Melt extrudable cold water-soluble films

Details Melt extrudable cold water-soluble films Melt extrudable cold water-soluble films

1978-12-26

1980-06-03

Lieberman, Allan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

10628726, 260 285R, 260 332R, 260 334R, 260 4237, 264185, 525 58, C08L 2904, C08L 7102

Patent

active

042061016

ABSTRACT:
Films, 0.5-10 mils thick, which are rapidly and completely soluble in cold water, and which are suitable for use as packaging film in automatic packaging equipment, can be prepared by conventional melt extrusion processes when prepared from a novel composition consisting essentially of 5-20 parts by weight of a polyethylene glycol (having an average molecular weight in the range between 325 and 550) in 100 parts by weight of a partially hydrolyzed low molecular weight polyvinyl alcohol.

REFERENCES:
patent: 2949697 (1960-08-01), Robertson
patent: 3157611 (1964-11-01), Lindemann
patent: 3374195 (1968-03-01), Bianco et al.
patent: 3510542 (1970-05-01), Strand
patent: 3882196 (1975-05-01), Hanke
"Carbowax," Union Carbide Chemicals Co., 1959, p. 6.
"Nonionic Surfactants," Edited by Martin J. Schiek, 1967, Marcel Dekker, Inc., New York, p. 1065.
Kirk-Othmer, Encyclopedia of Chemical Technology, Second Edition, vol. 17, 1966, pp. 406 & 651-660.
"The Condensed Chemical Dictionary," Eighth Edition, 1971, pp. 706 & 710.

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