RUBBER MIXTURE ON THE BASE OF FLUORINE-CONTAINING ELASTOMER Russian patent published in 1997 - IPC

FIELD: rubber industry. SUBSTANCE: vulcanizing agent contains initiator of vulcanization, acceptor of free radicals and activating agent. Copper or its compound being chosen of copper oxide, salt of copper or complex compound of copper or their mixture is used as mentioned above initiator. Organic or organoelemental compound which contains at least two unconjugated double bonds in its molecule are used as said acceptor, urea or ammonium salts are used as mentioned above activating agent. Proposed mixture contains (mass %): initiator 6-50, acceptor of free radicals 14-80, activating agent 2-40. Rubber mixture contains (mass parts): caoutchouc 100, vulcanizing agent 1.4-5.5, filler 10-60, oxide of metal 1-20. Desired rubber mixture is prepared on rolls or in mixer. Vulcanization is carried out within 5-60 min at 150-200 C. Relative strength of desired rubber is 6.2-19.4 MPa, its relative elongation is 126-152 %. EFFECT: improves quality of desired product. 4 tbl