A fluid conductive polymer mixture for use in the preparation of coatings, films and fibres is based on a polyaniline in base form (preferably emeraldine-base form). This is doped with a sulfonic acid having in addition to at least one sulfonic acid group a second hydrogen-bonding functional group and is dispersed in an acid solvent having a pKa less than 4.5 but substantially higher (more positive) than that of the sulfonic acid. The functional sulfonic acid appears to act as a solvating agent, as well as dopant, and allows the formation of high-solids mixtures in the acid solvents (up to around 15 % w/v compared with a maximum of about 10 % in conventional NMP-based mixtures) from which solvent can be extracted with a competing solvent (e.g. in a wet-spinning process); cold- (and hot-) drawable films and fibres can be obtained. Preferred sulfonic acid is 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPSA) or its oligomer and preferred acid solvent dichloroacetic acid. The competing solvent may be acetone, methyl isobutyl ketone or butyl acetate.
申请公布号
WO9924991(A1)
申请公布日期
1999.05.20
申请号
WO1998GB03241
申请日期
1998.10.30
申请人
BICC PUBLIC LIMITED COMPANY;ADAMS, PHILLIP, NORMAN;MONKMAN, ANDREW, PAUL;POMFRET, STEPHEN, JOHN
发明人
ADAMS, PHILLIP, NORMAN;MONKMAN, ANDREW, PAUL;POMFRET, STEPHEN, JOHN