Vulcanizable compositions based on modified acrylic rubbers
AssigneeEnichem Elastomeri S.r.l.
InventorsJoseph Da Lio, Laura Lanzavecchia, Giuseppe Savini
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Abstract
Elastomeric copolymer obtained by the polymerization of: a) a monomer selected from those having general formula CH.sub.2 .dbd.CR'--CO--OR, wherein R is a monofunctional radical selected from linear or branched C1-C6 alkyl radicals; b) (meth)acrylonitrile; c) a third monomer selected from: c1) a chlorinated vinyl ester; c2) a mixture of an unsaturated carboxylic acid and an aliphatic or aromatic diepoxy compound; c3) a mixture consisting of a chlorinated vinyl ester and an unsaturated carboxylic acid.
Claims7
Vulcanizable elastomeric composition including:
- an elastomeric copolymer obtained by copolymerizing:
- a) a monomer selected from the formula CH.sub.2 .dbd.CR'--CO--OR, wherein R is a monofunctional radical selected from linear or branched C1-C6 alkyl radicals and C1-C16 alkoxyalkyl radicals, and R' is selected from --H and --CH.sub.3 ;
- (meth)acrylonitrile,
- c1) a chlorinated vinyl ester,
- a vulcanizable agent selected from the group consisting of:
- 1) a mixture of:
- a) a salt of a saturated or unsaturated fatty acid having from 7 to 30 carbon atoms;
- b) sulphur or a sulphur-donor compound;
- 2) a composition consisting of:
- i) polythioltriazine;
- ii) a second component selected from thiurams, dithiocarbamates and thiazoles;
- and
- 3) a composition consisting of secondary polydiamines and sulphur.
Vulcanizable elastomeric composition including:
- the elastomeric copolymer obtained by copolymerizing:
- a) a monomer selected from the formula CH.sub.2 .dbd.CR'--CO--OR, wherein R is a monofunctional radical selected from linear or branched C1-C6 alkyl radicals and C1-C6 alkoxyalkyl radicals, and R' is selected from --H and --CH.sub.3 ;
- b) (meth)acrylonitrile;
- c2) a mixture of an unsaturated carboxylic acid, and an aliphatic or aromatic diepoxy compound,
- a vulcanizing agent selected from the group consisting of:
- A) a quaternary ammonium salt having the general formula (R).sub.4 --N.sup.+ X.sup.-, wherein R is selected from monofunctional hydrocarbon radicals having from monofunctional hydrocarbon radicals having from 1 to 25 carbon atoms and X.sup.- is a monofunctional anion, preferably selected from halogens, sulphates, bisulphates, hydroxides;
- B) an aliphatic or aromatic polyamine and polyamides and their derivatives.
Vulcanizable elastomeric composition including:
- the elastomeric copolymer obtained by copolymerizing:
- a) a monomer selected from the formula CH.sub.2 .dbd.CR'--CO--OR, wherein R is a monofunctional radical selected from linear or branched C1-C6 alkyl radicals and C1-C6 alkoxyalkyl radicals, and R' is selected from --H and --CH.sub.3 ;
- b) (meth)acrylonitrile;
- c3) a mixture consisting of an unsaturated carboxylic acid and a chlorinated vinyl ester;
- with the further condition that the elastomeric copolymer has a Mooney ML.sub.1+4 viscosity (100.degree. C.) of at least 10:
- a vulcanizing agent selected from the group consisting of:
- 1) a mixture of:
- a) a salt of a saturated or unsaturated fatty acid having from 7 to 30 carbon atoms;
- b) sulphur or a sulphur-donor compound;
- 2) a composition consisting of:
- i) polythioltriazine, preferably trithioltriazine;
- ii) a second component selected from thiurams, dithiocarbamates and thiazoles;
- 3) a composition consisting of secondary polydiamines and sulphur
- 4) a quaternary ammonium salt having the general formula (R).sub.4 -N.sup.+ X.sup.-, wherein R is selected from monofunctional hydrocarbon radicals having from monofunctional hydrocarbon radicals having from 1 to 25 carbon atoms and X.sup.- is a monofunctional anion, preferably selected from halogens, sulphates, bisulphates, hydroxides;
- and
- 5) an aliphatic or aromatic polyamine and polyamides and their derivatives.
Dependencies are inferred from the claim text.