Adhesive-coated multifilament yarn of an aromatic polyamide...

Details Adhesive-coated multifilament yarn of an aromatic polyamide... Adhesive-coated multifilament yarn of an aromatic polyamide...

B - Operations, Transporting

29

D

117/25

B29D 30/40 (2006.01) C08J 5/06 (2006.01) D01F 11/08 (2006.01)

Patent

CA 1215594

ABSTRACT A multifilament yarn of an aromatic polyamide, in particular poly-p phenylene terephthalamide, is provided with an adhesive coating of a cured epoxy compound, the yarn having a free epoxide content not higher than 10 mmoles/kg. The yarn is made by spinning a solution of an aromatic polyamide into a coagulation bath and subjecting the resulting filaments to the subsequent steps of washing, applying a curable epoxy compound and one or more alkaline curing agents, curing and winding the yarn thus treated into a package. The resulting yarn can be processed into a rein- forcing element for, e.g., tyres in a one-step dipping process. A cord made from the yarn displays an improved resorcinol-formaldehyde-latex dip pickup.

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