US5416142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding and bonding compositions
Assignee: Oatey Co
•
Filing: 1994-05-20
•
Granted: 1995-05-16
•
Expires: 2014-05-20
Abstract
Abstract A method of adhesively bonding or welding a first plastic surface to a second plastic surface is described which comprises the steps of: (I) applying to the first surface or second surface or both surfaces, a composition which is free of hollow microspheres and comprises a mixture of (A) from about 5% to about 60% by weight of at least one water-insoluble polymer selected from ABS, PVC, CPVC or mixtures thereof; (B) from about 1% to about 60% by weight of at least one water-insoluble polymer selected from acrylic polymers, vinyl aromatic polymers and vinylpyrrolidone polymers; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B); (II) contacting the first surface with the second surface; and (III) allowing the adhesive composition to form a bond or weld between the first surface and the second surface. The invention also relates to compositions which comprise a mixture of components (A) through (C) as defined above.
Inventors
- 👤 Charles N. Bush
- 👤 Paul F. Naton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:09
CPC Classifications
C; C08; C08L; C08L101/00; C08J; C08J5/00; C08J5/12; C08J5/124; C08J5/125; C09; C09J; C09J127/00; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
157 words
A method of adhesively bonding or welding a first plastic surface to a second plastic surface which comprises the steps of: (I) applying to the first surface or second surface or both surfaces, a composition which is free of hollow microspheres and comprises a mixture of (A) from about 5% to about 60% by weight of at least one water-insoluble polymer selected from ABS, PVC, CPVC or mixtures thereof; (B) from about 1% to about 60% by weight of at least one additional water-insoluble polymer selected from imide-containing acrylic polymers, copolymers of styrene-butadiene, styrene-maleic anhydride and styrene-acrylonitrile, and vinyl pyrrolidone polymers; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B); (II) contacting the first surface with the second surface; and (III) allowing the adhesive composition to form a bond or weld between the first surface and the second surface.
Claim 2
Independent Claim
157 words
A method of adhesively bonding or welding a first plastic surface to a second plastic surface which comprises the steps of: (I) applying to the first surface or second surface or both surfaces, a composition which is free of hollow microspheres and comprises a mixture of (A) from about 5% to about 60% by weight of at least one water-insoluble polymer selected from ABS, PVC, CPVC or mixtures thereof; (B) from about 1% to about 60% by weight of at least one additional water-insoluble polymer selected from imide-containing acrylic polymers, copolymers of styrene-butadiene, styrene-maleic anhydride and styrene-acrylonitrile, and vinyl pyrrolidone polymers; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B); (II) contacting the first surface with the second surface; and (III) allowing the adhesive composition to form a bond or weld between the first surface and the second surface.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the first and second plastic surfaces are PVC or CPVC surfaces.
Claim 4
Dependent Claim
29 words
The method of claim 1 wherein the first surface is an inner surface of a plastic fitting, and the second surface is the outer surface of a plastic pipe.
Claim 5
Dependent Claim
17 words
The method of claim 3 wherein the plastic fitting and plastic pipe comprise ABS, PVC or CPVC.
Claim 6
Dependent Claim
10 words
The method of claim 1 wherein polymer (A) is CPVC.
Claim 7
Dependent Claim
14 words
The method of claim 1 wherein the polymer (B) is an imide-containing acrylic polymer.
Claim 8
Dependent Claim
26 words
The method of claim 1 wherein the polymer (B) is at least one imidized acrylic copolymer containing at least about 5% by weight of glutarimide groups.
Claim 9
Dependent Claim
40 words
The method of claim 7 wherein the glutarimide groups present in copolymer (B) are characterized by the formula ##STR6## wherein R 1 , R 2 and R 3 are each independently hydrogen or lower alkyl, aryl, alkaryl or aralkyl groups.
Claim 10
Dependent Claim
29 words
The method of claim 8 wherein R 1 and R 2 are methyl groups and R 3 is an alkyl group containing from 1 to about 4 carbon atoms.
Claim 11
Dependent Claim
12 words
The method of claim 9 wherein R 3 is a methyl group.
Claim 12
Dependent Claim
59 words
The method of claim 7 wherein the acrylic polymer (B) contains repeating units characterized by the formula ##STR7## wherein R 1 , R 2 , R 4 and R 5 are each independently hydrogen or lower alkyl groups containing from 1 to about 6 carbon atoms, and R 3 is hydrogen or an alkyl, aryl, alkaryl or aralkyl group.
Claim 13
Dependent Claim
20 words
The method of claim 10 wherein R 3 is an alkyl group containing from 1 to about 4 carbon atoms.
Claim 14
Dependent Claim
34 words
The method of claim 6 wherein the imide-containing acrylic polymer is a copolymer of an alkyl acrylate or alkyl methacrylate and an imide selected from the group consisting of maleimide, N-alkylmaleimide, N-cycloalkylmaleimide, and N-arylmaleimide.
Claim 15
Dependent Claim
17 words
The method of claim 13 wherein the acrylic polymer is a copolymer of methyl methacrylate and N-cyclohexylmaleimide.
Claim 16
Dependent Claim
13 words
The method of claim 1 wherein polymer (B) is a styrene-maleic anhydride copolymer.
Claim 17
Dependent Claim
12 words
The method of claim 1 wherein polymer (B) is a styrene-acrylonitrile copolymer.
Claim 18
Dependent Claim
12 words
The method of claim 1 wherein polymer (B) is a styrene-butadiene copolymer.
Claim 19
Dependent Claim
13 words
The method of claim 1 wherein polymer (B) is an N-vinyl-2-pyrrolidone-vinyl ester copolymer.
Claim 20
Dependent Claim
33 words
The method of claim 1 wherein the composition (I) contains from about 5% to about 30% by weight of polymer (A) and from about 1% to about 30% by weight of polymer (B).
Claim 21
Dependent Claim
24 words
The method of claim 1 wherein volatile organic liquid (C) comprises methyl ethyl ketone, acetone, tetrahydrofuran, cyclohexanone or mixtures of two or more thereof.
Claim 22
Dependent Claim
27 words
The method of claim 1 wherein composition (I) also contains (D) from about 0.1% to about 5% by weight of at least one solid particulate inorganic filler.
Claim 23
Dependent Claim
12 words
The method of claim 21 wherein the filler (D) is fumed silica.
Claim 24
Independent Claim
150 words
A method of adhesively bonding or welding a first plastic surface to a second plastic surface wherein the first and second plastic surfaces comprise PVC or CPVC which comprises the steps of (I) applying to the first surface or second surface or both surfaces, a composition which is free of hollow microspheres and comprises a mixture of (A) from about 5% to about 30% by weight of at least one water-insoluble polymer selected from PVC, CPVC or mixtures thereof; (B) from about 1% to about 30% by weight of at least one imide-containing acrylic polymer; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent copolymer (A) and (B); (II) contacting the first surface with the second surface; and (III) allowing the adhesive composition to form a bond or weld between the first surface and the second surface.
Claim 25
Independent Claim
150 words
A method of adhesively bonding or welding a first plastic surface to a second plastic surface wherein the first and second plastic surfaces comprise PVC or CPVC which comprises the steps of (I) applying to the first surface or second surface or both surfaces, a composition which is free of hollow microspheres and comprises a mixture of (A) from about 5% to about 30% by weight of at least one water-insoluble polymer selected from PVC, CPVC or mixtures thereof; (B) from about 1% to about 30% by weight of at least one imide-containing acrylic polymer; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent copolymer (A) and (B); (II) contacting the first surface with the second surface; and (III) allowing the adhesive composition to form a bond or weld between the first surface and the second surface.
Claim 26
Dependent Claim
29 words
The method of claim 23 wherein the first surface is an inner surface of a plastic fitting, and the second surface is the outer surface of a plastic pipe.
Claim 27
Dependent Claim
40 words
The method of claim 23 wherein the composition (I) comprises from about 5% to about 25% by weight of PVC or CPVC resin and from about 3% to about 15% by weight of at least one imide-containing acrylic polymer (B).
Claim 28
Dependent Claim
23 words
The method of claim 23 wherein the composition (I) comprises from about 50% to about 85% by weight of the organic liquid (C).
Claim 29
Dependent Claim
21 words
The method of claim 23 wherein the imide-containing acrylic polymer (B) contains at least about 5% by weight of glutaramide groups.
Claim 30
Dependent Claim
57 words
The method of claim 23 wherein the imide-containing acrylic polymer (B) is characterized by the formula ##STR8## wherein R 1 , R 2 , R 4 and R 5 are each independently hydrogen or alkyl groups containing from 1 to about 6 carbon atoms, and R 3 is hydrogen or an alkyl, aryl, alkaryl or aralkyl group.
Claim 31
Dependent Claim
23 words
The method of claim 28 wherein R 1 , R 2 , R 3 , R 4 and R 5 are methyl groups.
Claim 32
Dependent Claim
35 words
The method of claim 23 wherein the imide-containing acrylic polymer (B) is a copolymer of an alkyl acrylate or alkyl methacrylate and an imide selected from the group consisting of maleimide, N-alkylmaleimide, N-cycloalkylmaleimide and N-arylmaleimide.
Claim 33
Dependent Claim
18 words
The method of claim 30 wherein the acrylic polymer (B) is a copolymer of methyl methacrylate and N-cyclohexylmaleimide.
Claim 34
Dependent Claim
26 words
The method of claim 23 wherein the organic liquid (C) comprises methyl ethyl ketone, acetone, methyl propyl ketone, butyrolactone, tetrahydrofuran, cyclohexanone, N-methyl pyrrolidone or mixtures thereof.
Claim 35
Dependent Claim
27 words
The method of claim 23 wherein composition (I) also contains (D) from about 0.1% to about 5% by weight of at least one solid particulate inorganic filler.
Claim 36
Dependent Claim
83 words
A composition comprising a mixture of (A) from about 5% to about 60% by weight of at least one water-insoluble polymer selected from ABS, PVC, CPVC or mixtures thereof; (B) from about 1% to about 60% by weight of at least one imidized acrylic polymer containing at least about 5% by weight of glutarimide groups; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B) .
Claim 37
Dependent Claim
83 words
A composition comprising a mixture of (A) from about 5% to about 60% by weight of at least one water-insoluble polymer selected from ABS, PVC, CPVC or mixtures thereof; (B) from about 1% to about 60% by weight of at least one imidized acrylic polymer containing at least about 5% by weight of glutarimide groups; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B) .
Claim 38
Dependent Claim
29 words
The composition of claim 34 containing from about 5% to about 30% by weight of polymer (A) and from about 1% to about 30% by weight of polymer (B).
Claim 39
Dependent Claim
15 words
The composition of claim 34 wherein (A) is PVC or CPVC, or a mixture thereof.
Claim 40
Dependent Claim
40 words
The composition of claim 34 wherein the glutarimide groups present in copolymer (B) are characterized by the formula ##STR9## wherein R 1 , R 2 and R 3 are each independently hydrogen or lower alkyl, aryl, alkaryl or aralkyl groups.
Claim 41
Dependent Claim
29 words
The composition of claim 37 wherein R 1 and R 2 are methyl groups and R 3 is an alkyl group containing from 1 to about 4 carbon atoms.
Claim 42
Dependent Claim
12 words
The composition of claim 38 wherein R 3 is a methyl group.
Claim 43
Dependent Claim
24 words
The composition of claim 34 also containing (D) from about 0.1% to about 5% by weight of at least one solid particulate inorganic filler.
Claim 44
Dependent Claim
96 words
A composition comprising a mixture of (A) from about 5% to about 60% by weight of at least one water-insoluble polymer selected from ABS, PVC, CPVC or mixtures thereof; (B) from about 1% to about 60% by weight of at least one imide-containing acrylic polymer which is a copolymer of an acrylic or methacrylic ester and an imide compound selected from maleimide, N-alkylmaleimide, N-cycloalkylmaleimide, N-arylmaleimide, or a mixture thereof; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B).
Claim 45
Dependent Claim
96 words
A composition comprising a mixture of (A) from about 5% to about 60% by weight of at least one water-insoluble polymer selected from ABS, PVC, CPVC or mixtures thereof; (B) from about 1% to about 60% by weight of at least one imide-containing acrylic polymer which is a copolymer of an acrylic or methacrylic ester and an imide compound selected from maleimide, N-alkylmaleimide, N-cycloalkylmaleimide, N-arylmaleimide, or a mixture thereof; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B).
Claim 46
Dependent Claim
29 words
The composition of claim 41 comprising from about 5% to about 30% by weight of polymer (A) and from about 1% to about 30% by weight of polymer (B).
Claim 47
Dependent Claim
16 words
The composition of claim 41 wherein the polymer (B) is a copolymer of methylmethacrylate and N-cyclohexylmaleimide.
Claim 48
Dependent Claim
24 words
The composition of claim 41 also containing (D) from about 0.1% to about 5% by weight of at least one solid inorganic particulate filler.
Claim 49
Independent Claim
141 words
A method of adhesively bonding or welding a first plastic surface to a second plastic surface which comprises the steps of: (I) applying to the first surface or second surface or both surfaces, a composition which is free of hollow microspheres and comprises a mixture of (A) from about 5% to about 60% by weight of water-insoluble CPVC; (B) from about 1% to about 60% by weight of at least one additional water-insoluble polymer selected from acrylic polymers, vinyl aromatic polymers and vinyl pyrrolidone polymers; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B); (II) contacting the first surface with the second surface; and (III) allowing the adhesive composition to form a bond or weld between the first surface and the second surface.
Claim 50
Independent Claim
141 words
A method of adhesively bonding or welding a first plastic surface to a second plastic surface which comprises the steps of: (I) applying to the first surface or second surface or both surfaces, a composition which is free of hollow microspheres and comprises a mixture of (A) from about 5% to about 60% by weight of water-insoluble CPVC; (B) from about 1% to about 60% by weight of at least one additional water-insoluble polymer selected from acrylic polymers, vinyl aromatic polymers and vinyl pyrrolidone polymers; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B); (II) contacting the first surface with the second surface; and (III) allowing the adhesive composition to form a bond or weld between the first surface and the second surface.
Claim 51
Dependent Claim
13 words
The method of claim 45 wherein the polymer (B) is an acrylic polymer.
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