Synergistic amine chain-extenders in polyurea spray elastomers
US7078475B2 · kind B2 · utility
7Cited by
122References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2002 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Jun 11, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2150/50
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are derivatives of isophorone diamine exhibiting a synergistic relationship with other commonly employed chain extenders offering enhanced efficacy with regard to slowing of the polyurea elastomer cure profile, and processes employing their use. According to the invention, extensions of the gel-free and tack-free times are more readily achieved at lower loading levels for these chain extender blends than are afforded through the sole use of the individual molecules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.