Polyurea adhesive compositions
US5654085A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1996 |
| Grant date | Aug 5, 1997 |
| Priority date | — |
| Expiry date | Feb 20, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249921
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method for adhering two or more substrates by PA1 (1) applying to a surface of one of said substrates a non-sagging polyurea adhesive composition comprising the reaction product of: PA2 (a) a polyphenyl polymethylene polyisocyanate or a urea-modified prepolymer thereof and PA2 (b) an isocyanate-reactive component comprising amines consisting essentially of PA3 (i) an aminocrotonate-terminated polyether containing at least two secondary amino groups prepared by reaction of a polyfunctional acetoacetylated polyether polyol with a primary monoamine, and PA3 (ii) a low molecular weight aromatic and/or aliphatic diamine, and PA1 (2) contacting said substrate with a surface of a second substrate, and PA1 (3) curing the polyurea adhesive composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.