Process for preparation of water absorptive composite

Details Process for preparation of water absorptive composite Process for preparation of water absorptive composite

1988-11-04

1990-08-14

Lusignan, Michael

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428260, 428264, 428265, 428290, 428913, 427342, 4273899, 427391, 427392, B32B 700, D04B 100

Patent

active

049486594

ABSTRACT:
There is provided a process for preparing a water absorptive composite, which comprises the combination of the steps of (A) applying an aqueous solution containing (a) a polymerizable monomer comprising as a main component acrylic acid, of which 20% or more of the carboxyl groups have been neutralized to its alkali metal salt or ammonium salt, (b) a crosslinking agent, (c) a polyoxyethylene acyl ester with HLB of 7 or more and (d) an oxidative radical polymerization initiator to a prefabricated fibrous substrate and (B) polymerizing the polymerizable monomer applied to the fibrous substrate with addition of a reducing agent to form a composite of a polymer derived from the polymerizable monomer and the fibrous substrate.

REFERENCES:
patent: 4295987 (1981-10-01), Parks
patent: 4455342 (1984-06-01), Fink et al.
patent: 4605401 (1986-08-01), Chmelir et al.
patent: 4748076 (1988-05-01), Saotome

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