US4285755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition and method
Assignee: Bostik Inc
•
Filing: 1979-09-17
•
Granted: 1981-08-25
•
Expires: 1999-09-17
Abstract
Abstract Adhesive composition based on acrylate monomers and a peroxide, together with selected halogenated aliphatic acids, which is storage stable and can be used as an anaerobic adhesive composition and a method of bonding by use of that adhesive to quickly form adhesive bonds to steel, copper, zinc and brass without use of a primer, which bonds do not lead to significant corrosion of the metals.
Inventors
- 👤 Gerhardt Piestert
- 👤 Heinz G. Gilch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:32
CPC Classifications
C; C09; C09J; C09J5/00; C09J4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
116 words
A method of bonding metal surfaces by use of an anaerobic adhesive composition consisting essentially of a polymerizable acrylic monomer, an organic peroxide selected from the group consisting of benzoyl peroxide; 2,5 dimethyl-2,5di(t-butylperoxy)hexane; 1,1 di-t-butylperoxy-3,3,5-trimethylcyclohexane; dilauryl peroxide and mixtures of these and an acidic substance characterized in that the acidic substance is a halogenated aliphatic monocarboxylic acid according to the general formula ##STR10## in which (i) each of X, Y and Z is Cl or Br or (ii) Z is H or R (where R is a methyl or ethyl group), and each of X and Y is Cl or Br or (iii) each of Y and Z is H or R and X is Cl.
Claim 2
Independent Claim
116 words
A method of bonding metal surfaces by use of an anaerobic adhesive composition consisting essentially of a polymerizable acrylic monomer, an organic peroxide selected from the group consisting of benzoyl peroxide; 2,5 dimethyl-2,5di(t-butylperoxy)hexane; 1,1 di-t-butylperoxy-3,3,5-trimethylcyclohexane; dilauryl peroxide and mixtures of these and an acidic substance characterized in that the acidic substance is a halogenated aliphatic monocarboxylic acid according to the general formula ##STR10## in which (i) each of X, Y and Z is Cl or Br or (ii) Z is H or R (where R is a methyl or ethyl group), and each of X and Y is Cl or Br or (iii) each of Y and Z is H or R and X is Cl.
Claim 3
Dependent Claim
27 words
A method according to claim 1 further characterized in that the adhesive composition is applied to an unprimed surface of iron, mild steel, nickel, copper or brass.
Claim 4
Dependent Claim
29 words
A method according to claim 1 further characterized in that the adhesive composition is applied to a surface of chromium, zinc, aluminium or stainless steel primed with an axomethine.
Claim 5
Dependent Claim
17 words
A method according to claim 1 further characterized in that the polymerizable monomer comprises ethylene glycol dimethacrylate.
Claim 6
Dependent Claim
16 words
A method according to claim 1 further characterized in that the acid used comprises trichloroacetic acid.
Claim 7
Dependent Claim
25 words
A method according to claim 5 characterized in that the acid is present to an extent of 0.5 to 2.0% by weight of the composition.
Claim 8
Dependent Claim
35 words
A method according to claim 1 further characterized in that the adhesive composition is applied to threads of a bolt and a nut is screwed onto the bolt to exclude air from the adhesive composition.
Claim 9
Independent Claim
125 words
A method of bonding metal surfaces by use of an anaerobic adhesive composition consisting essentially of a polymerizable acrylic monomer, an organic peroxide which is 2,5 dimethyl-2,5-di(t-butylperoxy)hexane and an acidic substance characterized in that the acidic substance is a halogenated aliphatic monocarboxylic acid according to the general formula ##STR11## in which (i) each of X, Y and Z is Cl or Br or (ii) z is H or R (where R is a methyl or ethyl group), and each of X and Y is Cl or Br or (iii) each of Y and Z is H or R and X is Cl, and in that the adhesive composition is applied to a clean metal surface which has not been treated with a substituted thiourea primer.
Claim 10
Independent Claim
125 words
A method of bonding metal surfaces by use of an anaerobic adhesive composition consisting essentially of a polymerizable acrylic monomer, an organic peroxide which is 2,5 dimethyl-2,5-di(t-butylperoxy)hexane and an acidic substance characterized in that the acidic substance is a halogenated aliphatic monocarboxylic acid according to the general formula ##STR11## in which (i) each of X, Y and Z is Cl or Br or (ii) z is H or R (where R is a methyl or ethyl group), and each of X and Y is Cl or Br or (iii) each of Y and Z is H or R and X is Cl, and in that the adhesive composition is applied to a clean metal surface which has not been treated with a substituted thiourea primer.
