Low-dusting pulverulent hydrophilic polymers

Details Low-dusting pulverulent hydrophilic polymers Low-dusting pulverulent hydrophilic polymers

1995-04-19

1997-10-28

Smith, Jeffrey T.

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...

524306, 524307, 524310, 524311, C08K 524

Patent

active

056818785

ABSTRACT:
The present invention relates to pulverulent water-swellable hydrophilic (co)polymers which comprise, for reducing dusting, auxiliaries from the series consisting of silicones and/or other auxiliaries, the latter in a total amount of less than 1% by weight, for example polyglycols or polyglycol ethers, the vapor pressure of the individual auxiliaries being not more than 0.1 mbar at 20.degree. C. and their melting point being not more than 100.degree. C., processes for their preparation and their use for absorption of water and aqueous solutions.

REFERENCES:
patent: 4080358 (1978-03-01), Krumel et al.
patent: 4732968 (1988-03-01), Obayashi et al.
patent: 4748215 (1988-05-01), Lindner et al.
patent: 5087656 (1992-02-01), Yoshinaga et al.
patent: 5096944 (1992-03-01), Tomiju et al.

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