Prepolymer compositions for insulating foams
US6552097B1 · kind B1 · utility
8Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2000 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | May 15, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S528/905
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A prepolymer composition for producing polyurethane insulating foams from pressure tanks which consists of a prepolymer component with at least one PU prepolymer with a content of NCO groups of 4 to 20 wt % and usual additives, as well as a propellant component, wherein a polyisocyanate with a content of less than 2 wt %, based on the prepolymer component, of monomeric isocyanate is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.