Hindered phenolic norbornane-2,3-dicarboximides and stabilized c

Details Hindered phenolic norbornane-2,3-dicarboximides and stabilized c Hindered phenolic norbornane-2,3-dicarboximides and stabilized c

1983-09-27

1985-04-30

Kight, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 94, 548435, 264DIG71, C08K 534

Patent

active

045145334

ABSTRACT:
##STR1## where X is 1, 2 or 3; Y is Cl or Br; R.sub.1 is tert-butyl (t-butyl) and R.sub.2 is H or lower alkyl of 1 to 4 carbons. The preferred group of compounds is where OH is at the 4 position, R.sub.1 is at the 3 position and R.sub.2 is at the 5 position of the phenyl ring. The most preferred compound is where X is 2, R.sub.1 and R.sub.2 are both t-butyl at the 3 and 5 positions of the phenyl ring and OH is at the 4 position of the phenyl ring and Y is Cl. The compounds are useful as antioxidants and flame retardants.

REFERENCES:
patent: 3906002 (1975-09-01), Stephen
patent: 3933736 (1976-01-01), Yoshikawa et al.
patent: 3978156 (1976-08-01), Parker
patent: 4001065 (1977-01-01), Penneck et al.
patent: 4015058 (1977-03-01), Schober
patent: 4045404 (1977-08-01), Stephen
patent: 4116930 (1978-09-01), Dexter et al.

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