Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1988-03-18
1988-11-22
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
524558, 524560, 526328, C08J 200
Patent
active
047866969
ABSTRACT:
A process for the preparation of infusible, solvent-insoluble, solvent-dispersible, inherently tacky elastomeric polymeric microspheres without the use of a suspension stabilizer comprising the steps of: (a) charging to a reaction vessel: (1) at least one alkyl acrylate or methacrylate ester monomer; (2) at least one emulsifier at a concentration above its critical micelle concentration; and (3) an effective amount of at least one substantially water insoluble polymerization initiator; (b) agitating the reaction vessel charge prior to the initiation of the reaction sufficient to create a suitable monomer/water emulsion in the reaction vessel; and (c) maintaining the agitation for a time sufficient to allow substantially complete conversion of the monomer. This process forms elastomeric, solvet-dispersible, polymeric micropheres.
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patent: 3615972 (1971-10-01), Morehouse, Jr. et al.
patent: 3691140 (1972-09-01), Silver
patent: 4049604 (1977-09-01), Morehouse, Jr. et al.
patent: 4166152 (1979-08-01), Baker et al.
Chernivec Gerald F.
Foelak Morton
Minnesota Mining and Manufacturing Company
Neaveill Darla P.
Sell Donald M.
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