Anaerobically curable compositions
AssigneeHenkel AG & Co. KGaA
InventorsGreg Clarke, Rory Barnes, Patrick O'Dwyer
Life of this patent
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Abstract
An anaerobically curable composition in dry to touch is provided, which is formed from: (a) a liquid anaerobically curable component; (b) a thermoplastic polyurethane (“TPU”) component in an amount of about 10% to about 35%, for example from about 20% to about 30%, by weight based on the total weight of the composition; and (c) a curing component for curing the liquid anaerobically curable component.
Claims21
An anaerobically curable composition in dry to touch form, the anaerobically curable composition formed from:
- (a) a liquid anaerobically curable component;
- (b) a thermoplastic polyurethane (“TPU”) component present in an amount of from about 10% to about 35% by weight, based on the total weight of the anaerobically curable composition, wherein the TPU component comprises:
- (i) polyester segments, based on at least one of a greater than C10 diol or a greater than C10 dicarboxylic acid, or
- (ii) a (co)polyester of dodecanedioic acid and 1,6-hexanediol, said (co)polyester having a melting point of about 70° C., and with an OH number from about 27 to about 34 mg KOH/g (as measured according to standard procedure DIN 53240-2);
- and
- (c) a curing component for curing the liquid anaerobically curable component, wherein the curing component comprises a peroxide in liquid form free of encapsulation;
- and
- (d) a solvent present in an amount less than 1% by weight, based on the total weight of composition,
- wherein the TPU component has a mass average molar mass Mw from about 50,000 to about 100,000, and
- wherein the TPU is soluble in the composition.
An anaerobically curable composition in dry to touch form, the anaerobically curable composition formed from:
- (a) a liquid anaerobically curable component;
- (b) a thermoplastic polyurethane (“TPU”) component present in an amount of from about 20% to about 30% by weight, based on the total weight of the anaerobically curable composition, wherein the TPU component comprises:
- (i) polyester segments, based on at least one of a greater than C10 diol or a greater than C10 dicarboxylic acid, or
- (ii) a (co)polyester of dodecanedioic acid and 1,6-hexanediol, said (co)polyester having a melting point of about 70° C., and with an OH number from about 27 to about 34 mg KOH/g (as measured according to standard procedure DIN 53240-2);
- and
- (c) a curing component for curing the liquid anaerobically curable component, wherein the curing component comprises a peroxide in liquid form free of encapsulation;
- and
- (d) a solvent present in an amount less than 1% by weight, based on the total weight of composition,
- wherein the TPU component has a mass average molar mass Mw from about 55,000 to about 75,000, and
- wherein the TPU is soluble in the composition.
Dependencies are inferred from the claim text.