Water absorbing agent

Details Water absorbing agent Water absorbing agent

1985-06-26

1988-03-29

Phillips, Delbert R.

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

Synthetic resins

From carbohydrate or derivative as a reactant

527311, 527312, 527313, 527314, C08J 324, B01J 2026

Patent

active

047344784

ABSTRACT:
The invention provides [I] a water-absorbing agent composed of a water-absorbing resin powder having the molecular chains near its surface being crosslinked, said powder being obtained by mixing 100 parts by weight of a powder of a carboxyl-containing water-absorbing resin selected from the group consisting of a hydrolyzate of a starch-acrylonitrile graft polymer, a partially neutralized product of a starch-acrylic acid graft polymer, a saponification product of a vinyl acetate-acrylic ester copolymer, a hydrolyzate of an acrylonitrile copolymer, a crosslinked product of a hydrolyzate of an acrylonitrile copolymer, a hydrolyzate of an acrylamide copolymer, a crosslinked product of a hydrolyzate of an acrylamide copolymer, a partially neutralized product of polyacrylic acid, and a crosslinked product of partially neutralized polyacrylic acid with 0.001 to 10 parts by weight of a polyhydric alcohol, 0.01 to 8 parts by weight of a hydrophilic organic solvent and 0 to 8 parts by weight of water, and heating the mixture at a temperature of at least 90.degree. C. to react the water-absorbing resin powder with the polyhydric alcohol; [II] a water-absorbing agent composed of a mixture of the water-absorbing agent [I] with finely divided silica; [III] a water-absorbing agent obtained by pulverizing and granulating a mixture of the water-absorbing agent [I] with an aqueous liquid; and [IV] a water-absorbing agent composed of a mixture of the water-absorbing agent [III] with finely divided silica.

REFERENCES:
patent: 3661815 (1972-05-01), Smith
patent: 4076663 (1978-02-01), Masuda et al.
patent: 4093776 (1978-06-01), Aoki et al.
patent: 4282121 (1981-08-01), Goodrich
patent: 4286082 (1981-08-01), Tsubakimoto et al.
patent: 4412036 (1983-10-01), Pedersen et al.

Affiliated with

Also associated with

Rating

Water absorbing agent does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Water absorbing agent, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water absorbing agent will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1089737