Hexahydropyrimidines as anti-oxidants in natural and synthetic r

Details Hexahydropyrimidines as anti-oxidants in natural and synthetic r Hexahydropyrimidines as anti-oxidants in natural and synthetic r

1976-06-01

1978-08-01

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260814, 544231, 544242, 544253, C08K 534, C07D23902, C07D23906, C07D23970

Patent

active

041042492

ABSTRACT:
This invention relates to the use of hexahydropyrimidines (HHP) as anti-oxidants for elastic materials such as rubber.
The preferred hexahydropyrimidines contain at least one cycloalkylene or substituted cycloalkylene group and most preferably three cycloalkylene groups as illustrated by 2,2,4,4-dipentamethylene-5,6-tetramethylene hexahydropyrimidine.

REFERENCES:
patent: 2525855 (1950-10-01), Bergmann
patent: 3248243 (1966-04-01), Hodge et al.
patent: 3277045 (1966-10-01), Bonvicini et al.
patent: 3904625 (1975-09-01), Oude Alink
patent: 3943134 (1976-03-01), Kajiyama et al.

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