| abstract |
Vinyl-functional PIB (polyisobutylene) macromers are obtd. by reacting mainly monofunctional, acid-terminated PIB oligomers of formula H3C-CO-CH2-(CH2-C(CH3)2)n-CH2-COOH (I) with epoxy-functional vinyl monomers, pref. glycidyl (meth) acrylate; n = 2-20. Also claimed are graft copolymers with PIB branches, obtd. by copolymerisation of 100 pts. wt. macromer as above with 5-5000 (pref. 10-1000) pts. wt. vinyl monomer(s), 0-100 (pref. 1-20)% of which contain a 12-22C alkyl gp. |