Modified terephthalic ester polyols and rigid foams therefrom
US4644019A · kind A · utility
11Cited by
13References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Oct 28, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The preparation of isocyanurate foams from a recycled polyethylene terephthalate polyol modified with a polyethoxylated nonylphenol is disclosed. These modified foams exhibit improved fluorocarbon solubility. The foams may be used for building roofing and sheathing applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.