US 12,391,782 B2
Fluorinated copolymer composition and crosslinked rubber article
Tsuyoshi Kawai, Tokyo (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on Mar. 18, 2022, as Appl. No. 17/655,416.
Application 17/655,416 is a continuation of application No. PCT/JP2020/039268, filed on Oct. 19, 2020.
Claims priority of application No. 2019-192839 (JP), filed on Oct. 23, 2019.
Prior Publication US 2022/0204675 A1, Jun. 30, 2022
Int. Cl. C08F 259/08 (2006.01); C08K 5/14 (2006.01); C08K 5/50 (2006.01)
CPC C08F 259/08 (2013.01) [C08K 5/14 (2013.01); C08K 5/50 (2013.01); C08F 2810/20 (2013.01)] 21 Claims
 
1. A fluorinated copolymer composition, comprising:
a fluorinated copolymer comprising substantially no hydrogen atoms;
an organic peroxide;
a compound having at least two polymerizable unsaturated bonds; and
a phosphorus compound having a melting point of 60° C. or lower,
wherein the compound having at least two polymerizable unsaturated bonds is a compound of formula (6), (CR61R62═CR63)2R64, where R61, R62 and R63 are each independently a hydrogen atom, a fluorine atom, a C1-5 alkyl group or a C1-5 fluoroalkyl group, R64 is a bivalent C1-18 fluorohydrocarbon group or a group having an etheric oxygen atom at a terminal or in a carbon-carbon bond of the fluorohydrocarbon group, and two R61, two R62 and two R63 may be the same or different from each other, respectively.