Patent GB-1467771-A (GB)
Title: Copolymers based on n-substituted acrylamides n-substituted methacrylamides and n,n-disubstituted acrylamides and the method of their manufacture
IPC: C08F2/04
Filed: 1975-04-17
Abstract: 1467771 N-Substituted (meth)acrylamide or N,N-disubstituted acrylamide copolymers CESKOSLOVENSKA AKADEMIE VED 17 April 1975 [23 April 1974] 15833/75 Headings C3P and C3C Copolymers consisting of (i) 39À9-99À9 mole per cent of units of formula wherein R 1  is H or CH 3 , R 2  is alkyl or alkoxyalkyl of 1-6 carbon atoms, optionally substituted by up to 3 hydroxyl groups and R 3  is H or R 2  if R 1  is H, R 3  is H if R 1  is CH 3 , part of which may be substituted by a monomer selected from acrylonitrile, methacrylonitrile, N,N-disubstituted methacrylamides, methacrylic esters, methacrylic acid, acrylic acid, (2-diethylamino)ethylmethacrylate and N-vinylpyrolidone, (ii) 0À1- 50 mole per cent of units formed from compounds wherein n is 0-4 wherein x is 2-10 wherein R 4  is H or CH 3 , R 5  is such that R 5 OH is p-nitrophenol, 2,3,5-trichlorophenol, 8-hydroxyquinoline, N-hydroxysuccinimide or N- hydroxyphthalimide, (iii) 0-60 mole per cent of units derived from compounds selected from bis-acrylamides, bismethacrylamides, bis-acrylates, ethyleneglycoldimethacrylate, diethyleneglycoldimethacrylate, 1,4 - cyclohexyldimethyldimethacrylate, 1,6 - hexamethylene dimethacrylate, tetraethyleneglycol dimethacrylate, 1,1,1 - trimethylolethanetrimethacrylate, 1,1,1 - trimethylolpropanetriacrylate, 1,1,1 - trimethylolpropanetrimethacrylate, diisopropyleneglycoldimethacrylate, divinyl sulphone and triacryloylperhydrotriazine may be obtained by free radical polymerization in the presence of an initiator, and in 2-75% by weight solution of the monomers in a precipitant for the polymer said percentage being based on the total weight of the monomers and the precipitant, which precipitant has an interaction parameter of the copolymer/the precipitant higher than 0À6, the polymerization being carried out at a temperature of- 10 to 110 C., or the polymerization may be effected in an aqueous or oil suspension. In the examples: N-(2-hydroxypropyl)methacrylamide is copolymerized with (1) nitrophenyl N - methacryloylglycylglycinate; (3) p - acetaminophenylmethacrylamide; (4) N- methacryloyl # - aminocaproate of N - hydroxysuccinimide; (5) nitrophenyl N-methacryloylglycylglyoylglycinate; (6) N-methacryloyl # - aminocaproate, nitrophenylester/ethyleneglycoldimethacrylate; (10) N- n - propylmethacrylamide / N,N - dimethylmethacrylamide / p - acetaminophenoxyethylacrylate 1,1,1 - trimethylolpropane; (12) p - acetaminophenylmethacrylamide / 1,1,1- trimethylolpropanetrimethacrylate; (13) ester of N - methacryloyl - 10 - perlargonic acid and N-hydroxysuccinimide / tetraethyleneglycoldimethacrylate (14) nitrophenyl N-methacryloylglycinate/1,1,1 - trimethylolpropanetrimethacrylate; (15) ester of 8-hydroxyquinoline and N - methacryloylglycylglycylglycylglycine/triethyleneglycoldimethacrylate; (20) as (4) plus triethyleneglycolmonomethacrylate; (23) triethyleneglycolmonomethacrylate / nitrophenyl N - methacryloylglycylglycylglycinate; (24) 2,3,5 - trichlorophenyl N - methacryloyl - #- aminocaproate / methylenebis - acrylamide; (25) 2,3,5 - trichlorophenyl N - methacryloyl - #- aminocaproate / ethyleneglycoldimethacrylate ; (26) nitrophenyl N-methacryloylglycylglycinate/ ethyleneglycoldimethacrylate; N - ethylmethacrylamide is copolymerized with (7) N- methacryloyl #-aminocaproate of N-hydroxysuccinimide (9) N-butylacrylamide/ester N- methacryloyl - o - pelargonic acid with N- hydroxysuccinimide / tetraethyleneglycoldimethacrylate; (16) N - ethylacrylamide/N - methacryloyl - # - aminobutyric acid ester with N- hydroxyphthalimide / diethyleneglycoldimethacrylate (18) methylene-bis-acrylamide/nitrophenyl N - methacryloylglycylglycylglycylglycylglycinate; (19) as (18) with n-butylmethacrylate; and N,N-diethylacrylamide is copolymerized with (17) acrylonitrile/diethyleneglycol dimethacrylate/2,3,5-trichlorophenyl N- methacryloyl - # - aminocaproate; (21) as (17) replacing acrylonitrile with 2-hydroxyethylmethacrylate; (22) as (17) replacing acrylonitrile with N,N-dimethylmethacrylamide. In Example 8, N,N-diethylacrylamide is polymerized with N - methacryloylglycylglycylglycine which is converted to the nitrophenyl ester by reaction with nitrophenol. In Example 6 and 10, macroporous polymers are produced.