Claims
- 1. A particulate styrene polymer, containing blowing agent, which is surface-coated with from 0.05 to 1% by weight of an ester of a hydroxycarboxylic acid having 3-6 carbon atoms with an alcohol having 10-20 carbon atoms.
- 2. A particulate styrene polymer, containing blowing agent, as claimed in claim 1, which is coated with a tristearyl citrate.
- 3. A particulate styrene polymer, containing blowing agent, as claimed in claim 1, which is coated with a mixture of a hydroxycarboxylic acid ester and a glycerol ester in the weight ratio of from 5:1 to 1:5.
- 4. A particulate styrene polymer, containing blowing agent, as claimed in claim 1, wherein said hydroxycarboxylic acid is citric acid and said alcohol has 10 to 20 carbon atoms.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3030053 |
Aug 1980 |
DEX |
|
Parent Case Info
This is a continuation, of application Serial No. 286,662, filed July 24, 1981.
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Foreign Referenced Citations (1)
Number |
Date |
Country |
1408267 |
Oct 1975 |
GBX |
Non-Patent Literature Citations (1)
Entry |
"Chemical Abstracts", 89,130509w (1978). |