Cotelomer compounds

US4681686A · kind A · utility

Inventors

• Norman Richardson · Manchester, GB
• Brian Holt · Stretford, GB
• Barry Cook

Key dates

• Filing date: Jul 10, 1985
• Grant date: Jul 21, 1987
• Expiry date: Jul 10, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D11/246
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

New cotelomer compounds having the formula I ##STR1## and salts thereof wherein A is a random polymeric residue comprising at least one unit of formula II ##STR2## and at least one unit of formula III, different from a unit of formula II, ##STR3## and B is hydrogen or a residue A; wherein m and n are integers such that the sum of m+n is an integer of from 3 to 100, the ratio of n:m being from 99 to 1:1 to 99, provided that the resulting telomers are water-soluble and wherein m and/or n in a residue A may be the same as or different from m and/or n in a residue B; R is hydrogen, methyl or ethyl; PA0 R.sub.1 is a residue -OX, wherein X is hydrogen, an alkali- or alkaline earth metal, ammonium or an amine residue; PA0 R.sub.2 is hydrogen, methyl or a residue --CO.sub.2 R.sub.5, wherein R.sub.5 is hydrogen or a straight- or branched chain alkyl residue having 1 to 8 carbon atoms; PA0 R.sub.3 is hydrogen, a straight- or branched chain alkyl residue having 1 to 4 carbon atoms, hydroxymethyl or a residue --CO.sub.2 R.sub.6, wherein R.sub.6 is hydrogen, a residue of formula ##STR4## a residue of formula --[CH.sub.2 --CH(R.sub.9)O].sub.z H, in which R.sub.9 is hydrogen, methyl or phenyl and…