Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1990-05-09
1992-09-15
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
5763185, 576333, 524833, 524916, C08F22026
Patent
active
051479567
ABSTRACT:
A water soluble, substantially linear, polymer is made by copolymerization of a water soluble blend of monoethylenically unsaturated monomers comprising carboxylic acid monomers such as acrylic acid and a hydroxylic monomer of the formula CHR.sup.1 .dbd.CR.sup.2 --Y--M.sub.a --H where R.sup.1 is hydrogen or carboxy, R.sup.2 is hydrogen, carboxy or methyl, Y is O, CH.sub.2 O or COO, M is alkyleneoxy and a is at least 5. This polymer can be cross linked, generally after being shaped by extrusion or other shaping of an aqueous solution of the polymer, to form cross linkages between the carboxyl and hydroxyl groups. The shaped elements can have water absorbency and can be in the form of, for instance, fibers or films.
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Allied Colloids Ltd.
Nagumo M.
Schofer Joseph L.
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