Compositions of siloxane polycarbonate block copolymers and high heat polycarbonates
US5455310A · kind A · utility
67Cited by
17References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 15, 1994 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Aug 15, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic composition which comprises a siloxane polycarbonate block copolymer wherein the polysiloxane segments of the copolymer are of the formula: ##STR1## where R.sup.1, R.sup.2, Y, D, A, X, A' and E are as defined herein, and high heat polycarbonates containing recurring or repeating polycarbonate units of the formula: ##STR2## wherein Z is --O--, --N(R.sup.3)-- or a mixture thereof and R.sup.3 is selected from hydrogen, hydrocarbyl and halogen-substituted hydrocarbyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.