Aqueous-based composition suitable for use in threadlocking applications
AssigneeHenkel Ireland Limited
InventorPeter Wrobel
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Abstract
The present invention relates to aqueous-based compositions suitable for use in threadlocking applications comprising: a) at least one carboxyl group containing (co)polymer; b) at least one polymerizable monomer A containing one acryloyl group; c) at least one polymerizable compound B containing at least two acryloyl groups; d) at least one encapsulated free radical initiator; and e) water. The inventive aqueous-based compositions are preferably substantially free of volatile organic solvents.
Claims4
A coated fastener obtained by a process, comprising the steps of:
- a) providing a fastener, preferably a threaded fastener;
- b) applying to at least one part of the fastener an aqueous-based composition comprising:
- i) at least one carboxyl group containing (co)polymer;
- ii) at least one polymerizable monomer A containing one acryloyl group;
- iii) at least one polymerizable compound B containing at least two acryloyl groups;
- iv) at least one encapsulated free radical initiator;
- and
- v) water;
- and
- c) drying the fastener at temperatures from 15° C. to 120° C. to form a coated fastener.
Reciprocally threaded articles having their respective threads bonded together by the cured product of an aqueous-based composition having been comprised of:
- i) at least one carboxyl group containing (co)polymer;
- ii) at least one polymerizable monomer A containing one acryloyl group;
- iii) at least one polymerizable compound B containing at least two acryloyl groups;
- iv) at least one encapsulated free radical initiator;
- and
- v) water.
A method for sealing and threadlocking a reciprocally threaded article, steps of which include:
- a) applying to at least one part of a threaded fastener an aqueous-based composition comprising:
- i) at least one carboxyl group containing (co)polymer;
- ii) at least one polymerizable monomer A containing one acryloyl group;
- iii) at least one polymerizable compound B containing at least two acryloyl groups;
- iv) at least one encapsulated free radical initiator;
- and
- v) water;
- b) drying the threaded fastener at temperatures from 15° C. to 120° C. to form a coated fastener;
- c) engaging the thread of the coated fastener with reciprocal thread of a receiver to form a reciprocally threaded article, wherein the threads of the reciprocally threaded article are bonded together by the cured product of the aqueous-based composition.
A process of using an aqueous-based composition for sealing or coating threaded fasteners or for threadlocking reciprocally threaded articles, steps of which comprise:
- a) providing unassembled threaded fasteners;
- and
- b) providing to thread of the unassembled threaded fasteners an aqueous-based composition comprising:
- i) at least one carboxyl group containing (co)polymer;
- ii) at least one polymerizable monomer A containing one acryloyl group;
- iii) at least one polymerizable compound B containing at least two acryloyl groups, to form a threaded fasteners assembly;
- iv) at least one encapsulated free radical initiator;
- and
- v) water;
- and
- c) exposing the threaded fasteners to conditions favorable to cure the aqueous-based composition.
Dependencies are inferred from the claim text.