Weather resistant polyurethane elastomer

A technology of polyurethane elastomers and elastomers, applied in the field of polyurethane elastomers, can solve problems such as no working examples

Inactive Publication Date: 2008-12-10
BAYER MATERIALSCIENCE AG
View PDF28 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While various patents generally disclose cycloaliphatic isocyanates in a long list of isocyanates described as being suitable for the RIM process, few patents mention any working examples using cycloaliphatic isocyanates

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
  • Weather resistant polyurethane elastomer
  • Weather resistant polyurethane elastomer
  • Weather resistant polyurethane elastomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0081] Isocyanate A: A trimer of isophorone diisocyanate with an NCO group content of about 30%,

[0082] Functionality is about 2.3, catalyzed by N,N,N-trimethylbenzene-methylammonium hydroxide

[0083] Preparation of partial trimerization of isophorone diisocyanate in the presence of

[0084] The proportion of the body is about 65% by weight: 35% by weight

[0085] Polyol A: Polyether polyols having a nominal functionality of about 3 and a molecular weight of about 6000,

[0086] The OH value is about 28 and the maximum unsaturation content is about 0.005 meq / g.

[0087]The polyether polyol comprises the reaction product of glycerol with propylene oxide / ethylene oxide

[0088] Compounds, containing about 20% EO capping, in the presence of double metal cyanide catalysts

[0089] Made under.

[0090] Polyol B: Crosslinking agent with a nominal functionality of a...

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
Functional group degreeaaaaaaaaaa
Functional group degreeaaaaaaaaaa
Functional group degreeaaaaaaaaaa
Login to view more

Abstract

This invention relates to polyurethane elastomers and to a process for their production. These elastomers comprise the reaction product of a (cyclo)aliphatic isocyanate component having an NCO group content of about 20 to about 45%, with an isocyanate-reactive component comprising one or more low unsaturation polyether polyols, a low molecular weight organic compound containing two hydroxyl groups and which is free of amine groups, and, optionally, one or more organic compounds having a molecular weight of about 200 to about 500, a hydroxyl functionality of 3 to 4 and comprising an amine-initiated polyether polyol.

Description

Background of the invention [0001] The present invention relates to a polyurethane elastomer with improved weather resistance and a production method thereof. [0002] The production of polyurethane molded articles by reaction injection molding (ie RIM) technology is well known and described, for example, in US Patent 4,218,543. The RIM method involves a mold-filling technique by which highly active liquid starting components are mixed in a very short time using high-output, high-pressure metering equipment after they have been mixed in a so-called "fully controlled mixing head" Inject into the mold. [0003] In the production of polyurethane moldings by the RIM process, the reaction mixture generally comprises a part A based on a polyisocyanate and a part B based on an organic compound containing isocyanate-active hydrogen atoms, and suitable chain extenders, catalysts, Foaming agents and other additives. Polyisocyanates suitable for commercial RIM processes are aromatic i...

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): C08G18/79C08G18/20C08G18/48
CPCC08G18/482C08G18/4841C08G18/4866C08G18/5024C08G18/6674C08G18/792C08G2120/00C08G18/20C08G18/24C08G18/48C08G18/79
Inventor S·J·哈拉辛R·R·罗斯勒R·V·斯塔彻C·L·金尼J·T·加勒特
Owner BAYER MATERIALSCIENCE AG
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