Direct application of surface treatment to absorbent polymers

Details Direct application of surface treatment to absorbent polymers Direct application of surface treatment to absorbent polymers

1992-05-29

1998-06-16

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

528494, 528415, 528496, 52631843, C08F 614

Patent

active

057672130

ABSTRACT:
The subject invention pertains to a process for preparing a fluid absorbent polymer wherein an ethylenically unsaturated monomer mixture is dispersed as droplets in an inert organic phase containing a hydrophobic suspending agent, such droplets being polymerized to form polymer particles having a hydrophobic surface, the improvement comprising blending the polymer particles with a hydrophilic material in the absence of an organic solvent, such as to render the hydrophobic surface hydrophilic.

REFERENCES:
patent: 4286082 (1981-08-01), Tsubakimoto et al.
patent: 4459396 (1984-07-01), Yamasaki et al.
patent: 4708997 (1987-11-01), Stanley, Jr. et al.
patent: 4898913 (1990-02-01), Ziemelis et al.
patent: 4997911 (1991-03-01), Yasui et al.
U.S. application No. 07/671616, Stanley, Jr. et al., filed Mar. 19, 1991.

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