Two-part adhesive

Abstract

A two-part adhesive consisting of a first liquid comprising 100 parts by weight of a polymerizable vinyl monomer and from 0.1 to 20 parts by weight of an organic peroxide and a second liquid comprising 100 parts by weight of a polymerizable vinyl monomer and from 0.05 to 15 parts by weight of a reducing agent, wherein either one or both of the first and second liquids contain from 0.4 to 5% by weight of water, and the content of water is more than 0.2% by weight based on the total amount of the first and second liquids.

What is claimed is: 
     
       1. A two-part adhesive consisting of a first liquid comprising 100 parts by weight of at least one polymerizable vinyl monomer and from 0.1 to 20 parts by weight of an organic peroxide and a second liquid comprising 100 parts by weight of at least one polymerizable vinyl monomer and from 0.05 to 15 parts by weight of a reducing agent, wherein either one or both of the first and second liquids contain from 0.4 to 5% by weight of water, and the content of water is more than 0.2% by weight based on the total amount of the first and second liquids wherein at least one of the polymerizable vinyl monomers in each of the first and second liquids is a (meth)acrylate. 
     
     
       2. The adhesive according to claim 1, wherein the content of water is from 0.4 to 5% by weight based on the total amount of the first and second liquids. 
     
     
       3. The adhesive according to claim 1, wherein at least 70% by weight of the polymerizable vinyl monomer in each of the first and second liquids is a (meth)acrylate. 
     
     
       4. The adhesive according to claim 1, wherein from 0.1 to 10% by weight of the polymerizable vinyl monomer in each of the first and second liquids is a polymerizable acidic phosphoric acid compound of the following formula (I) or its amine salt: ##STR6## wherein R is CH 2  ═CR 4  CO(OR 5 ) m  -- (wherein R 4  is H or CH 3 , R 5  is --C 2  H 4  --, --C 3  H 6  --, ##STR7## --CH 4  H 8  --, --C 6  H 12  -- or ##STR8## and m is an integer of from 1 to 10) and n is 1 or 2. 
     
     
       5. The adhesive according to claim 1, wherein at least one of the polymerizable vinyl monomers in each of the first and second liquids is (meth)acrylic acid. 
     
     
       6. The adhesive according to claim 3, wherein said (meth)acrylate is selected from the group consisting of methyl (meth)acrylate, cyclohexyl (meth)acrylate, benzyl (meth)acrylate, tetrahydrofuryl (meth)acrylate, dicyclopentyl (meth)acrylate, dicyclopentenyl (meth)acrylate, glycerol (meth)acrylate, and glycerol di(meth)acrylate. 
     
     
       7. The adhesive according to claim 4, wherein n is 1. 
     
     
       8. The adhesive according to claim 4, wherein n is 2. 
     
     
       9. The adhesive according to claim 4, wherein at least 70% by weight of the polymerizable vinyl monomer is a (meth)acrylate. 
     
     
       10. The adhesive according to claim 1, wherein each of the first and second liquids further comprises paraffin. 
     
     
       11. The adhesive according to claim 1, wherein each of the first and second liquids further comprises a thermoplastic polymer selected from the group consisting of a methyl methacrylate-butadiene-styrene copolymer and a linear polyurethane. 
     
     
       12. The adhesive according to claim 1, wherein each of the first and second liquids further comprises an elastomer selected from the group consisting of a nitrile-butadiene rubber and chlorosulfonated polyethylene. .Iadd. 
     
     
       13.  A cured adhesive having a water content of more than 0.2% by weight, prepared by mixing and aging for 24 hours a two-part adhesive consisting of a first liquid comprising 100 parts by weight of at least one polymerizable vinyl monomer and from 0.1 to 20 parts by weight of an organic peroxide and a second liquid comprising 100 parts by weight of at least one polymerizable vinyl monomer wherein either one or both of the first and second liquids contain from 0.4 to 5% by weight of water, and from 0.05 to 15 parts by weight of a reducing agent, wherein at least one of the polymerizable vinyl monomers in each of said first and, second liquids is a (meth)acrylate, and wherein said water content of more than 0.2% by weight is based on the total amount of the first and second liquids. .Iaddend..Iadd.14. The cured adhesive according to claim 13, wherein at least 70% by weight of the polymerizable vinyl monomer in each of the first and second liquids is a (meth)acrylate. .Iaddend..Iadd.15. The cured adhesive as claimed in claim 13, wherein from 0.1 to 10% by weight of the polymerizable vinyl monomer in each of the first and second liquids is a polymerizable acidic phosphoric acid compound of the following formula (I) or its amine salt: ##STR9## 
     
