Toughened thermoplastic resins
US6281286A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1999 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Sep 9, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic composition having a high impact strength is disclosed, said composition being prepared by PA1 (I) mixing PA2 (A) a thermoplastic selected from a polyester resin or a polyamide resin, PA2 (B) a silicone component comprising PA3 (B') a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl radicals in its molecule and PA3 (B") a fumed silica filler, PA2 (C) an organohydrido silicon compound which contains an average of at least 2 silicon-bonded hydrogen groups in its molecule, and PA2 (D) a hydrosilation catalyst, components (C) and (D) being present in an amount sufficient to cure said diorganopolysiloxane; and PA1 (II) dynamically curing said diorganopolysiloxane gum. When the above composition is based on preferred poly(butylene terephthalate) resins, molded components thereof exhibit an Izod impact strength of at least 14 ft-lb (747 J/m), this high impact strength also being realized by blending the poly(butylene terephthalate) resin with a polycarbonate resin, the fumed silica then being an optional component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.