| 摘要 |
1,271,224. Thiophosphoryl polysulphide vulcanizing agents. IMPERIAL CHEMICAL INDUSTRIES Ltd. 8 July, 1969 [19 July, 1968], No. 34539/68. Heading C3E. Bis-(dihydrocarbyl thiophosphoryl) tri- and tetra-sulphides are used as vulcanizing agents for rubbers. They can be used on their own or used with elemental sulphur, thiazoles, sulphenamides, dithiocarbamates, or thiurams. |
