Novel polyacetal terpolymers of trioxane and alpha, alpha- and alpha, beta-isomers of glycerol formal and functional derivatives thereof
US4975519A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1989 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | May 12, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G4/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cationic polymerization of trioxane and a mixture of ester derivatives of .alpha.,.alpha.- and .alpha.,.beta.-isomers of glycerol formal yields acetal terpolymers having pendant functional groups (i.e., ester groups, or hydroxyl groups obtained by hydrolyzing ester groups, pendent from the polymer's backbone). The glycerol formal monomers employed in this invention may include functional groups selected from ester moieties which are protected from, and thus survive, the polymerization process with trioxane. These groups may then be present as functional reactive sites for the subsequent synthesis of block polymers and/or to chemically bind modifiers to the acetal terpolymer backbone, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.