Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Urethane resin composition and leather sheet

A technology of urethane and resin composition, applied in textiles and papermaking and other directions, can solve the problem of difficulty in taking into account the stability of the hand feeling and the preparation solution, and achieve the effect of excellent hand feel and the stability of the preparation solution

Pending Publication Date: 2022-07-08
DIC CORP
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in existing products including the invention described in Patent Document 1, it is difficult to achieve both excellent texture and stability of the prepared solution.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Urethane resin composition and leather sheet
  • Urethane resin composition and leather sheet
  • Urethane resin composition and leather sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] In a four-necked flask including a stirrer, a reflux cooling tube, a thermometer, and a nitrogen injection tube under a nitrogen gas flow, a biomass-derived polycarbonate polyol ("Beniol ("Beniol ("Beniol) manufactured by Mitsubishi Chemical Co., Ltd.) was added Benebiol)NL-3010DB", 1,4-butanediol and 1,10-decanediol derived from biomass as raw materials, number average molecular weight: 3,000, hereinafter referred to as "bio PC (bio PC) (1) ”) 400 parts by mass, dimethylolpropionic acid (hereinafter referred to as “DMPA”) 6.2 parts by mass, polyoxyethylene polyoxypropylene glycol (number average molecular weight: 1,750, EO / PO=50 / 50, hereinafter referred to as "EOPO(1)") 32 parts by mass and 516 parts by mass of methyl ethyl ketone, after uniform mixing, 78 parts by mass of dicyclohexylmethane diisocyanate (hereinafter referred to as "H12MDI") was added, and then 0.1 part by mass of bismuth octoate was added , react at 70° C. for about 1 hour to obtain a methyl ethyl ke...

Embodiment 2

[0063]In a four-necked flask including a stirrer, a reflux cooling tube, a thermometer, and a nitrogen injection tube under a nitrogen stream, a biomass-derived polycarbonate polyol ("Beniol ("Beniol ("Beniol) manufactured by Mitsubishi Chemical Co., Ltd.) was added. Benebiol)NL-3030DB", 1,4-butanediol and 1,10-decanediol derived from biomass as raw materials, number average molecular weight: 3,000, hereinafter referred to as "bio-PC(2)") 400 mass parts, 6.2 parts by mass of DMPA, 32 parts by mass of EOPO(1), and 516 parts by mass of methyl ethyl ketone. After uniform mixing, 78 parts by mass of H12MDI was added, and then 0.1 part by mass of bismuth octoate was added, and the reaction was carried out at 70° C. for about 1 hour. , to obtain a methyl ethyl ketone solution of urethane polymer. Next, 5 parts by mass of triethylamine and 16 parts by mass of EOPO emulsifier (1) were added to the methyl ethyl ketone solution of the urethane polymer obtained by the method, and mixed, ...

Embodiment 3

[0065] Under nitrogen flow, in a four-necked flask including a stirrer, a reflux cooling tube, a thermometer and a nitrogen injection tube, add 400 parts by mass of biological PC (1), 6.2 parts by mass of DMPA, polyoxyethylene polyoxypropylene glycol (number average Molecular weight: 1,400, EO / PO=75 / 25, hereinafter referred to as “EOPO(2)”) 32 parts by mass, 518 parts by mass of methyl ethyl ketone, after uniform mixing, 80 parts by mass of H12MDI was added, and then 0.1 parts by mass of bismuth octoate was added parts by mass, and reacted at 70° C. for about 1 hour to obtain a methyl ethyl ketone solution of a urethane polymer. Next, 5 parts by mass of triethylamine and 16 parts by mass of EOPO emulsifier (1) were added to the methyl ethyl ketone solution of the urethane polymer obtained by the method, and mixed, and then ion-exchanged water was added. 788 parts by mass, and 7.8 parts by mass of piperazine were added, and then methyl ethyl ketone was distilled off under reduc...

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

PropertyMeasurementUnit
Acid valueaaaaaaaaaa
Acid valueaaaaaaaaaa
Login to View More

Abstract

The present invention addresses the problem of providing a urethane resin composition which uses a biomass raw material in a water-containing urethane resin composition, and which has excellent oil acid resistance, texture, and formulated liquid stability. The present invention provides a urethane resin composition characterized by containing (A) a urethane resin having an anionic group and a nonionic group, (B) a nonionic emulsifier, and (C) water, the urethane resin (A) using a polycarbonate polyol (a1) as a raw material, and the polycarbonate polyol (a1) using a biomass-derived decanediol as a raw material. Furthermore, the present invention provides a leather sheet which is characterized in that a coagulum of the urethane resin composition is present in a fiber base material. Each of the urethane resin (A) and the nonionic emulsifier (B) preferably has an oxyethylene group and an oxypropylene group.

Description

technical field [0001] The present invention relates to a urethane resin composition and a leather sheet. Background technique [0002] Polyurethane resins are widely used in the manufacture of synthetic leather (including artificial leather) due to their good mechanical strength and hand feeling. Among these uses, solvent-based urethane resins containing N,N-dimethylformamide (DMF) have been the mainstream so far. However, against the background of DMF regulations in Europe, the strengthening of volatile organic compounds (VOC) emission regulations in China, and DMF regulations in large garment manufacturers, urethanes for various layers constituting synthetic leather have been sought. DeDMFization of resins. [0003] In order to cope with such an environment, a urethane resin composition in which a urethane resin is dispersed in water has been widely studied (for example, refer to Patent Document 1). However, in the current product including the invention described in t...

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
IPC IPC(8): C08L75/06C08G18/08C08G18/44D06N3/14
CPCC08L75/06C08G18/44C08G18/0823C08G18/485C08G18/758C08G18/3206C08G18/227C08G18/6674C08G18/755C08G18/722D06N2211/28D06N3/146C08J5/046C08J2375/06C08G18/32C08J3/03C08G18/12C08G64/0208C08G65/06
Inventor 前田亮曾雅怡
Owner DIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com