Method of increasing the size and absorption under load of super

Details Method of increasing the size and absorption under load of super Method of increasing the size and absorption under load of super

1994-09-28

1996-05-07

Jagannathan, Vasu S.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525274, 525301, 525286, 525312, C08F26502

Patent

active

055147542

ABSTRACT:
A method of enhancing the water absorbance of and increasing the particle size of fine water absorbent cross-linked polyacrylic polymer particles includes impregnating the polymer particles with an impregnating monomer solution containing an acrylic monomer, with or without a cross-linking agent for the acrylic monomer. The solution is impregnated into the resin in a weight ratio of cross-linked polyacrylic polymer, dry basis, to impregnating monomer solution in the range of about 1:1 to about 1:10; and subjecting the impregnated polymer to conditions, such as increased temperature, e.g., 100.degree. C.-150.degree. C. to polymerize the impregnated monomer, within the cross-linked polymer particles, to form a cross-linked polyacrylic polymer having enhanced water absorbance and increased particle size.

REFERENCES:
patent: 5180798 (1993-01-01), Nakamura
patent: 5373066 (1994-12-01), Rebre
patent: 5422405 (1995-06-01), Dairoku et al.

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