Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1983-12-21
1986-11-18
Boland, Lois E.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152565, 156910, 4284755, 57250, 57902, B60C 900, D02G 348
Patent
active
046230114
ABSTRACT:
A tire-reinforcing dip cord composed of nylon 6 and/or nylon 66 fiber is described. The dip cord has (1) a strength at break of at least 8.2 g/d, (2) an elongation of at least 18% under a load of 8 g/d, (3) a gradient not larger than 0.75 in the load-elongation curve immediately before break, and (4) a cord diameter variation ratio (D/D.sub.o) (D=cord diameter under a load of 450 g and D.sub.o =cord diameter under no load) not larger than 0.65. The dip cord is prepared by treating a nylon 6 and/or nylon 66 cord yarn with an adhesive wherein at least one of the following processes (i) and (ii) is employed: (i) the adhesive treatment is carried out under elongation of at least 3%, and (ii) as the adhesive, a liquid mixture of a resorcinol/formaldehyde (R/F) condensate and a rubber latex is used, in which at least 20 wt. % of the condensate has a R/F molar ratio of 1/1.9-1/1.
REFERENCES:
patent: 3342762 (1967-09-01), Crovatt
patent: 3545911 (1970-12-01), Papero et al.
patent: 3575761 (1971-04-01), Funsch et al.
patent: 3610311 (1971-10-01), Simons
patent: 3614864 (1971-10-01), Daimler et al.
Asahi Kasei Kogyo Kabushiki Kaisha
Boland Lois E.
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