Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
72 words
An anaerobically curable adhesive sealant composition which is self-emulsifiable upon mixing with water and comprising at least one anaerobically curable monomer, at least one surfactant and a free radical initiator in an amount sufficient to initiate cure of the composition in the substantial absence of oxygen but insufficient to initiate cure thereof in the presence of oxygen characterised in that the surfactant is a surfactant monomer co-curable with the anaerobically curable monomer.
Claim 2
Dependent Claim
72 words
An anaerobically curable adhesive sealant composition which is self-emulsifiable upon mixing with water and comprising at least one anaerobically curable monomer, at least one surfactant and a free radical initiator in an amount sufficient to initiate cure of the composition in the substantial absence of oxygen but insufficient to initiate cure thereof in the presence of oxygen characterised in that the surfactant is a surfactant monomer co-curable with the anaerobically curable monomer.
Claim 3
Dependent Claim
17 words
A composition as claimed in Claim 1, characterised in that the surfactant monomer is itself anaerobically curable.
Claim 4
Dependent Claim
35 words
A composition as claimed in Claim 1 or 2, characterised in that the surfactant monomer comprises the reaction product of a surfactant containing an active hydrogen atom with a vinyl monomer containing an isocyanate group.
Claim 5
Dependent Claim
16 words
A composition as claimed in Claim 3, characterised in that the isocyanate-containing monomer is isocyanatoethyl methacrylate.
Claim 6
Dependent Claim
54 words
A composition as claimed in Claim 1 or 2, characterised in that the surfactant monomer has the general formula: wherein R 1 is H or lower alkyl; R 2 is C 1-6 alkylene or R 3 is H or lower alkyl; R L is a lipophilic group selected from alkyls, alkylphenols or polypropylene oxi.des.
Claim 7
Dependent Claim
23 words
A composition as claimed in claim 1 or 2, characterised in that the surfactant monomer is a methacrylate ester of a polyethoxylated nonylphenol.
Claim 8
Dependent Claim
25 words
A composition as claimed in any of claims 1 to 6, characterised in that the surfactant monomer has an HLB number from 8 to 18.
Claim 9
Dependent Claim
83 words
A composition as claimed in any of Claims 1 to 7, characterised in that the anaerobically curable monomer, has the formula: wherein R 5 represents hydrogen, lower alkyl of from 1 to 4 carbon atoms, hydroxy alkyl of from 1 to 4 carbon atoms, or R 4 is hydrogen, halogen or lower alkyl of from 1 to 4 carbon atoms; R 6 is hydrogen, hydroxyl, or m is 0 to 12; n is equal to at least 1; and-p is 0 or 1.
Claim 10
Dependent Claim
23 words
A composition as claimed in any of claims 1 to 8, characterised in that the composition additionally contains an accelerator of anaerobic polymerization.
Claim 11
Dependent Claim
19 words
A composition as claimed in claim 9, characterised in that the accelerator is a sulfimide or a hydrazine derivative.
Claim 12
Dependent Claim
59 words
A process for impregnating and sealing a porous article comprising the steps of: (a) impregnating the article with a self-emulsifying anaerobically curable composition; (b) washing the surface of the article with water; and (c) permitting the composition to cure, characterised in that the self-emulsifying anaerobically curable composition is a composition as claimed in any of claims 1 to 10.
Claim 13
Dependent Claim
37 words
A process as claimed in Claim 11 characterised in that the article surface is treated with a surface activator selected from amine-aldehyde condensation products, aromatic tertiary amines, sulfur containing free radical accelerators and organic transition metal compounds.