US 11,851,556 B2
Fluoroelastomer composition
Stefano Bossolo, Parabiago (IT); Marco Avataneo, Milan (IT); Stefano Millefanti, Tradate (IT); and Michael J. Cox, Mesa, AZ (US)
Assigned to SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
Filed by SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
Filed on Aug. 19, 2021, as Appl. No. 17/406,685.
Application 17/406,685 is a continuation of application No. 16/499,864, previously published as PCT/EP2018/057457, filed on Mar. 23, 2018.
Claims priority of application No. 17164042 (EP), filed on Mar. 31, 2017.
Prior Publication US 2021/0380793 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 27/18 (2006.01); C08K 5/03 (2006.01); C08K 5/136 (2006.01); C08K 5/17 (2006.01); C08K 5/28 (2006.01); C08K 5/205 (2006.01); C08K 5/21 (2006.01)
CPC C08L 27/18 (2013.01) [C08K 5/136 (2013.01); C08K 5/28 (2013.01); C08K 5/03 (2013.01); C08K 5/17 (2013.01); C08K 5/205 (2013.01); C08K 5/21 (2013.01)] 18 Claims
 
1. A fluoroelastomer composition (C), said composition (C) comprising:
at least one fluoroelastomer (A), wherein fluoroelastomer (A) comprises from 0.1 to 10.0% moles, with respect to total moles of recurring units of fluoroelastomer (A), of recurring units derived from a cure-site containing monomers having at least a carbo-group [monomer (CS-C)] selected from the group consisting of carboxylic groups —COOH; carboxylate groups —COOXa, with Xa being a monovalent metal or an ammonium group; carboxamide group —CONH2; and alkoxycarboxylic group —COO—RH, with RH being a (fluoro)(hydro)carbon group;
at least one curing agent [agent (A)];
at least one bromine-containing marker [marker (B)], selected from the group consisting of compounds comprising at least one Br atom and at least one group selected from:
(B-1) aromatic ortho-diamine groups;
(B-2) aromatic ortho amino-(thio)phenolic groups;
(B-3) amidoxime/amidine/amidrazone groups of formula:

OG Complex Work Unit Chemistry
wherein RN1 is —OH or —H, and RN2 is H or NH2;
(B-4) imidoylamidine groups of formula:

OG Complex Work Unit Chemistry
(B-5) azide groups of formula: —(SO2)xn—N3, whereas xn is 0 or 1; and
(B-6) carbazide groups of formula -JN-C(O)—NH—NH2, wherein JN is either a bond, an ester oxygen —O— group, or an amine —NH— group.