Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1996-01-16
1997-05-27
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526319, 526348, 526261, 526273, 526321, 526336, C08F 200, C08F21804, C08F21002
Patent
active
056333340
ABSTRACT:
A process for the preparation of emulsion polymers comprising 70 to 95% by weight of a vinyl ester and 5 to 30% by weight ethylene, the polymerization being carried out in the presence of 2 to 8% by weight of a protective colloid consisting of a blend of 1 to 3 percent by weight of 80% hydrolyzed polyvinyl alcohol, 0 to 2 percent by weight of 88% hydrolyzed polyvinyl alcohol and 1 to 3 percent by weight of 96% hydrolyzed polyvinyl alcohol, the blend having an average level of hydrolysis of 85 to 88%.
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Covol Polyvinyl, "CPC International--Now a Source for Both Synthetic and Natural Polymers!".
Mudge Paul R.
Rosenski Josephine M.
Walker James L.
Cheng Wu C.
Dec Ellen T.
National Starch and Chemical Investment Holidng Corporation
Schofer Joseph L.
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