Stable, liquid starch graft copolymer composition
US4301017A · kind A · utility
26Cited by
13References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Apr 28, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F251/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention discloses stable, aqueous polymeric dispersions comprised of at least 25% solids, dry basis, of a starch graft copolymer of a thinned and derivatized starch and at least one vinyl monomer. The starch has a degree of substitution of at least about 0.05 and an intrinsic viscosity of not less than about 0.12 deciliters per gram. The starch graft copolymers have a starch/monomer ratio of less than about 100/25. The dispersions are stable over extended periods of time at normal storage temperatures. Processes for the production of the dispersions are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.