Process for warp-free pigmenting of polyolefins
US6180694A · kind A · utility
5Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1994 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Dec 20, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The instant invention relates to a process for the warp-free pigmenting of polyolefins, which process comprises admixing coated pigment particles with a polyolefin, wherein said coated pigment particles are prepared by coating organic pigment particles with one or more films of a preformed polymer by adsorption thereon of from 1 to 10% by weight of the polymer, based on the pigment particles, at room temperature, the polymer being selected from the group consisting of polyvinylpyrrolidone homopolymers and copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.