Packaging foam polyurethane composition employing novel polyol blend
US4439551A · kind A · utility
21Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1983 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Mar 18, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/07
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Economical, open-celled packaging foams of better quality than foams from commercial aromatic polyester polyols may be prepared with a novel polyol blend. The most important component in the polyol blend is an aromatic polyester polyol made from dibasic acid waste streams and recycled polyethylene terephthalate. This type of polyol made from waste or recycled reactant streams is economical to make and serves as an inexpensive substitute for a portion of more expensive amino polyols normally used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.