US 5,683,536 AGranted

Method of bonding PVC

AssigneeLoctite Corporation

InventorBrendan J. Kneafsey

Life of this patent

Estimating the term…

Abstract

One-part, anaerobically storage stable, air activated polymerizable compositions containing methylmethacrylate monomer having a polymeric filler therein, especially polymethylmethacrylate, are found to be especially useful for bonding PVC.

Claims3

Dependent claims

A method of bonding a PVC substrate to another substrate of the same or different material, said method comprising the steps of:

(a) coating at least one of the substrates with a one-part, air-activatable, polymerizable composition comprising:
(i) one or more free-radically polymerizable monomers, at least one of which is methylmethacrylate in which is dissolved a polymeric filler, and
(ii) an activator system for effective polymerization of the free-radically polymerizable monomer, said activator system comprising at least one compound which is auto-oxidisable when exposed to air and which, after exposure to air, is capable of effecting polymerization of the free-radically polymerizable monomer, said auto-oxidisable compound being of a formula which includes the structure II:
##STR10## wherein x is 0 or 1, provided that:
when x=o, the nitrogen atom in structure II is not bonded to a second nitrogen atom and when x=1, the >C--C<
moiety resulting therefrom does not form part of a phenyl ring;
and R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5, which may be the same or different, are independently selected from the group consisting of hydrogen, and hydrocarbyl, heterohydrocarbyl, and silyl groups, a mono-cyclic or a poly-cyclic ring structure formed from any two of the groups R.sub.1 to R.sub.2, said activator system comprising said auto-oxidisable compound alone or in combination with a weak acid, provided that the composition does not contain a peroxide, or a precursor thereof which produces peroxide in the absence of air, or any ingredient which is a significant source of radicals in the absence of air;
said activator system having been combined with said polymerizable monomer under anaerobic conditions;
and said polymerizable composition being maintained under anaerobic conditions prior to its application to the substrate;
(b) exposing the coated surface to oxygen for sufficient time to activate polymerization of the composition;
and
(c) bringing together the two substrates.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/404,223Filed 15 Mar 1995 · continuation in part
Priority: IE 0741/916 Mar 1991
Granted: 4 Nov 1997
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

C08J 5/124
Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives: using…
C09J 4/00
Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon
C08J 2327/06
Containing chlorine atoms: homopolymers or copolymers of vinyl chloride
C08J
Working-up

Family

Serial847,157Parent of this continuation · filed 5 Mar 1992
Serial173,267Parent of this continuation-in-part · filed 23 Dec 1993
US 5,523,347 AParent of this continuation-in-part
US 5,683,536 AThis patent

From the US filing history. Foreign family members aren’t listed.

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Abstract

A method of bonding a PVC substrate to another substrate of the same or different material, said method comprising the steps of:

(a) coating at least one of the substrates with a one-part, air-activatable, polymerizable composition comprising:
(i) one or more free-radically polymerizable monomers, at least one of which is methylmethacrylate in which is dissolved a polymeric filler, and
(ii) an activator system for effective polymerization of the free-radically polymerizable monomer, said activator system comprising at least one compound which is auto-oxidisable when exposed to air and which, after exposure to air, is capable of effecting polymerization of the free-radically polymerizable monomer, said auto-oxidisable compound being of a formula which includes the structure II:
##STR10## wherein x is 0 or 1, provided that:
when x=o, the nitrogen atom in structure II is not bonded to a second nitrogen atom and when x=1, the >C--C<
moiety resulting therefrom does not form part of a phenyl ring;
and R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5, which may be the same or different, are independently selected from the group consisting of hydrogen, and hydrocarbyl, heterohydrocarbyl, and silyl groups, a mono-cyclic or a poly-cyclic ring structure formed from any two of the groups R.sub.1 to R.sub.2, said activator system comprising said auto-oxidisable compound alone or in combination with a weak acid, provided that the composition does not contain a peroxide, or a precursor thereof which produces peroxide in the absence of air, or any ingredient which is a significant source of radicals in the absence of air;
said activator system having been combined with said polymerizable monomer under anaerobic conditions;
and said polymerizable composition being maintained under anaerobic conditions prior to its application to the substrate;
(b) exposing the coated surface to oxygen for sufficient time to activate polymerization of the composition;
and
(c) bringing together the two substrates.

9 more elements

Facts

Application

08/404,223Filed 15 Mar 1995 · continuation in part

Priority

IE 0741/916 Mar 1991

Granted

4 Nov 1997

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

C08J 5/124
Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives: using…
C09J 4/00
Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon
C08J 2327/06
Containing chlorine atoms: homopolymers or copolymers of vinyl chloride
C08J
Working-up