Product/Service

WATER LOCK Superabsorbent Polymers

Source: Grain Processing Corporation

WATER LOCK Superabsorbent Polymers
WATER LOCK superabsorbent polymers are manufactured by hydrolyzing a starch 2-propenenitrile graft copolymer or the starch-free homopolymer to the corresponding propenamide/propenoic acid salt copolymer.
WATER LOCK is the registered trademark for a family of superabsorbent polymers produced by Grain Processing Corporation of Muscatine, IA.

By definition, a superabsorbent polymer must absorb a minimum of 20 times its own weight in water. WATER LOCK superabsorbent polymers far exceed that value. Moreover, the polymer must retain its original identity and have sufficient physical integrity to resist flow and fusion with neighboring particles, and to swell to equilibrium volume and not dissolve.

WATER LOCK superabsorbent polymers fall into two classifications:

    1. Starch Graft Copolymers: Starch Graft Poly (2-propenamide-co-2-propenoic acid) available as the sodium or potassium salt.

    2. Homopolymer: Poly (2-propenamide-co-2-propenoic acid, sodium salt)

The copolymer and homopolymer are off-white to tan, free-flowing powders, which absorb or immobilize large volumes of aqueous solutions at neutral or alkaline pH, including body fluids.

WATER LOCK superabsorbent polymers are manufactured by hydrolyzing a starch 2-propenenitrile graft copolymer or the starch-free homopolymer to the corresponding propenamide/propenoic acid salt copolymer. Variations in polymerization and hydrolysis chemistry and other treatments produce products with different characteristics for different applications.

WATER LOCK superabsorbent polymers are available in several forms.

Basic WATER LOCK Product Families

Code

Differences from A-100 Type

A-100 series

Base starch graft copolymer

A-200 series

Higher absorbency than A-100 series, but similar product

Specialty WATER LOCK Products

B-204 series

Potassium salt

C-200

Clear gel

D-223 series

Fast uptake, lighter color

G-400 series

High uptake, no starch


Grain Processing Corporation, 1600 Oregon Street, Muscatine, IA 52761. Tel: 563-264-4265; Fax: 563-264-4289.