Preparation of fabric for bonding to rubber

Details Preparation of fabric for bonding to rubber Preparation of fabric for bonding to rubber

1982-10-08

1984-10-16

Jacobs, Lewis T.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524380, 524389, 524507, 524591, 524875, C08K 506, C08K 541

Patent

active

044776195

ABSTRACT:
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.

REFERENCES:
patent: 3325333 (1967-06-01), Kigane et al.
patent: 3464878 (1969-09-01), Schwarz
patent: 3642553 (1972-02-01), Georges
patent: 3855168 (1974-12-01), Ozeki et al.
patent: 3933677 (1976-01-01), Aufdermarsh
patent: 3997592 (1976-12-01), Aufdermarsh

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