Patent · US Active

Low viscosity fluoroelastomers

US9458272B2 · kind B2 · utility

1Cited by

20References

14Claims

0Family size

Assignee

SOLVAY SPECIALTY POLYMERS ITALY S.P.A. · IT

Inventors

Marco Apostolo · Novara, IT
Giovanni Comino · Monza, IT
Marco Cristini · Urgnano, IT

Key dates

Filing date	Dec 13, 2011
Grant date	Oct 4, 2016
Priority date	—
Expiry date	Dec 13, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F214/222
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention pertains to a low viscosity curable (per)fluoroelastomer [fluoroelastomer (A)] having a number-averaged molecular weight of 3 000 to 45 000, said (per)fluoroelastomer comprising at least 1% moles, with respect to the total moles of recurring units, of recurring units derived from at least one (per)fluoromethoxyalkylvinylether of formula (I):CFX′═CX″OCF2ORf formula (I)wherein X′ and X″, equal to or different from each other, are independently H or F; and Rf is selected from the group consisting of C1-C6 (per)fluoroalkyls, linear or branched; C5-C6 cyclic (per)fluoroalkyls; and C2-C6 (per)fluorooxyalkyls, linear or branched, comprising from 1 to 3 catenary ethereal oxygen atoms [monomer (M)].

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.