发明名称 |
COPOLYMERS OF TETRAFLUOROETHYLENE AND PERFLUOROALKYLVINYL ETHERS FOR HEAT-RESISTANT PRODUCTS |
摘要 |
FIELD: polymer materials. SUBSTANCE: new copolymers of tetrafluoroethylene and perfluoroalkylvinyl ethers with general formula I (see description) wherein n= 42-47 mol %, m=25-55 mol %, ρ=1-4 mol %, and a=1-7 mol % with molecular weight 100000-200000, intended for heat-resistant products, represent essentially noncrystallizable compounds imparting to vulcanizates obtained from them good physico-mechanical characteristics and high heat endurance in stressed state in combination with high stress index at 100% elongation. Vulcanizates based on proposed copolymers can be used as sealing materials fit to be operated in corrosive media at high temperatures in various areas. EFFECT: improved working characteristics. 1 tbl, 4 ex
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申请公布号 |
RU2137781(C1) |
申请公布日期 |
1999.09.20 |
申请号 |
RU19980115210 |
申请日期 |
1998.08.05 |
申请人 |
SLEDOVATEL'SKIJ INSTITUT SINTETICHESKOGO KAUCHUKA;G UNITARNOE PREDPRIJATIE N IS;SLEDOVATEL SKIJ INST SINT KAUC |
发明人 |
VOLKOVA M.A.;GUBANOV V.A.;KORMER V.A.;KUZNETSOV A.L.;MANUJLOVA E.A.;KHRISTIANCHIK B.A. |
分类号 |
C08F214/18;C08F214/26;C09K3/10;(IPC1-7):C08F214/26 |
主分类号 |
C08F214/18 |
代理机构 |
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地址 |
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