, acrylic acid monomer: 77g, and the acrylic acid monomer is methacrylic acid A mixed liquid of 73 g of methyl ester and 4 g of acrylic acid.

[0054] The preparation method of the aforementioned acrylate-modified polyurethane resin for leather finishing, which comprises: weighing the aforementioned components in parts by weight;

[...

Embodiment 3

[0057] Embodiment 3: The acrylate-modified polyurethane resin for leather finishing provided by this embodiment, and the preparation method, its components and steps are basically the same as those in Embodiment 1 and 2, except that:

[0058] An acrylate-modified polyurethane resin for leather finishing, which is prepared from the following components in parts by weight: polyoxypropylene triol: 50g, toluene: 145.1g, a mixed solution of 1,4 butanediol and ethylene glycol : 7.88g, of which, 1,4-butanediol 5.4g, ethylene glycol 2.48g, 2,6-di-tert-butyl-p-cresol: 0.03g, toluene diisocyanate: 26.1g, dibutyltin dilaurate: 0.03 g, hydroquinone: 0.01g, hydroxypropyl methacrylate: 3.6g, n-butanol: 1.85g, azobisisobutyronitrile: 0.84g, acrylic acid monomer: 60g, wherein the acrylic monomer is formazan A mixed liquid made of 54.8 g of methyl acrylate and 5.2 g of acrylic acid.

[0059] The preparation method of the aforesaid acrylate-modified polyurethane resin for leather finishing com...

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Abstract

The invention discloses acrylate modified polyurethane resin for leather finish. The acrylate modified polyurethane resin for leather finish is characterized by being prepared from the following components in parts by weight: 50-65 parts of polyalcohol, 140.1-169.54 parts of solvent, 4-10 parts of chain extender micromolecular alcohol, 0.03-0.04 part of antioxidant, 16-34 parts of isocyanate, 0.02-0.03 parts of catalyst, 0.01-0.02 part of polymerization inhibitor, 2.1-3.6 parts of hydroxyl acrylate, 1.15-1.85 parts of end-capping reagent, 0.68-1 part of initiator and 55-77 parts of acrylic monomer. The invention further discloses a preparation method of the acrylate modified polyurethane resin for leather finish. By adopting polyurethane resin as a base material and acrylate as a main modifying material, the product provided by the invention has the advantages of two resins, and the cost is reduced by over 30% compared with that of pure polyurethane. The acrylate modified polyurethane resin for leather finish disclosed by the invention has excellent composite material performance and higher cost performance, so that the solid content is improved by over 50%.

Description

technical field [0001] The invention relates to the technical field of polymer modified coatings, in particular to an acrylate-modified polyurethane resin for leather finishing and a preparation method thereof. Background technique [0002] Acrylic resin is currently the most widely used leather finishing agent material in the world, and its annual output accounts for about 70% of the total leather finishing agent. From the perspective of production cost, process and comprehensive performance, acrylic resin as a finishing material is more Other chemical materials have many advantages, but there is nothing perfect in the world. One of its more prominent defects is hot stickiness and cold brittleness, which makes it easy to be restricted by natural conditions such as external temperature in use. [0003] Since 1987, the American Rohm and Hass company has successively developed new products, the second generation of acrylic resin (sGA), which has made a breakthrough in hot stic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08G18/67C08G18/66C08G18/42C08G18/48C09D151/08
Inventor 刘云发原素萍王瑞宏
Owner DONGGUAN HONGDA POLYUREFHANE RESIN
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