Rubber mixtures for roll coverings
View Patent ↗This invention relates to a rubber mixture containing a carboxylated nitrile rubber, a metal salt of an acrylate, a liquid acrylate, a silane, optionally together with further additives, to a process for the production thereof and to use for moldings of all kinds, in particular roll coverings.
1. A rubber mixture comprising
a) at least one carboxylated hydrogenated nitrile rubbers and optionally a nitrile rubber
b) from 10 to 120 phr of one or more metal salts of an acrylate
c) from 5 to 80 phr of one or more liquid acrylates optionally applied onto a support,
d) from 0.01 to 8 phr of one or more silanes, and
e) optionally further additives and/or fillers.
2. A rubber mixture according to claim 1 , wherein said nitrile rubber is selected from the group consisting of hydrogenated NBR, carboxylated NBR, partially hydrogenated carboxylated NBR and completely hydrogenated carboxylated NBR.
3. A rubber mixture according to claim 1 , wherein the metal salt of the acrylate is a Zn diacrylate or a Zn dimethacrylate or a mixture thereof.
4. A rubber mixture according to claim 1 , wherein the liquid acrytate is butanediol dimethacrylate or trimethyloipropane trimethacrylate or a mixture thereof.
5. A rubber mixture according to claim 1 , wherein vinylsilane is used as the silane.
6. A rubber mixture according to claim 1 , wherein said mixture further more contains a silicate filler, carbon black, zinc oxide, magnesium oxide or a mixture of two or more of these components.
7. A rubber mixture according to claim 1 , wherein the mixture contains vulcanization retarders and/or vulcanization accelerators.
8. A vulcanizable rubber mixture comprising a rubber mixture, which comprises
a) at least one carboxylated hydrogenated nitrile rubbers and optionally a carboxyiated nitrile rubber
b) from 10 to 120 phr of one or more metal salts of an acrylate
c) from 5 to 80 phr of one or more liquid acrylates optionally applied onto a support,
d) from 0.01 to 8 phr of one or more silanes, and
e) optionally further additives and/or fillers.
9. A molding comprising a rubber mixture, which comprises
a) at least one carboxylated hydrogenated nitrile rubbers and optionally a carboxylated nitrile rubber
b) from 10 to 120 hr of one or more metal salts of an acrylate
c) from 5 to80 ohr of one or more liquid acrylates optIonally applied onto a support,
d) from 0.01 to 8 phr of one or more silanes, and
e) optionally further additives and/or fillers.