Claims
- 1. A process for preparing bead-form expandable polymers having a reduced internal water content, which process comprises polymerizing styrene in an aqueous suspension, said suspension comprising
- (a) dibenzoyl peroxide;
- (b) dicumyl peroxide in an amount of from 0.1 to 0.6% by weight, based on the monomers;
- (c) dimeric .alpha.-methylstyrene in an amount of from 0.005 to 1% by weight, based on the monomers;
- (d) a polyethylene wax in an amount of from 0.005 to 1.5%, based on the monomers;
- (e) a suspension stabilizer; and
- (f) a blowing agent.
- 2. The process of claim 1, wherein the amount of dicumyl peroxide used is from 0.2 to 0.6% by weight.
Priority Claims (1)
Number |
Date |
Country |
Kind |
43 05 697.0 |
Feb 1993 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/199,012, filed on Feb. 18, 1994 now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (4)
Number |
Date |
Country |
450694 |
Jan 1991 |
EPX |
3347279 |
Jul 1985 |
DEX |
997356 |
Jul 1965 |
GBX |
1012277 |
Dec 1965 |
GBX |
Continuations (1)
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Number |
Date |
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Parent |
199012 |
Feb 1994 |
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