Synthetic rubber mix

Details Synthetic rubber mix Synthetic rubber mix

1976-04-12

1978-07-18

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 23H, 260 233, 260 237B, 260 237R, 260 237M, 260 28P, 260 285R, 260 285AS, 260 285B, 260 336AQ, 260 458NW, 260 459QB, C08L 9100

Patent

active

041014782

ABSTRACT:
The present invention relates to a rubber mix based on synthetic rubbers and containing vulcanizing agents, organic accelerators, vulcanization promotors, fillers, dispersing agents, plasticizers and an alkylphenolamine resin prepared by condensation of aminomethylating agents with a mixture consisting of 70-97% by weight of monoalkylphenols with the aklyls being C.sub.4 -C.sub.12 and 3 to 30% by weight of dialkylphenols with the alkyls being C.sub.4 -C.sub.12 at a temperature within the range of from 120.degree. to 180.degree. C; said alkylphenolamine resin corresponds to the formula: ##STR1## wherein R is a C.sub.4 -C.sub.12 alkyl; R' is hydrogen or substituted hydroxybenzyl; R" is hydrogen, a C.sub.4 -C.sub.12 alkyl, N(dimethyl) methylenamine; n = 0.1-5.0; m = 0 - 4; z = 0 - 0.5
And has a molecular weight within the range of from 500 to 2,000, a softening point of from 50.degree. to 130.degree. C and a nitrogen content of from 0.4 to 5%. The components are incorporated in said rubber mix in the following proportions (parts by weight):

REFERENCES:
patent: 3189572 (1965-06-01), Cramp
patent: 3325429 (1967-06-01), Harris
patent: 3708554 (1973-01-01), Oguri et al.
patent: 3738948 (1973-06-01), Dunnom
patent: 3763104 (1973-10-01), Buchanan
patent: 3962156 (1976-06-01), Harrop

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