Naturally occurring thermoplastic resins as a substitute for var

Details Naturally occurring thermoplastic resins as a substitute for var Naturally occurring thermoplastic resins as a substitute for var

1980-10-02

1982-04-13

Cockeram, H. S.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

260108, 260109, 260110, 152374, 524274, C08L 9304, C09F 100

Patent

active

043247105

ABSTRACT:
Natural occurring thermoplastic resins are used as a substitute for process oils and/or hydrocarbon resins, as well as for tackifiers, softeners, extenders, processing aids, and cure retarders, in rubber stocks, as for example, a rubber skim stock used in making a tire. The resins, which are derived from crude wood rosin, are high melting thermoplastic resins having carboxylic acid groups and are insoluble in aliphatic hydrocarbons. The source of the natural occurring resins is in ample supply as they are obtained from pine trees grown in North America. A specific type of thermoplastic resin is Vinsol, a registered trademark of Hercules Corporation.

REFERENCES:
patent: 2319959 (1943-05-01), Tierney
patent: 2508893 (1950-05-01), Sadowski et al.
patent: 3412061 (1968-11-01), Drukker
patent: 3786011 (1974-01-01), Price et al.
patent: 3862068 (1975-01-01), Russell
patent: 4147831 (1979-04-01), Baliuth
patent: 4252171 (1981-02-01), Imai et al.

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