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US 11,767,452 B2Granted
Curable composition, especially as crystallizing rubber to substrate bonding primer
AssigneeHenkel AG & Co. KGaA
InventorsAnna Ryzhova, Christian Beirich, Wolfgang Weimar, Martin Hornung
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Abstract
The subject matter is a new composition comprising at least one hydroxyl-group containing resin, at least one nitroso-containing compound or at least one nitroso precursor compound, at least one blocked isocyanate and at least one crystallization germ suitable as primer or coating for rubber to substrate bonding, which provides a scratch resistant surface, when applied, and excellent adhesion and steam resistance for rubber to substrate bonds. These compositions can especially be used as one coat systems.
Claims12
A curable composition comprising
- a) at least one hydroxyl-group containing resin in a range of from 0.5 to 20 wt. % of the total weight of the curable composition,
- b) at least one nitroso-containing compound or at least one nitroso precursor compound in a range of from 1 to 60 wt. % of the total weight of the curable composition, wherein the at least one nitroso-containing compound or the at last one nitroso precursor compound is an aromatic nitroso-containing compound or an aromatic nitroso precursor compound comprising at least one alkoxy silane moiety and at least one moiety selected from an aromatic nitroso or an aromatic nitroso precursor or combinations thereof,
- c) at least one blocked isocyanate in a range of from 0.01 to 10 wt. % of the total weight of the curable composition,
- d) at least one crystallization germ in a range of from 0.01 to 5 wt. % of the total weight of the curable composition, the at least one crystallization germ including at least one of metal particles, metal oxide particles, and glass particles, wherein the metal particles, metal oxide particles, and glass particles, have a maximal particle size of 200 μm.
1 more element
Dependencies are inferred from the claim text.