Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1975-08-20
1978-02-28
Lowe, James B.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
260 296HN, 260 296TA, 260 334R, 260 793M, 264144, 264216, 526304, 526317, C08F22034, B29B 102
Patent
active
040769283
ABSTRACT:
Water swellable absorbent articles, made from copolymers having a copolymerized crosslinker, together with methods for their preparation, and a composition containing a copolymerized crosslinker useful to make said articles are disclosed. The copolymers comprise 25-98% by weight of an alkali metal salt of an olefinically unsaturated monosulfonic or monocarboxylic acid, about 2-50% by weight of an olefinically unsaturated monocarboxylic acid and about 0.1-5.0% by weight of an N-substituted acrylamide or methacrylamide. The articles are crosslinked by heating and/or removing substantially all of the water from the precursor composition.
The crosslinked compositions, in the form of a film, can be disintegrated to form flakes, strips or powders.
The absorbent articles are useful as surgical sponges, diapers, tampons, meat trays, bath mats and the like.
REFERENCES:
patent: 2701391 (1955-02-01), Yost et al.
patent: 3808305 (1974-04-01), Gregor
patent: 3957710 (1976-05-01), Rohmann et al.
Colley Benjamin G.
Lowe James B.
The Dow Chemical Company
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