Patent GB-1300632-A (GB)
Title: Highly lactonized copolymers and alternating copolymers using unsaturated ethers
IPC: C08F246/00
Filed: 1970-04-06
Abstract: 1300632 Alternating copolymers of unsaturated ethers; and lactonized copolymers SUMITOMO CHEMICAL CO Ltd and JAPAN EXLAN CO Ltd 6 April 1970 [5 April 1969 11 Dec 1969] 16236/70 Heading C3P Lactonized alternating copolymers of Group (A) monomer comprising at least one monomer of the formula wherein R<SP>1</SP> and R<SP>2</SP> are each H, halogen or a C 1-20  non-polymerizable hydrocarbon or halohydrocarbon radical, (provided at least one of R<SP>1</SP> and R<SP>2</SP> is H), E is -OR<SP>3</SP>, -CH 2 OR<SP>3</SP>, wherein R<SP>3</SP> is a C 1-20  non-polymerizable hydrocarbon or halohydrocarbon radical; and Group (B) monomer comprising at least one conjugated vinyl compound of the formula wherein R<SP>I</SP> and R" are each H, halogen or a C 1-20  non-polymerizable hydrocarbon or halohydrocarbon, (provided at least one of R<SP>I</SP> and R<SP>II</SP> is H), and Q is a nitrile or a group wherein Y is OR<SP>III</SP>, OMe, NR<SP>IV</SP>R<SP>V</SP> or halogen, where R<SP>III</SP>-R<SP>V</SP> are H or C 1-20  organic radicals (including the case where R<SP>IV</SP> and R<SP>V</SP> are bonded to each other at a portion other than N) and Me is an ammonium radical or the monovalent portion of a Group I-III element, are prepared by treating a copolymer with an inorganic or organic acid, or with an alkali to saponify the copolymer followed by treatment with an inorganic or organic acid. Alternating copolymers of the Group (B) monomer and a Group (A) monomer wherein E is -OR<SP>3</SP> or -CH 2 OR 3  or a combination of a Group (A) monomer wherein E is -OR<SP>3</SP> or -CH 2 OR<SP>3</SP> with a Group (A) monomer wherein E is are claimed per se. Examples describe (1) methyl methacrylate/vinyl butyl ether prepared using Et 3 Al 2 Cl 3  as catalyst and lactonized using H 2 SO 4 ; (2) acrylonitrile/vinyl propionate/ isobutyl vinyl ether prepared using Et 3 Al and AlBr 3  as catalyst and lactonized using KOH followed by glacial acetic acid; (3) acrylonitrile/ 2-chloro ethyl vinyl ether prepared using EtBCl 2 ; (4) methyl acrylate/2-chloro ethyl vinyl ether prepared using EtBCl 2 ; (5) methyl acrylate/ isobutyl vinyl ether prepared using EtBCl 2 ; (6) acrylonitrile and/or methyl acrylate/vinyl acetate prepared using EtAlCl 2 , and lactonized using p-toluene sulphonic acid; (7) methylmethacrylate/ vinyl butyl ether prepared using Et 3 Al 2 Cl 3  and lactonized using H 2 SO 4 ; (8) acrylonitrile/vinyl propionate/isobutyl vinyl ether prepared using AlEt 3  and AlBr 3  and lactonized using NaOH followed by glacial acetic acid; (9) α-chloroacrylonitrile/allylchloroacetate prepared using and VOCl 3  and lactonized using HNO 3  containing Al(NO 3 ) 3 ; (10) acrylonitrile/allyl ethyl ether; (11) acrylamide/isopropenyl methyl ether; (12) acrylonitrile/#- chloro - vinyl butyl ether; (13) methyl methacrylate/phenyl vinyl ether; (14) acrylonitrile/N,N - dimethyl acrylamide/2- chloro ethyl allyl ether; (15) methyl acrylate/-α- bromophenyl ether/2-chloro phenyl vinyl ether; (Examples (10)-(15) being prepared using Et 3 Al 2 Cl 3  as catalyst). The lactonized copolymers of Examples 6 and 8 are mixed with dimethylformamide and spun to form filaments.