Hot melt processable polyurea copolymers and methods of their preparation and use
US8202934B2 · kind B2 · utility
4Cited by
24References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2007 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Jul 31, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2170/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Packaged viscoelastic compositions comprising viscoelastic copolymers and a packaging material are disclosed. The viscoelastic copolymers are urea copolymers, which are the reaction product of polyisocyanates and polyamines. The packaged viscoelastic compositions are hot melt processable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.