Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ
Patent
1974-10-29
1977-06-14
Ziegler, J.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
106178, 106187, 106188, 106189, 106190, 106195, 106196, 210500M, 264342R, 427246, 427339, B29D 2704, B29H 720, C08L 112
Patent
active
040297268
ABSTRACT:
Polymer-liquid composite materials, particularly of cellulosic polymers such as cellulose nitrate, are described, which materials are strong, transparent, ultramicroporous materials characterized by a diffusion-supporting liquid phase of about 70% or more liquid within an interpenetrating, form-retentive, solid polymer phase. The materials are prepared by precipitation from a hydrogen-bonding solvent solution by the use of a miscible nonsolvent at temperatures generally below about 45.degree. C.
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Riley, R. L. et al. "Improved Reverse Osmosis Membranes," U.S. Department of Interior, Office of Saline Water Research and Development Progress Report No. 729, Dec. 1971. TD433 U56 No. 729 pp. 1-14, 101-112.
Crowley Richard P.
Moleculon Research Corporation
Ziegler J.
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