Rubber additives derived from guayule resins and compositions co

Details Rubber additives derived from guayule resins and compositions co Rubber additives derived from guayule resins and compositions co

1981-10-19

1985-09-17

Henderson, Christopher A.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525344, 525354, 525502, 525930, C08F 1900

Patent

active

045421919

ABSTRACT:
Tackifying agents for rubber comprising at least one chemically or physically treated guayule resin fraction are disclosed. Physical treatments include vacuum deoiling, steam stripping deoiling, hexane deoiling, while chemical treatments include formaldehyde reaction, phenol/formaldehyde reaction, urea formaldehyde reaction, acid reaction and sulphur reaction. Untreated guayule resin fractions can also be used. Vulcanized and unvulcanized rubber compositions containing guayule resin derived tackifying agents as well as articles made therefrom are also disclosed.

REFERENCES:
patent: 1835365 (1931-12-01), Woodruff
Chem. Abst., 42, 7082(b), 1948.
Chem. Abst., 47, 12862(b), 1953.

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