Polymer polyols with ultra-high solids contents
US7759423B2 · kind B2 · utility
22Cited by
33References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 2, 2004 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Sep 20, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to ultra-high solids content polymer polyols which have good filterability while maintaining a reasonable viscosity, and to a process for the preparation of these ultra-high solids contents polymer polyols. These polymer polyols comprise the free-radical polymerization product of (A) a base polyol, (B) a pre-formed stabilizer, (C) at least one ethylenically unsaturated monomer, (D) at least one free-radical polymerization initiator, and (E) at least one chain transfer agent. The solids contents varies from 60% to about 85% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.