Coupled benzotriazole and benzophenone UV absorbers

Details Coupled benzotriazole and benzophenone UV absorbers Coupled benzotriazole and benzophenone UV absorbers

1994-05-19

1994-12-13

Morgan, Kriellion S.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C08K 53475

Patent

active

053730372

ABSTRACT:
Provided are ultraviolet stabilizers which are diphenylmethane compounds of the formula: ##STR1## wherein: R.sub.1 and R.sub.2 are independently C.sub.1 to C.sub.8 alkyl, cyclopentyl, cyclohexyl or cumyl; and X is selected from the group consisting of hydrogen, halogen, C.sub.1 to C.sub.12 alkyl and C.sub.1 to C.sub.12 alkoxy. The invention also pertains to a process for their preparation and stabilized polymer blends containing the stabilizers.

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patent: 4943637 (1990-07-01), Seino et al.
patent: 5019614 (1991-05-01), Klei
patent: 5021478 (1991-06-01), Ravichandran et al.
patent: 5099027 (1992-03-01), Vogl et al.
patent: 5104992 (1992-04-01), Fukuoka et al.

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