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| Starch composite reinforced rubber composition and tire with at least one component thereof |
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| Granular powder of modified polytetrafluoroethylene |
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| Process for cross-linking or degrading polymers and shaped articles obtained by this process |
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| Block copolymers of monovinylarenes and conjugated dienes and preparation thereof |
| OF THE INVENTION This is a continuation-in-part of application Ser. No. 08/130,039 filed Sep. 30, 1... |
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| Plastic toughened plastics |
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| Method for producing aqueous polymer dispersions containing colorants |
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| Low temperature crosslinkable latexes formed by in-situ generation of a crosslinkable functionality |
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| Clear barrier composites containing polyisobutylene/polyolefin alloy components |
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Bonding method and adhesive useful for the method
| Details |
Inventors: Okamura, Naomi; Aoki, Hiroshi; Makino, Junzo; Yagi, Hajime; Arai, Yasuo; Yamanaka, Takashi;
Assignee: Cemedine Company, Ltd. (Tokyo, JP)
Primary Examiner: Schofer; Joseph L.
Assistant Examiner: Sweet; Mark D.
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt
A method for bonding two objects by means of the following two adhesives: (A) a moisture-inducible room temperature anion polymerization curing adhesive composed essentially of at least one anion polymerizable compound selected from the group consisting of an .alpha.-cyanoacrylate compound of the formula: ##STR1## wherein R is an alkyl group having from 1 to 16 carbon atoms, an alkoxyalkyl group having 2 to 16 carbon atoms, a haloalkyl group having from 1 to 16 carbon atoms, a cyanoalkyl group having from 2 to 16 carbon atoms, an aralkyl group having from 6 to 12 atoms, an acyloxyalkyl group having from 2 to 16 carbon atoms, a cycloalkyl group having from 3 to 16 carbon atoms, an alkenyl group having from 2 to 16 carbon atoms or an aryl group having from 6 to 12 carbon atoms, and a 1,1-disubstituted diene compound of the formula: ##STR2## wherein each of R.sup.1 and R.sup.2 which may be the same or different, is a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, an aryl group, an aralkyl group having from 6 to 12 carbon atoms or a halogen atom, R.sup.3 is a hydrogen atom or a methyl group, each of X and Y which may be the same or different, is a cyano group, a carboxylic acid ester group having from 2 to 12 carbon atoms, an ethylsulfone group, a phenylsulfone group, a formyl group, an acetyl group, a benzoyl group, an amide group, a diethyl sulfonyl group, or a phenyl group; and (B) a room temperature self-curing adhesive containing from 0.05 to 50% by weight of an anion polymerization accelerator, said self-curing adhesive being selected from the group consisting of (1) a room temperature moisture-curing adhesive, (2) a room temperature curing two-part type epoxy resin adhesive, and (3) a room temperature curing synthetic resin aqueous emulsion adhesive, which comprises applying said two adhesives (A) and (B) at the bonding interface of the objects so that they do not contact each other and pressing the objects to each other to bring the two adhesives in contact with each other. |
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DETAILED DESCRIPTION In view of the above-mentioned drawbacks of the conventional adhesives and bonding methods, it is an object of the present invention to provide a bonding method whereby after laminating the objects to be bonded, provisional adhesion can be attained in a short period of time without using any other tools, and upon expiration of a certain period of time after the lamination, adequate bonding properties, particularly adequate peel adhesive strength and impact adhesive strength, can be obtained.
It is another object of the present invention to provide a bonding method whereby adequate bonding properties can be provided not only to ordinary objects but also to porous objects or objects having a roughened surface, so that the method is applicable to the bonding of a wide range of objects.
A further object of the present invention is to provide an adhesive useful for such a bonding method.
The present inventors have conducted extensive research to solve the above-mentioned problems, and have found that the above-mentioned objects can easily be attained by using a combination of two adhesives i.
e.
a certain specific room temperature anion polymerization curable adhesive and a certain specific room temperature self-curing adhesive containing an anion polymerization accelerator, and by applying the two adhesives at the bonding interface of the objects to be bonded so that the two adhesives do not contact each other and then pressing the objects to each other to bring the two adhesives in contact with each other.
Namely, the present invention provides a method for bonding two objects by means of the following two adhesives: (A) a moisture-inducible room temperature anion polymerization curing adhesive composed essentially of at least one anion polymerizable compound selected from the group consisting of an .
alpha.
-cyanoacrylate compound of the formula: ##STR3## wherein R is an alkyl group having from 1 to 16 carbon atoms, an alkoxyalkyl group having 2 to 16 carbon atoms, a haloalkyl group having from 1 to 16 carbon atoms, a cyanoalkyl group having from 2 to 16 carbon atoms, an aralkyl group having from 6 to 12 carbon atoms, an acyloxyalkyl group having from 2 to 16 carbon atoms, a cycloalkyl group having from 3 to 16 carbon atoms, an alkenyl group having from 2 to 16 carbon atoms or an aryl group having from 6 to 12 carbon atoms, and a 1,1-disubstituted diene compound of the formula: ##STR4## wherein each of R
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Adhesives and Rubbers 
