Patent · US Expired

Membranes for liquid separations

US4591440A · kind A · utility

15Cited by
1References
7Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 1, 1984
Grant dateMay 27, 1986
Priority date
Expiry dateOct 1, 2004

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08F138/00
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

Provided is a membrane for liquid separation which comprises mainly poly(substituted acetylene) having a repeating unit represented by the following formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group, and R.sub.2 represents an alkyl group having from 1 to 3 carbon atoms.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.