Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1980-07-11
1983-04-12
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524140, 524304, 524312, 524342, 524343, 524526, C08K 505, C08K 513, C08F22014
Patent
active
043798764
ABSTRACT:
Methyl methacrylate-butadiene-styrene polymer impact modifiers are improved by mixing them with about 0.01 to 5 percent by weight of a compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 are C.sub.1 to C.sub.4 alkyl, R.sub.3 and R.sub.4 are H, C.sub.1 to C.sub.4 alkyl, or 4'-hydroxy-2'-R.sub.2 -5'-R.sub.1 -phenyl. Polyvinyl chloride (PVC) is mixed with the improved impact modifiers and has improved dispersion and resistance to discoloration.
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Clikeman Richard R.
Jones Donald H.
Shortridge Thomas J.
Troy Edward J.
Bleutge John C.
Driks Jordan J.
Lilling Herbert J.
Rohm and Haas Company
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