Aromatic polyols made from waste streams from the manufacture of terephthalic acids, alkylene glycols and dibasic acids
US4444918A · kind A · utility
12Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1982 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Nov 22, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Mixtures of aromatic polyols containing ester functionalities suitable for use in rigid foams prepared by reacting dibasic acid residues with an alkylene glycol residue, the reaction product of which is reacted with terephthalic acid residues are described. These novel polyols may be blended with conventional polyols to yield excellent rigid foams, thus serving as useful polyol extenders. These low hydroxyl number extender polyols unexpectedly have a low relative viscosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.