Use of bo polyols to improve compatibility of pentane and cyclopentane in rigid polyurethane foams
US6322722A · kind A · utility
8Cited by
16References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1999 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | May 4, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is a polyol mixture that is useful for preparing polyurethane and polyisocyanurate foams. The polyol mixture of the present invention includes: a polyol that is derived from butylene oxide; and a hydrocarbon blowing agent such as pentane or cyclopentane, for example. Use of butylene oxide polyols of the present invention allow inclusion of a sufficient amount of a hydrocarbon blowing agent to produce foams having low density, without incorporating a higher concentration of water into a polyurethane foam formulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.