Flexibilized resorcinolic novolak resins and method of...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate

Reexamination Certificate

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C528S104000, C528S137000, C528S144000, C528S154000, C528S245000, C528S486000, C528S044000, C525S413000, C525S480000, C525S488000, C525S489000, C525S534000

Reexamination Certificate

active

10734521

ABSTRACT:
A flexibilized resorcinolic novolak resin is prepared by reacting a phenolic compound, such as resorcinol, with an unsaturated dihydroxy, an unsaturated aldehyde, an aliphatic dialdehyde, or a mixture thereof. An aldehyde (different from the unsaturated aldehyde and the aliphatic dialdehyde) is either simultaneously or subsequently added to the reaction mixture. The flexibilized resorcinolic novolak resin can be used in an adhesive composition for enhancing the adhesion between tire cords and rubber for tire applications.

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PCT Notification of Transmittal of the International Preliminary Report mailed on Feb. 16, 2005.
International Search Report, May 3, 2004, PCT/US03/39839.

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