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US 2014/0235758 A1Published application
Adhesive compositions
AssigneeHenkel US IP LLC
InventorsChih-min Cheng, James Murray, Charles F. Schuft
Life of this patent
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Abstract
The present invention provides fast fixturing two part adhesive compositions which include a first part containing a (meth)acrylic component and a cure system for the epoxy resin component of the second part and a second part containing an epoxy resin component and a cure system for the (meth)acrylic component of the first part.
Claims14
An adhesive composition comprising:
- (a) a first part comprising:
- (i) a (meth)acrylic component at least a portion of which comprises isobornyl(meth)acrylate;
- (ii) an amine catalyst;
- (iii) a vinyl terminated polybutadiene in liquid form at room temperature;
- (iv) a reactive acid component;
- (v) a solid zinc (meth)acrylate salt;
- (vi) a zinc and/or bismuth complex;
- and
- (vii) a free-radical inhibitor;
- and
- (b) a second part comprising:
- (i) a resin component comprising epoxy groups;
- (ii) a benzoyl peroxide;
- (iii) a plasticizer;
- and
- (vi) optionally, a block copolymer,
- wherein when the first and second parts are mixed and applied to at least one substrate, the composition will have up to 5 minutes of open time and when the substrates are mated they will show a fixture time of less than 90 seconds at a temperature of less than 120° C. at which point the mated assembly can support 3 kg load.
14 more elements
A method of preparing a two-part adhesive composition comprising:
- An adhesive composition comprising:
- (a) a first part comprising:
- (i) a (meth)acrylic component at least a portion of which comprises isobornyl(meth)acrylate;
- (ii) an amine catalyst;
- (iii) a vinyl terminated polybutadiene in liquid form at room temperature;
- (iv) a reactive acid component;
- (v) a solid zinc (meth)acrylate salt;
- (vi) a zinc and/or bismuth complex;
- and
- (vii) a free-radical inhibitor;
- and
- (b) a second part comprising:
- (i) a resin component comprising epoxy groups;
- (ii) a benzoyl peroxide;
- (iii) a plasticizer;
- and
- (vi) optionally, a block copolymer,
- wherein when the first and second parts are mixed and applied to at least one substrate, the composition will have up to 5 minutes of open time and when the substrates are mated they will show a fixture time of less than 90 seconds at a temperature of less than 60° C. at which point the mated assembly can support 3kg load.
15 more elements
A method of bonding a first surface to a second surface, comprising:
- providing a two part composition comprising:
- (a) a first part comprising:
- (i) a (meth)acrylic component at least a portion of which comprises isobornyl(meth)acrylate;
- (ii) an amine catalyst;
- (iii) a vinyl terminated polybutadiene in liquid form at room temperature;
- (iv) a reactive acid component;
- (v) a solid zinc (meth)acrylate salt;
- (vi) a zinc and/or bismuth complex;
- and
- (vii) a free-radical inhibitor;
- and
- (b) a second part comprising:
- (i) a resin component comprising epoxy groups;
- (ii) a benzoyl peroxide;
- (iii) a plasticizer;
- and
- (iv) optionally, a block copolymer,
- wherein when the first and second parts are mixed and applied to at least one substrate, the composition will have up to 5 minutes of open time and when the substrates are mated they will show a fixture time of less than 90 seconds at a temperature of less than 60° C. at which point the mated assembly can support 3 kg load.
15 more elements
Dependencies are inferred from the claim text.