Polymeric plasticizers and a process for preparing the same
US5281647A · kind A · utility
34Cited by
12References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Nov 10, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a polymeric plasticizer and a process for plasticizing material therewith; said polymeric material comprises a reaction product of a diacid with a highly hindered diol and another diol in a stoichiometric excess of the acid over the diol, followed by reacting the resulting product containing an acid end group with an alcohol, followed by removing residual alcohol to obtain a final product having a hydroxyl value of less than 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.