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US 11,111,416 B2Granted
Anaerobically curable (meth)acrylate compositions
AssigneeHenkel IP & Holding GmbH
InventorsDavid Mullen, Lynne Sheerin, Brendan Kneafsey
Life of this patent
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Abstract
Anaerobically curable (meth)acrylate compositions, methods for their preparation, and uses thereof. The anaerobically curable compositions proved effective at bonding a wide variety of substrates, and the tensile strength performance of said compositions is excellent.
Claims28
An anaerobically curable composition comprising:
- (a) at least one (meth)acrylate component;
- (b) an anaerobic cure inducing component;
- and
- (c) a toughening agent selected from the group consisting of:
- (i) a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene;
- and (ii) a combination of a styrene butadiene block copolymer, methacrylate functionalised polybutadiene and propoxylated bisphenol A fumarate polyester;
- wherein the composition will not cure until exposed to an anaerobic environment and wherein the toughening agent is a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene and the methacrylate functionalised polybutadiene is present in an amount of about 5 to about 20 wt %.
4 more elements
An anaerobically curable composition comprising:
- (a) at least one (meth)acrylate component;
- (b) an anaerobic cure inducing component;
- and
- (c) a toughening agent selected from the group consisting of (i) a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene;
- and (ii) a combination of a styrene butadiene block copolymer, methacrylate functionalised polybutadiene and propoxylated bisphenol A fumarate polyester;
- wherein the composition will not cure until exposed to an anaerobic environment, and wherein the toughening agent comprises styrene butadiene block copolymer and wherein polystyrene represents about 35 wt % to about 45 wt % of the overall weight of the block copolymer.
3 more elements
An anaerobically curable composition, comprising:
- (a) at least one (meth)acrylate component;
- (b) an anaerobic cure inducing component;
- and
- (c) a toughening agent selected from the group consisting of (i) a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene;
- and (ii) a combination of a styrene butadiene block copolymer, methacrylate functionalised polybutadiene and propoxylated bisphenol A fumarate polyester;
- wherein the composition will not cure until exposed to an anaerobic environment, and wherein the toughening agent comprises propoxylated bisphenol A fumarate polyester present in an amount of about 15 to about 45 wt %.
3 more elements
An anaerobically curable composition comprising:
- (a) at least one (meth)acrylate component;
- (b) an anaerobic cure inducing component;
- and
- (c) a toughening agent selected from the group consisting of (i) a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene;
- and (ii) a combination of a styrene butadiene block copolymer, methacrylate functionalised polybutadiene and propoxylated bisphenol A fumarate polyester;
- wherein the composition will not cure until exposed to an anaerobic environment, and wherein the toughening agent comprises propoxylated bisphenol A fumarate polyester having a number average molecular weight of from about 2,500 to about 3,000.
3 more elements
An anaerobically curable composition, comprising:
- (a) at least one (meth)acrylate component;
- (b) an anaerobic cure inducing component;
- and
- (c) a toughening agent selected from the group consisting of (i) a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene;
- and (ii) a combination of a styrene butadiene block copolymer, methacrylate functionalised polybutadiene and propoxylated bisphenol A fumarate polyester;
- wherein the composition will not cure until exposed to an anaerobic environment, and further comprising a transition metal.
3 more elements
A process for preparing a reaction product from a curable composition, comprising the steps of:
- applying an activator composition to a desired substrate surface;
- applying to that surface an anaerobically curable one-part composition comprising:
- (a) a (meth)acrylate component;
- (b) a cure inducing component;
- and
- (c) a toughening agent selected from the group consisting of:
- (i) a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene;
- and, (ii) a combination of a styrene butadiene block copolymer, methacrylate functionalised polybutadiene and propoxylated bisphenol A fumarate polyester;
- mating a second surface to that substrate surface to form an assembly;
- and
- exposing the (meth)acrylate composition to an anaerobic environment for a time sufficient to cure the composition;
- wherein the composition will not cure until exposed to an anaerobic environment.
9 more elements
An anaerobically curable composition, comprising:
- (a) at least one (meth)acrylate component;
- (b) an anaerobic cure inducing component;
- and
- (c) a toughening agent selected from the group consisting of (i) a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene;
- and (ii) a combination of a styrene butadiene block copolymer, methacrylate functionalised polybutadiene and propoxylated bisphenol A fumarate polyester;
- wherein the composition will not cure until exposed to an anaerobic environment, wherein the toughening agent is a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene, and wherein the weight ratio of the methacrylate functionalised polybutadiene to the styrene butadiene block copolymer is about 2:3.
3 more elements
A method of anaerobically curing a (meth)acrylate composition, comprising the steps of:
- providing a one-part (meth)acrylate composition comprising:
- (a) a (meth)acrylate component;
- (b) a cure inducing component;
- and
- (c) a toughening agent selected from the group consisting of (i) a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene;
- and, (ii) a combination of a styrene butadiene block copolymer, methacrylate functionalised polybutadiene and propoxylated bisphenol A fumarate polyester;
- and
- exposing the (meth)acrylate composition to an anaerobic environment for a time sufficient to cure the composition;
- wherein the composition will not cure until exposed to an anaerobic environment, wherein the toughening agent is a combination of a styrene butadiene block copolymer and methacrylate functionalised polybutadiene, and wherein the weight ratio of the methacrylate functionalised polybutadiene to the styrene butadiene block copolymer is about 2:3.
6 more elements
Dependencies are inferred from the claim text.