Enhanced adhesion of rubber to reinforcing materials through the use of phenolic esters
AssigneeThe Goodyear Tire & Rubber Company
InventorsDavid A. Benko, Syed K. Mowdood, Paul H. Sandstrom, Walter H. Waddell, III, Lawson G. Wideman
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Abstract
There is disclosed a method for adhering rubber to reinforcing materials which comprises embedding a textile fiber or metal reinforcing material in a vulcanizable rubber composition comprising rubber, a vulcanizing agent, reinforcement, a methylene donor, and a phenolic ester as a methylene acceptor.
Claims19
A vulcanizable rubber composition comprising rubber, a vulcanizing agent and the reaction product of (A) a methylene donor and (B) a methylene acceptor selected from at least one compound of the general structural formula (I):
- ##STR21## wherein R may be the same or different radicals selected from the group consisting of hydrogen, halogen, alkyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms, and hydroxyl:
- wherein R' is an aromatic radical the structural formula:
- ##STR22## wherein R is defined as above;
- or a radical of the structural formula:
- ##STR23##
A composition for the adhesion of a textile fiber or a steel cord to rubber which consists essentially of (1) a vulcanizable natural or synthetic rubber, (2) a sulfur vulcanizing agent, (3) from about 0.5 to about 50 parts by weight per 100 parts by weight of rubber of a methylene donor, and (4) from about 0.5 to about 50 parts by weight per 100 parts by weight of rubber of a phenolic ester methylene acceptor compound represented by the formula:
- ##STR25## wherein each R represents, individually, hydrogen, halogen, alkyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms or hydroxyl;
- and wherein R' is an aromatic radical the structural formula:
- ##STR26## wherein R is defined as above;
- or a radical of the structural formula:
- ##STR27##
A vulcanizable rubber composition comprising rubber, a vulcanizing agent and filler, the improvement which is characterized by incorporating into the rubber composition an effective adhesion promoting amount of (A) a methylene donor and (B) a methylene acceptor selected from at least one compound of the structural formula:
- ##STR28## wherein R may be the same or different radicals selected from the group consisting of hydrogen, halogen, alkyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms, and hydroxyl:
- wherein R' is an aromatic radical the structural formula:
- ##STR29## wherein R is defined as above;
- or a radical of the structural formula:
- ##STR30##
A vulcanizable rubber composition comprising rubber, a vulcanizing agent and the reaction product of (a) a methylene donor and (B) resorcinol monobenzoate.
A vulcanizable rubber composition comprising rubber, a vulcanizing agent and the reaction product of (a) a methylene donor and (B) a methylene acceptor selected from resorcinol rosinate or phloroglucinol mono-rosinate.
Dependencies are inferred from the claim text.