Claims
- 1. A silicone copolymer-polyetherimide blend having a T.sub.g of at least 190.degree. C. comprising by weight,
- (A) about 1-99% of polyetherimide, and
- (B) about 99%-1% of silicone copolymer comprising from about 10 to 70 mole percent of disiloxane units of the formula, ##STR10## intercondensed with from 90 to 30 mole % of etherimide units of the formula, ##STR11## where R is a member selected from the class consisting of the same or different C.sub.(1-14) monovalent hydrocarbon radicals and C.sub.(1-14) monovalent hydrocarbon radicals substituted with radicals inert during intercondensation, R.sup.1 is selected from the class consisting of divalent C.sub.(2-20) organic radicals and halogenated derivatives thereof, R.sup.2 is a divalent C.sub.(6-30) aromatic organic radical, and n is an integer having a value of 1 to 5 inclusive.
- 2. A blend in accordance with claim 1, where ##STR12##
- 3. A silicone copolymer polyetherimide blend in accordance with claim 1, where R is methyl, ##STR13## and n is 1.
- 4. A silicone copolymer polyetherimide blend in accordance with claim 1, which is substantially transparent.
- 5. A silicone copolymer-polyether blend in accordance with claim 1, where R is methyl, R.sup.1 is a mixture of ##STR14## and n is 1.
- 6. A blend in accordance with claim 1, where R.sup.1 is ##STR15##
- 7. A blend in accordance with claim 1, of about 50% by weight of polyetherimide and 50% by weight of silicone copolymer.
- 8. A silicone copolymer polyetherimide blend in accordance with claim 1, where R is methyl, ##STR16## and n is 1.
- 9. A blend of silicone copolymer and a polyetherimide having a T.sub.g of at least 190.degree. C. comprising by weight,
- (A) about 1-99% of polyetherimide, and
- (B) about 99-1% of silicone copolymer comprising from about 10 to 50 mole percent of disiloxane units of the formula, ##STR17## intercondensed with from 90 to 50 mole % of etherimide units of formula, ##STR18## where R is a member selected from the class consisting of the same or different C.sub.(1-14) monovalent hydrocarbon radicals and C.sub.(1-14) monovalent hydrocarbon radicals substituted with radicals inert during intercondensation, R.sup.1 is selected from the class consisting of divalent C.sub.(2-20) organic radicals and halogenated derivatives thereof, R.sup.2 is a divalent C.sub.(6-30) aromatic organic radical, and n is an integer having a value of 1 to 5 inclusive.
- 10. A blend in accordance with claim 9, where ##STR19##
REFERENCE TO RELATED APPLICATION
The present application is a continuation-in-part of application Ser. No. 067,200, filed June 29, 1987, and now abandoned, assigned to the same assignee as the present invention and incorporated herein by reference.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4258155 |
Holub et al. |
Mar 1981 |
|
4387193 |
Giles Jr. |
Jun 1983 |
|
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
067200 |
Jun 1987 |
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