Coating processes – Foraminous product produced – Microporous coating
Patent
1988-05-02
1989-08-15
Lawrence, Evan
Coating processes
Foraminous product produced
Microporous coating
427340, 427342, B05D 302, B05D 310, B05D 500
Patent
active
048573639
ABSTRACT:
A process for preparing a semipermeable composite membrane comprising a microporous substrate and an ultra-thin membrane covering the substrate, wherein the ultra-thin membrane comprises a crosslinked piperazine polyamide as a main component and contains a constituent component represented by the following general formula (I): ##STR1## wherein R stands for --H or --CH.sub.3 and n is an integer of from 0 to 3.
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J. E. Cadotte et al., "Research on In Situ-Formed Condensation Polymer for Reverse Osmosis Membranes," pp. 10-17, PB-288387, MRI Report, Mar. 1978.
J. E. Cadotte et al., "Continued Evaluation of In Situ-Formed Condensation Polymers for Reverse Osmosis Membranes," Midwest Research Institute (PB-253193), Apr. 1976.
J. E. Cadotte et al., "Advanced Poly (Piperazineamide) Reverse Osmosis Membranes," FilmTec Corp. (PB-80-127574), 1979.
Fujimaki Hideo
Kurihara Masaru
Sasaki Tatsuo
Uemura Tadahiro
Lawrence Evan
Miller Austin R.
Toray Industries Inc.
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