Process for production of highly water-absorbent resin

Details Process for production of highly water-absorbent resin Process for production of highly water-absorbent resin

Filed on

1988-06-27

Date issued

1989-11-14

Examiner

Henderson, Christopher

Patent Class

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

SubClass

Synthetic resins

SubSubClass

Polymers from only ethylenic monomers or processes of...

Other Related Categories

526 81, 526207, C08F 232

Type

Patent

Status

active

Patent number

048808865

Description

ABSTRACT:
In a process for producing a highly water-absorbent resin comprising subjecting a mixture of (meth)acrylic acid with a water-soluble salt thereof as a monomer to reversed phase suspension polymerization in a hydrophobic solvent in the presence of a dispersing agent, improvements that at least a portion of said monomer is fed sequentially with the progress of polymerization reaction and at least a portion of said dispersing agent is fed sequentially with the progress of polymerization. The resulting resin is useful as a highly water-soluble resin component of sanitary products, or as a humectant/desiccant, a rheology modifier and so on.

REFERENCES:
patent: 4654039 (1987-03-01), Brandt

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