Claim 11
Dependent Claim
26 words
A method according to claim 8 further characterized in that the peroxide is present to an extent of 0.3 to 10% by weight of the composition.
Claim 12
Dependent Claim
27 words
A method according to claim 9 further characterized in that the adhesive composition is applied to an unprimed surface of iron, mild steel, nickel, copper or brass.
Claim 13
Dependent Claim
29 words
A method according to claim 9 further characterized in that the adhesive composition is applied to a surface of chromium, zinc, aluminum or stainless steel primed with an azomethine.
Claim 14
Dependent Claim
17 words
A method according to claim 9 further characterized in that the polymerizable monomer comprises ethylene glycol dimethacrylate.
Claim 15
Dependent Claim
16 words
A method according to claim 9 further characterized in that the acid used comprises trichloroacetic acid.
Claim 16
Dependent Claim
25 words
A method according to claim 13 characterized in that the acid is present to an extent of 0.5 to 2.0% by weight of the composition.
Claim 17
Dependent Claim
35 words
A method according to claim 9 further characterized in that the adhesive composition is applied to threads of a bolt and a nut is screwed onto the bolt to exclude air from the adhesive composition.
Claim 18
Dependent Claim
104 words
An anaerobic adhesive composition consisting essentially of a polymerizable acrylate monomer, an organic peroxide selected from the group consisting of benzoyl peroxide; 2,5-dimethyl-2,5-di-(t-butylperoxy)hexane; 1,1-di-t-butylperoxy-3,3,5-trimethylcyclohexane; dilaurylperoxide and mixtures of these and an acidic substance characterized in that the acidic substance is a halogenated aliphatic monocarboxylic acid according to the general formula ##STR12## in which (i) each of X, Y and Z is Cl or Br or (ii) Z is H or R (where R is a methyl or ethyl group), and each of X and Y is Cl or Br or (iii) each of Y and Z is H or R and X is Cl.
Claim 19
Dependent Claim
104 words
An anaerobic adhesive composition consisting essentially of a polymerizable acrylate monomer, an organic peroxide selected from the group consisting of benzoyl peroxide; 2,5-dimethyl-2,5-di-(t-butylperoxy)hexane; 1,1-di-t-butylperoxy-3,3,5-trimethylcyclohexane; dilaurylperoxide and mixtures of these and an acidic substance characterized in that the acidic substance is a halogenated aliphatic monocarboxylic acid according to the general formula ##STR12## in which (i) each of X, Y and Z is Cl or Br or (ii) Z is H or R (where R is a methyl or ethyl group), and each of X and Y is Cl or Br or (iii) each of Y and Z is H or R and X is Cl.
Claim 20
Dependent Claim
62 words
An anaerobic adhesive composition consisting essentially of a polymerizable acrylate monomer of the general formula ##STR13## and n is 0 or 1, x is an integer from 1 to 8 and y is an integer from 1 to 20, a peroxide which is 2,5 dimethyl-2,5-di(t-butylperoxy)hexane and an acidic substance selected from the group consisting of trichloroacetic acid, dichloroacetic acid, or tribromoacetic acid.
Claim 21
Dependent Claim
62 words
An anaerobic adhesive composition consisting essentially of a polymerizable acrylate monomer of the general formula ##STR13## and n is 0 or 1, x is an integer from 1 to 8 and y is an integer from 1 to 20, a peroxide which is 2,5 dimethyl-2,5-di(t-butylperoxy)hexane and an acidic substance selected from the group consisting of trichloroacetic acid, dichloroacetic acid, or tribromoacetic acid.
Claim 22
Dependent Claim
14 words
An adhesive composition according to claim 17 wherein the monomer comprises ethylene glycol dimethacrylate.
Claim 23
Dependent Claim
21 words
An adhesive composition according to claim 17 comprising 0.5 to 1% by weight trichloroacetic acid on the weight of the composition.
Claim 24
Dependent Claim
14 words
An adhesive composition according to claim 17 further characterized by containing monoethylenically unsaturated monomer.
Claim 25
Dependent Claim
30 words
An adhesive composition according to claim 17 further characterized by containing materials which influence flow characteristics of the adhesive composition or flexibility characteristics of bonds formed by the adhesive composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |