Superabsorbent polymer composition and method of manufacturing superabsorbent polymer
AssigneeFormosa Plastics Corporation
InventorsZhong-Yi CHEN, Li-Han HUANG, Ping-Chun CHENG
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Abstract
The present invention is related to a superabsorbent polymer composition and a method of manufacturing a superabsorbent polymer. The superabsorbent polymer composition includes a water solution containing carboxylic acid monomers, a hydrolyzed collagen, a crosslinking agent, and a polymerization initiator. The superabsorbent polymer composition includes a specific amount and a specific molecular weight of hydrolyzed collagen, and thus the obtained superabsorbent polymer has high absorbent properties and dryness properties as well as proper biodegradability.
Claims15
A superabsorbent polymer composition, comprising:
- a water solution containing carboxylic acid monomers, wherein a neutralization ratio of the water solution containing the carboxylic acid monomers is bigger than or equal to 45 mole percentage, and a pH value of the water solution containing the carboxylic acid monomers is smaller than or equal to 7.0;
- hydrolyzed collagen;
- a crosslinking agent;
- and
- a polymerization initiator, comprising a thermal decomposition initiator and/or a redox initiator.
A method of manufacturing a superabsorbent polymer, comprising:
- performing a neutralizing step on a water solution of carboxylic acid monomers by using a basic compound, so as to obtain a water solution containing carboxylic acid monomers, wherein a neutralization ratio of the water solution containing the carboxylic acid monomers is bigger than or equal to 45 mole percentage, and a pH value of the water solution containing the carboxylic acid monomers is smaller than or equal to 7.0;
- mixing the water solution containing the carboxylic acid monomers, hydrolyzed collagen, a crosslinking agent and a polymerization initiator to perform a free radical polymerization reaction, wherein the hydrolyzed collagen is made by subjecting fish scales to a hydrolyzing step with a protease;
- and
- performing a drying step after performing the free radical polymerization reaction to obtain the superabsorbent polymer.
Dependencies are inferred from the claim text.