Adhesion of glass fibers to rubber
AssigneeThe General Tire & Rubber Company
InventorOtto C. Elmer
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Abstract
An aqueous alkaline dispersion of a rubbery vinyl pyridine copolymer and a water soluble, heat reactable o-cresol-formaldehyde-resorcinol resin, in certain amounts, is useful in forming an adhesive for bonding glass fiber reinforcing elements or cords to rubber compounds or stocks. After dipping the glass fiber cord in the one-step adhesive dip, the coated cord is heated to d ry it and heat cure or heat set the adhesive on the cord. Thereafter, the adhesive containing glass fiber cord is combined or laminated (calendered) with a curable rubber compound and the resulting assembly is cured to form a composite in which the glass fiber cord is bonded to the rubber by means of said adhesive.
Claims10
A composition of matter consisting essentially of an aqueous alkaline dispersion of 100 parts by weight of a rubbery vinyl pyridine copolymer, from about 8 to 75 parts by weight of a water soluble, heat reactable o-cresol-formaldehyde-resorcinol resin,
- and from about 250 to 1100 parts by weight of water, the mol ratio of the o-cresol to the resorcinol being from about 1:1 to 1:5 and the mols of formaldehyde being in excess of the total mols of the o-cresol and resorcinol in the resin.
An aqueous alkaline solution of water soluble, heat reactable o-cresol-formaldehyde-resorcinol resin where the mol ratio of the o-cresol to the resorcinol is from about 1:1 to 1:5 and where the mols of formaldehyde are in excess of the total mols of the o-cresol and resorcinol in the resin.
Dependencies are inferred from the claim text.