Flame-retardant thermoplastic resin composition and products of injection molding thereof
US6414072B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1999 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Sep 29, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A flame-retardant thermoplastic resin composition, which comprises a polymer alloy composed of a thermoplastic resin (A) and a liquid-crystal polymer (B), is excellent in the stability of the heat retentivity imparted thereto in the injection molding step, exhibits an extremely high reinforcing effect which has been unattainable heretofore because the liquid-crystal polymer can be readily fiberized in the molding step, and provides moldings excellent in flame retardancy. Injection moldings comprising a liquid-crystal polymer (B) in the form of fibers having an average aspect ratio of at least 6 and micro-dispersed in a matrix phase comprising a thermoplastic resin (A), are produced by injection-molding a flame-retardant thermoplastic resin composition obtained by blending 100 parts by weight of the resin component comprising:(A) 99 to 50 parts by weight of a thermoplastic resin not forming an anisotropic molten phase and(B) 1 to 50 parts by weight of a liquid-crystal polymer capable of forming an anisotropic molten phase with:(C) 1.0 to 20 parts by weight of a halogen-containing organic compound and(D) 0.01 to 10 parts by weight of a fluorine compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.