Low gloss, flame reterdant, impact resistant polycarbonate composition
US4710534A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1985 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Dec 9, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition comprising PA0 (a) a major quantity of aromatic polycarbonate; PA0 (b) a minor amount of a polyalkylene terephthalate wherein the alkylene group is from 2 to about 10 carbon atoms, and is present in such quantities so as to substantially reduce the DTUL of the polycarbonate; PA0 (c) an effective amount of a combination of impact modifier and gloss suppressant selected from an olefin diene copolymer and an acrylonitrile-butadiene-alkenylaromatic copolymer; and PA0 (d) an effective amount of flame retardant system to maintain a VO rating for a 1.6 mm sample under UL 94 test conditions wherein the overall composition has a DTUL in .degree.C. of less than or equal to 115.degree. C., a 3.2 mm Notched Izod impact resistance in kilograms f-cm per cm of at least about 10, a surface gloss as measured with a Hunter Lab's gloss meter at 60.degree. reflection of less than or equal to about 80 and a VO rating for a 1.6 mm sample under UL test conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.