Core-shell polymers having hydrophilic shells for improved shell coverage and anti-blocking properties
US7195820B2 · kind B2 · utility
5Cited by
15References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2004 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Nov 3, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2989
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to core-shell polymers having a hydrophilic copolymer shell, and a high level of core material of from 75 to 95 weight percent. The hydrophilic shell provides better coverage of the core resulting in better powder properties such as anti-blocking. The hydrophilic shell also allows for a thinner shell and a larger elastomeric core. Core-shell polymers of the invention are especially useful as impact modifiers for plastic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.