Highly water-absorptive powdery polymer composition

Details Highly water-absorptive powdery polymer composition Highly water-absorptive powdery polymer composition

1990-03-09

1992-02-11

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524492, 523220, C08K 334, C08K 726

Patent

active

050876562

ABSTRACT:
A highly water-absorptive powdery polymer composition comprising a mixture of a highly water-absorptive powdery polymer and a porous powder of a high-purity silicon dioxide, said powder having (a) a mean particle size of 0.1 to 30 .mu.m as measured by the Coulter counter method and (b) a specific surface area of 500 m.sup.2 /g or more as measured by the BET (Brunauer-Emmett-Teller) method.

REFERENCES:
patent: 2882254 (1959-04-01), Kloepfer
patent: 4080358 (1978-03-01), Krumel
patent: 4481328 (1984-11-01), Harreus
patent: 4663383 (1987-05-01), Lowe
patent: 4707504 (1987-11-01), Walkowiak et al.
patent: 4732968 (1988-03-01), Obdyashi

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