Sealant and adhesive using green prepolymer
US9309439B2 · kind B2 · utility
4Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2011 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Jun 8, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane prepolymer comprising the reaction product of a reactant formulation comprising a polyol entirely derived from a natural oil; a natural oil-petroleum blend polyol; an isocyanate, at least one catalyst, drying agent, and plasticizer, wherein the prepolymer has a bio-based content of from about 15% to about 75% by weight. The prepolymer may be used in adhesive, or sealant compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.