The B. F. Goodrich Company

Noveon IP Holdings Corp.

Carl Duane Weber

John Ta-Yuan Lai

Carole Angele Lepilleur

Deborah S Filla

Zbigniew R Hardt

David Richard Egan

Mary B Lattimer

A toughener comprising a trithiocarbonate polymer having an epoxy end group is described which is utilized with various thermosettable polymers such as epoxy, polyurethane, and the like. A toughened composition is made by curing the thermosettable polymer and the toughener utilizing various curing agents.

S,S'-bis-(&#x3b1;, &#x3b1;&#x2032;&#x2014;disubstituted&#x2014;&#x3b1;&#x2033;&#x2014;acetic acid)&#x2014;trithiocarbonates and polymers thereof for toughening thermosetting resins

Reinforcing fabrics or cords, particularly those made from adhesive activated (AA) polyester yarn, or non-adhesive activated (non-AA) polyester yarn, or aramid yarn, maybe coated in a first of two dips in a two-step (double-dip) process, or more preferably in a single-step (single-dip) process, with an adhesive dispersion comprising a solid finely divided reversibly blocked polyisocyanate (RBP), having a majority of its primary particles smaller than 1 micron in average diameter, when the RBP is held in suspension as a substantially homogeneous dispersion with the aid of a hydrocarbyl disperser. The RBP is so held with less agitation than is required to produce a vortex in the dispersion. There is no 'flaking' on the fabric after it is dried at a temperature higher than 250.degree. F. for less than about 3 minutes, and heat-set at a temperature above that at which the RBP is unblocked. Vulcanized rubber goods reinforced with the coated and cured fabric or cord, characteristically fail in cohesive rubber failure.

Preparation of fabric for bonding to rubber

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Copley, OH, United States of America

Carl Duane Weber