Composite pigmenting particles as thermostabilizers of plastic materials
US4677142A · kind A · utility
3Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1986 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Apr 7, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Thermoplastic elastomer compositions such as those block polymers containing nonelastomeric polymer blocks and elastomeric polymer blocks exhibit improved stability upon thermal stress due to the addition thereof colloidal size particles of an inorganic solid (e.g., Al.sub.2 O.sub.3) which are dispersed in a hydrophobic polymer matrix (e.g., a copolymer of styrene and n-butylacrylate). Such thermoplastic elastomer compositions are useful in applications where articles which are prepared from the thermoplastic elastomers are exposed to repeated thermal stresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.