Anaerobic adhesive composition having improved strength at elevated temperature consisting of unsaturated diacrylate monomer and maleimide additive

Claim 2

A composition curable by heat and having improved thermal properties comprising a mixture of a. a monomer selected from the group consisting of ethoxylated bisphenol-A diacrylate, ethoxylated bisphenol-A dimethacrylate, and an acrylate ester corresponding to the formula ##EQU2## wherein R represents a radical selected from the group consisting of hydrogen, lower alkyl of 1-4 carbon atoms, inclusive, hydroxy alkyl of 1-4 carbon atoms inclusive, and ##EQU3## R' is a radical selected from the group consisting of hydrogen, halogen, and lower alkyl of 1-4 carbon atoms; R" is a radical selected from the group consisting of hydrogen, --OH and ##EQU4## m is an integer equal to at least 1; n is an integer equal to at least 1; and p is 0 or 1; b. about 1 to about 5 percent by weight of the total composition of an additive selected from the group consisting of ##SPC4## wherein R and R' are selected from the group consisting of alkyl, cycloalkyl, aralkyl, alkaryl.

Claim 3

The composition of claim 1 wherein the monomer is ethoxylated bisphenol A.

Claim 4

The composition of claim 1 wherein the monomer is polyethylene glycol dimethacrylate.

Claim 5

The composition of claim 1 wherein the additive is ##SPC5##

Claim 6

A curable anaerobic adhesive sealant composition comprising a mixture of a. a monomer selected from the group consisting of ethoxylated bisphenol-A diacrylate, ethoxylated bisphenol-A dimethacrylate, and an acrylate ester corresponding to the formula ##STR7## wherein R represents a radical selected from the group consisting of hydrogen, lower alkyl of 1-4 carbon atoms, inclusive, hydroxy alkyl of 1-4 carbon atoms inclusive, and ##STR8## R' is a radical selected from the group consisting of hydrogen, halogen and lower alkyl of 1-4 carbon atoms; R" is a radical selected from the group consisting of hydrogen, --OH, and ##STR9## m is an integer equal to at least 1; n is an integer equal to at least 1; and p is 0 or 1; b. about 1 to about 50 percent by weight of the total composition of an additive selected from the group consisting of ##SPC6## wherein R and R' are selected from the group consisting of alkyl, cycloalkyl, aralkyl, alkaryl; and c. about 0.1 to about 10 percent by weight of the total composition of a peroxy initiator of free-radical polymerization, said composition being curable at room temperature upon substantial exclusion of oxygen.

Claim 7

A curable anaerobic adhesive sealant composition comprising a mixture of a. a monomer selected from the group consisting of ethoxylated bisphenol-A diacrylate, ethoxylated bisphenol-A dimethacrylate, and an acrylate ester corresponding to the formula ##STR7## wherein R represents a radical selected from the group consisting of hydrogen, lower alkyl of 1-4 carbon atoms, inclusive, hydroxy alkyl of 1-4 carbon atoms inclusive, and ##STR8## R' is a radical selected from the group consisting of hydrogen, halogen and lower alkyl of 1-4 carbon atoms; R" is a radical selected from the group consisting of hydrogen, --OH, and ##STR9## m is an integer equal to at least 1; n is an integer equal to at least 1; and p is 0 or 1; b. about 1 to about 50 percent by weight of the total composition of an additive selected from the group consisting of ##SPC6## wherein R and R' are selected from the group consisting of alkyl, cycloalkyl, aralkyl, alkaryl; and c. about 0.1 to about 10 percent by weight of the total composition of a peroxy initiator of free-radical polymerization, said composition being curable at room temperature upon substantial exclusion of oxygen.

Claim 8

The composition of claim 5 wherein the monomer is ethoxylated bisphenol A dimethacrylate.

Claim 9

The composition of claim 5 wherein the monomer is polyethylene glycol dimethacrylate.

Claim 10

The composition of claim 5 wherein the additive is ##SPC7##

Claim 11

The composition of claim 5 wherein the initiator is cumene hydroperoxide.

Claim 12

The composition of claim 5 which additionally contains about 0.1 to about 5 percent by weight of the total composition of an accelerator of anaerobic polymerization.

Claim 13

A process for providing between close-fitting, abutting surfaces, a seal having improved thermal properties comprising applying the composition of claim 1 to either of such surfaces, placing the surfaces in abutting relationship and allowing the composition to cure by application of moderate heat.

Claim 14

A process for providing between close-fitting, abutting surfaces, a seal having improved thermal properties comprising applying the composition of claim 6 to either of such surfaces, placing the surfaces in abutting relationship and allowing the composition to cure.