Hydrophilic polymer based on acrylic acid and alkali metal acryl

Details Hydrophilic polymer based on acrylic acid and alkali metal acryl Hydrophilic polymer based on acrylic acid and alkali metal acryl

1988-04-01

1990-09-25

Rosenbaum, C. Fred

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

604372, A61F 1316

Patent

active

049590618

ABSTRACT:
This polymer is based on acrylic acid and alkali metal acrylate; it has a degree of absorbency in respect of a physiological solution of 50 to 70 g/g, containing only 20 to 45% of acrylic acid, in molar proportions, and 80 to 55% of potassium acrylate. Its method of preparation is an oil-water suspension polymerization process which is carried out by introducing slowly, while being agitated, into the oil phase containing a protective colloid, a solution obtained starting from an aqueous solution of one or more polymerization initiators and an aqueous solution of the selected monomers, then eliminating any solvent until achieving a degree of dryness of 80.+-.10% by weight, thus isolating the desired copolymer. This polymer is suitable for use as an absorbent.

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patent: 4748076 (1988-05-01), Saotome
Chemical Abstracts. vol. 82, No. 10, 19 May 1975, p. 20, Columbus, Ohio.

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