Curable fluoroelastomeric compositions
US6265494A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1998 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | May 19, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Curable fluoroelastomeric compositions comprising: PA1 A) 100 phr (parts) of fluoroelastomeric copolymers based on vinylidenefluoride (VDF) copolymers and at least a partially or completely fluorinated comonomer having an ethylene unsaturation; PA1 B) 0.5 to 10 phr of a curing agent having the general formula EQU [(R.sub.3 --Si).sub.m --(C.sub.y M.sub.2y --O--C.sub.z M.sub.2z).sub.p --(C.sub.t M.sub.2t-1).sub.n --P.sub.q --O--].sub.2 Q PA2 wherein m, q are independently 0 or 1; p=0, 1, 2 or 3; n=0, 1 or 2; y, z are each from 1 to 20; t is from 3 to 10; R is selected from the group consisting of a C.sub.x M.sub.2x+1 linear or branched aliphatic chain containing hydrogen and/or fluorine (M=H and/or F), a C.sub.x M.sub.2x-1 cycloaliphatic structure containing hydrogen and/or fluorine, a C.sub.x M.sub.x-1 aromatic structure containing hydrogen or fluorine (wherein x in the formulas is an integer from 1 to 20) and P.sub.a wherein P is a bivalent (per)fluoropolyether linking group and a is an integer from 0 to 1; Q is selected from the group consisting of an aromatic or an aliphatic structure, an aromatic structure containing nitrogen or oxygen and a structure having the following formul…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.