Solid, self-bondable isocyanate-containing organic polymers and methods for using same
US9840576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2013 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Jun 12, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2475/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Solid, non-melting polyurethanes having a glass transition temperature of at least 40° C. and free isocyanate groups are self-bonding materials that are useful in a variety of adhesive and molding operations. Under conditions of heat and moisture, these polyurethanes will self-bond. The polyurethanes can be used as adhesive coatings, which are solid and non-tacky and thus can be transported and stored easily under ambient conditions. These polyurethane adhesives are especially useful in applications in which, due to the location and/or orientation of the substrates, liquid or melting materials cannot be applied easily or will run off the substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.