Claims
- 1. A compatibilized, filled polyolefin composition obtained by a process which comprises encapsulating hydroxyl group containing filler particles with a coating of a polyolefin by mixing said filler particles and said polyolefin and thereafter mixing with maleic anhydride or poly(maleic anhydride) and a free radical catalyst under conditions which will generate free radicals on the polyolefin, whereby said polyolefin coating is coupled to said filler, said composition being thermoplastic.
- 2. A compatibilized, filled polyolefin composition obtained by a process which comprises coating hydroxyl group containing filler particles with a coating of a polyolefin by mixing said filler particles and said polyolefin annd thereafter mixing with maleic anhydride or poly(maleic anhydride) and a free radical catalyst under conditions which will generate free radicals on the polyolefin, whereby said polyolefin coating is coupled to said filler, and said polyolefin coated filler particles are thereafter dispersed in a polyolefin matrix, said composition being thermoplastic.
Parent Case Info
This application is a continuation of application Ser. No. 643,820, filed Dec. 23, 1975 now U.S. Pat. No. 4,071,494, which was a continuation-in-part of application Ser. No. 66,107, filed Aug. 21, 1970, now U.S. Pat. No. 3,956,230, which was a continuation-in-part of application Ser. No. 702,204, filed Feb. 1, 1968 now U.S. Pat. No. 3,645,939.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3304197 |
Pundsack et al. |
Feb 1967 |
|
3471439 |
Bixler et al. |
Oct 1969 |
|
3519593 |
Bolger |
Jul 1970 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
643820 |
Dec 1975 |
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Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
66107 |
Aug 1970 |
|
Parent |
702204 |
Feb 1968 |
|