| 摘要 |
1,160,104. Curable liquid polymer compositions. THIOKOL CHEMICAL CORP. 29 Sept., 1967 [13 Dec., 1966], No. 44533/67. Headings C3P and C3R. Curable compositions comprise (A) a liquid polymer having a plurality of SH groups in the molecule (B) an oxidizing curing agent and (C) as a co-curing agent (i) 2-mercaptothiazoline or a metal salt thereof, (ii) 2-mercaptobenzthiazole or a metal salt thereof, (iii) benzothiazolyl disulphide, (iv) 1, 3-bis-(2-benzothiazolylmercaptomethyl) urea, or (v) a benzothiazole - 2 - sulphenamide of formula where R and R<SP>1</SP> are hydrogen atoms or alkyl or cyloalkyl groups or together with the nitrogen atom are a azahydrocarbon, azathiahydrocarbon, azaoxahydrocarbon or azaoxathiahydrocarbon group. In examples the polymers are polysulphides having terminal-SH groups, a polypropylene glycol polymer with terminal-SH groups and a butadiene/acrylonitrile copolymer with terminal-SH groups; the oxidizing curing agents are zinc peroxide, barium manganate, lithium peroxide, potassium iodate, ammonium dichromate, calcium peroxide manganese dioxide and tellurium dioxide; the co-curing agents are 2-mercaptothiazoline, 1, 3- bis (2-benzothiazolylmercaptomethyl) urea, 2- mercaptobenzothiazole, the zinc salt of 2-mercaptobenzothiazole, benzothiazolyl disulphide N-oxydiethylenebenzothiazole - 2 - sulphenamide, N - cyclohexylbenzothiazole - 2 - sulphenamide N,N - diisopropylbenzothiazole - 2 - sulphenamide; some of the polysulphide compositions also contain calcium carbonate, titanium dioxide and silica. |