     
        and m is an integer of from 1 to 10 and n is 1 or 2. .Iaddend..Iadd.16. The cured adhesive as claimed in claim 13, wherein at least one of the polymerizable vinyl monomers in each of the first and second liquids is (meth)acrylic acid. .Iaddend..Iadd.17. The cured adhesive as claimed in claim 13, wherein said (meth)acrylate is selected from the group consisting of methyl (meth)acrylate, cyclohexyl (meth)acrylate, benzyl (meth)acrylate, tetrahydrofuryl (meth)acrylate, dicyclopentyl (meth)acrylate, dicyclopentenyl (meth)acrylate, glycerol (meth)acrylate, and glycerol di(meth)acrylate. .Iaddend..Iadd.18. The cured adhesive according to claim 15, wherein n is 1. .Iaddend..Iadd.19. The cured adhesive according to claim 15, wherein n is 2. .Iaddend..Iadd.20. The cured adhesive according to claim 15, wherein at least 70% by weight of the polymerizable vinyl monomer is a (meth)acrylate. .Iaddend..Iadd.21. The cured adhesive according to claim 13, wherein each of the first and second liquids further comprises paraffin. .Iaddend..Iadd.22. The cured adhesive according to claim 13, wherein each of the first and second liquids further comprises a thermoplastic polymer selected from the group consisting of a methyl methacrylate-butadiene-styrene copolymer and a linear polyurethane. .Iaddend..Iadd.23. The cured adhesive according to claim 13, wherein each of the first and second liquids further comprises an elastomer selected from the group consisting of a nitrile-butadiene rubber and chlorosulfonated polyethylene. .Iaddend..Iadd.24. An article comprising a surface coated with the cured adhesive of claim 13. .Iaddend..Iadd.25. An article comprising a surface coated with the cured 
     
     
        adhesive of claim 14. .Iaddend..Iadd.26.  An article comprising a surface coated with the cured adhesive of claim 15. .Iaddend..Iadd.27. An article comprising a surface coated with the cured adhesive of claim 16. .Iaddend..Iadd.28. An article comprising a surface coated with the cured adhesive of claim 17. .Iaddend..Iadd.29. An article comprising a surface coated with the cured adhesive of claim 18. .Iaddend..Iadd.30. An article comprising a surface coated with the cured adhesive of claim 19. .Iaddend..Iadd.31. An article comprising a surface coated with the cured adhesive of claim 20. .Iaddend..Iadd.32. An article comprising a surface coated with the cured adhesive of claim 21. .Iaddend..Iadd.33. An article comprising a surface coated with the cured adhesive of claim 22. .Iaddend..Iadd.34. An article comprising a surface coated with the cured adhesive of claim 23. .Iaddend..Iadd.35. An article comprising a surface coated with the cured adhesive of claim 13, wherein said surface is a metal surface. .Iaddend..Iadd.36. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 1 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.37. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 2 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.38. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 3 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.39. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 4 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.40. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 5 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together 
     
     
        followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.41.  A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 6 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.42. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 7 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.43. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 8 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.44. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 9 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.45. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 10 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.46. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 11 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.47. A process for bonding two surfaces together, comprising the steps of mixing the first and second liquids of the two-part adhesive of claim 12 together, applying the mixed liquids to said surfaces to be bonded together, and bonding said surfaces together followed by aging said mixed liquids for 24 hours. .Iaddend..Iadd.48. The process as claimed in claim 36, wherein at least one of said surfaces is metal. .Iaddend..Iadd.49. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 1 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.50. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 2 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.51. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 3 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.52. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 4 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.53. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 5 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.54. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 6 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. 
     
     
        .Iaddend..Iadd.55.  A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 7 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.56. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 8 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.57. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 9 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.58. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 10 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.59. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 11 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.60. A process for bonding two surfaces together, comprising the steps of separately applying the first and second liquids of the two-part adhesive of claim 12 to first and second surfaces to be bonded, respectively, bonding said surfaces together such that said first and second liquids contact one another, followed by aging for 24 hours. .Iaddend..Iadd.61. The process as claimed in claim 49, wherein at least one of said surfaces is metal. .Iaddend.