Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1993-02-01
1993-10-12
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526288, 5263031, 5263171, 526328, 526342, 525281, C08F22606, C08F22802, C08F22238, C08F22006, C08F22010, C08F22044, C08F27102
Patent
active
052526909
ABSTRACT:
Polymer compositions which are highly absorbent to aqueous electrolyte solutions are prepared by copolymerization of an ampholytic monomer having the formula of ##STR1## where one and only one of the substituted groups R.sub.1, R.sub.2, R.sub.3 and R.sub.4 must be a vinyl group, the rest can be the same or different and can be hydrogen or a C.sub.1 -C.sub.3 alkyl group; R.sub.5 is a phenyl group; n is .gtoreq.1 and .ltoreq.6; and q is 0 or 1; and an olefin monomer having an ethylenic structure as well as by graft copolymerization of at least an olefin monomer having an ethylenic structure and an ampholytic monomer having the formula disclosed above onto a main polymer selected from the group consisting of polysacchardies and polyolefins. Also disclosed is a process for absorbing large quantity of aqueous electrolyte solution employing the polymer compositions.
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Ahmed Iqbal
Hsieh Henry L.
Cheng Wu C.
Phillips Petroleum Company
Schofer Joseph L.
Shay Lucas K.
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