Polycarbonate resin blends containing titanium dioxide
US6133360A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1998 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Oct 23, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Thermoplastic resin compositions containing an aromatic polycarbonate resin and a surface modified titanium dioxide having a first coating and no further coatings are disclosed. The compositions may include a rubber modified graft copolymer comprising a discontinuous rubber phase dispersed in a continuous rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is chemically grafted to the rubber phase; a rigid copolymer; a fluoropolymer; and/or a flame retarding amount of an organophosphorus flame retardant. Preferred titanium dioxide include first coating materials of polyols or polysiloxanes. The thermoplastic resin compositions exhibit improved resistance to streaking compared to such thermoplastic resin compositions which incorporate titanium dioxide having a first coating and at least one additional coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.