Polyester fiber cord for reinforcing rubber

Abstract

A polyester fiber cord for reinforcing rubber including a polyester fiber preloaded with a polyepoxide compound; and an adhesive applied to the polyester fiber and including a resorcinol-formalin-rubber latex (A), a blocked polyisocyanate compound (B), and a halogenated phenol derivative (C), wherein a rubber latex, a material of the resorcinol-formalin-rubber latex (A) in the adhesive, contains a mixture of a chloroprene rubber latex (D) and a polybutadiene rubber latex (E) in an amount of 80 to 100 parts by mass based on 100 parts by mass of the total solids of the rubber latex, and a mixing ratio of the chloroprene rubber latex (D) to the polybutadiene rubber latex (E) ((D)/(E)) is 80/20 to 20/80 (solid content mass ratio).

1 - 11 . (canceled) 
     
     
         12 . A polyester fiber cord for reinforcing rubber comprising:
 a polyester fiber preloaded with a polyepoxide compound; and   an adhesive applied to the polyester fiber and comprising a resorcinol-formalin-rubber latex (A), a blocked polyisocyanate compound (B), and a halogenated phenol derivative (C), wherein a rubber latex, a material of the resorcinol-formalin-rubber latex (A) in the adhesive, contains a mixture of a chloroprene rubber latex (D) and a polybutadiene rubber latex (E) in an amount of 80 to 100 parts by mass based on 100 parts by mass of the total solids of the rubber latex, and a mixing ratio of the chloroprene rubber latex (D) to the polybutadiene rubber latex (E) ((D)/(E)) is 80/20 to 20/80 (solid content mass ratio).   
     
     
         13 . The polyester fiber cord according to  claim 12 , wherein the chloroprene rubber latex (D) has a surface tension of 30 to 44 mN/m and an average particle size of 50 to 200 nm. 
     
     
         14 . The polyester fiber cord according to  claim 12 , wherein the polybutadiene rubber latex (E) has an average particle size of 200 to 330 nm. 
     
     
         15 . The polyester fiber cord according to  claim 12 , wherein the polyester fiber preloaded with a polyepoxide compound has an amorphism degree of orientation (fa) of 0.45 to 0.65. 
     
     
         16 . The polyester fiber cord according to  claim 12 , obtained by a single bath process where the polyester fiber preloaded with a polyepoxide compound is provided with the adhesive and then subjected to drying/heat treatment, wherein a total stretching rate in the drying/heat treatment is −10% to −4%. 
     
     
         17 . The polyester fiber cord according to  claim 12 , wherein a resorcin-formaldehyde precondensate contained in the resorcinol-formalin-rubber latex (A) is a novolac-type condensate. 
     
     
         18 . The polyester fiber cord according to  claim 12 , wherein the adhesive satisfies:
   ( A )/( B )=5/1 to 20/1, ( A )/( C )=1/1 to 5/1   (wherein (A) represents the amount of the resorcinol-formalin-rubber latex; (B) represents the amount of the blocked polyisocyanate compound; and (C) represents the amount of the halogenated phenol derivative, the ratios both representing a blend ratio by solid content mass).   
     
     
         19 . The polyester fiber cord according to  claim 12 , wherein the deposited amount of solid content of the adhesive on the polyester fiber preloaded with a polyepoxide compound is 1 to 5% by mass based on 100% by mass of the polyester fiber preloaded with a polyepoxide compound. 
     
     
         20 . The polyester fiber cord according to  claim 12 , which is a cord for reinforcing an automotive hose. 
     
     
         21 . The polyester fiber cord according to  claim 12 , wherein in the automotive hose, at least a portion in contact with the polyester fiber cord is an ethylene-α-olefin-unconjugated diene rubber formulation. 
     
     
         22 . A method of producing a polyester fiber cord comprising providing a polyester fiber preloaded with a polyepoxide compound with an adhesive comprising a resorcinol-formalin-rubber latex (A), a blocked polyisocyanate compound (B), and a halogenated phenol derivative (C), wherein a rubber latex, a component of the adhesive, contains a mixture of a chloroprene rubber latex (D) and a polybutadiene rubber latex (E) in an amount of 80 to 100 parts by mass based on 100 parts by mass of the total solids of the rubber latex, and a mixing ratio of the chloroprene rubber latex (D) to the polybutadiene rubber latex (E) ((D)/(E)) is from 80/20 to 20/80 (solid content mass ratio). 
     
     
         23 . The polyester fiber cord according to  claim 13 , wherein the polybutadiene rubber latex (E) has an average particle size of 200 to 330 nm. 
     
     
         24 . The polyester fiber cord according to  claim 13 , wherein the polyester fiber preloaded with a polyepoxide compound has an amorphism degree of orientation (fa) of 0.45 to 0.65. 
     
     
         25 . The polyester fiber cord according to  claim 14 , wherein the polyester fiber preloaded with a polyepoxide compound has an amorphism degree of orientation (fa) of 0.45 to 0.65. 
     
     
         26 . The polyester fiber cord according to  claim 13 , obtained by a single bath process where the polyester fiber preloaded with a polyepoxide compound is provided with the adhesive and then subjected to drying/heat treatment, wherein a total stretching rate in the drying/heat treatment is −10% to −4%. 
     
     
         27 . The polyester fiber cord according to  claim 14 , obtained by a single bath process where the polyester fiber preloaded with a polyepoxide compound is provided with the adhesive and then subjected to drying/heat treatment, wherein a total stretching rate in the drying/heat treatment is −10% to −4%. 
     
     
         28 . The polyester fiber cord according to  claim 15 , obtained by a single bath process where the polyester fiber preloaded with a polyepoxide compound is provided with the adhesive and then subjected to drying/heat treatment, wherein a total stretching rate in the drying/heat treatment is −10% to −4%. 
     
     
         29 . The polyester fiber cord according to  claim 13 , wherein a resorcin-formaldehyde precondensate contained in the resorcinol-formalin-rubber latex (A) is a novolac-type condensate. 
     
     
         30 . The polyester fiber cord according to  claim 14 , wherein a resorcin-formaldehyde precondensate contained in the resorcinol-formalin-rubber latex (A) is a novolac-type condensate. 
     
     
         31 . The polyester fiber cord according to  claim 15 , wherein a resorcin-formaldehyde precondensate contained in the resorcinol-formalin-rubber latex (A) is a novolac-type condensate.