公开(公告)号：US3505266A

公开(公告)日：1970-04-07

申请号：US3505266D

申请日：1967-05-08

Applicant: BAYER AG

Inventor： SULING CARLHANS ,  KRAMER DIETER ,  UNBEHEND MANFRED

IPC: C08F20/44 ,  D01F6/18 ,  C08F1/76 ,  C08F3/76

CPC classification number: D01F6/18 ,  C08F2/36 ,  C08F20/44

Abstract: A solution of an acrylonitrile polymer is produced by polymerizing acrylonitrile in an organic solvent for polyacrylonitrile, at a temperature of from + 10 DEG to - 68 DEG C. in the presence of 0.1 m.mol. to 0.1 mol., per mol. of monomer, of an alkali metal salt of an aliphatic or cycloaliphatic sulphonamide of the formula wherein M represents Li, Na, K, Rb or Cs, R1 represents an alkyl or cycloalkyl radical and R2 represents an alkyl radical. Specified salts are those of N-methyl, N-isopropyl or N-isobutyl methane sulphonamide, N-methyl n-butane sulphonamide, N - n - propyl ethane sulphonamide, N-methyl cyclohexane sulphonamide and long-chain aliphatic sulphonamides. Suitable solvents are dimethyl formamide and dimethyl sulphoxide. In examples, dimethyl formamide solutions of polyacrylonitrile are produced using potassium N-methyl or N-isobutyl methane sulphonamide or lithium N-isobutyl or N-isopropyl sulphonamide. The catalyst is deactivated with HCl or toluene sulphonic acid.

公开(公告)号：US3644265A

公开(公告)日：1972-02-22

申请号：US3644265D

申请日：1968-12-06

Applicant: BAYER AG

Inventor： SULING CARLHANS ,  LOGEMANN HELNO ,  KRAMER DIETER ,  RACHWALSKY HEINZ ,  MARZOLPH HERBERT

IPC: C08K5/42 ,  C08F45/60

CPC classification number: C08K5/42 ,  C08L33/20 ,  C08L27/08

Abstract: This invention relates to a stabilized solution of a copolymer from acrylonitrile and vinylidene chloride in an organic solvent, the chlorine content of the copolymer is in the range from 20 to 60 percent by weight based on the polymer. The solution of the copolymer contains a salt of a mercapto sulphonic acid with a guanidine as stabilizing agent, said salt is present in the solvent in the range of from 0.001 to 5 percent by weight based on the polymer.

公开(公告)号：US3525725A

公开(公告)日：1970-08-25

申请号：US3525725D

申请日：1967-07-06

Applicant: BAYER AG

Inventor： KRAMER DIETER ,  SULING CARLHANS

IPC: C08F20/44 ,  C08F3/76 ,  C08F15/22 ,  C08F15/36

CPC classification number: C08F20/44 ,  C08F2/36

Abstract: 1,134,384. Quaternary ammonium salts of sulphonamides. FARBENFABRIKEN BAYER A.G. 21 June, 1967 [11 July, 1966], No. 28635/67. Heading C2C. [Also in Division C3] Compounds of the formula where the various R radicals may be the same or different and are monovalent alphatic, aromatic, cycloaliphatic or araliphatic radicals, are prepared by reacting an appropriate quaternary ammonium halide with an alkali metal (e.g. sodium) derivative of an appropriate sulphonamide in an anhydrous solvent, e.g. ethanol. Specified compounds are the tetra methyl ammonium salts of N-methylmethane- and N - methylbenzene - sulphonamide, the tetramethyl - and tetraethyl - ammonium salts of N-methyl cyclohexane-sulphonamide, and the phenyl benzyl dimethyl ammonium salts of N-methylbenzene-, N-methylcyclohexane- and N-ethyl cyclohexane-sulphonamido.

公开(公告)号：US3590102A

公开(公告)日：1971-06-29

申请号：US3590102D

申请日：1968-03-01

Applicant: BAYER AG

Inventor： SULING CARLHANS ,  SCHNALKE KARL-ERWIN ,  KRAMER DIETER

IPC: C08F271/00 ,  C08F15/22

CPC classification number: C08F271/00 ,  C08F220/44

Abstract: ACRYLONITRILE GRAFT POLYMERS CONTAINING AS A GRAFT BASIS A POLYVINYLAMIDE HAVING THE RECURRING STRUCTURAL UNIT

-(CH2-CH(-NH-CO-R))N-

WHEREIN R REPRESENTS A LOWER ALKYL RADICAL AND N IS A WHOLE NUMBER FROM 3 TO 300, AND GRAFTED THEREON A VINYL MONOMER COMPOSITION, CONSISTING OF AT LEAST 85% BY WEIGHT OF ACRYLONITRILE AND OPTIONALLY AN ADDITIONAL COPOLYMERISABLE VINYL MONOMER.