Asymmetrical benzotriazolylphenols
US5292890A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 1993 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | May 5, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D249/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided are asymmetrical, ultraviolet stabilizers which are hydroxyphenyl benzotriazolylphenol compounds of the formula: ##STR1## wherein: R.sub.1 is C.sub.1 to C.sub.18 alkyl, C.sub.6 to C.sub.10 aryl, C.sub.7 to C.sub.16 arylalkyl, C.sub.1 to C.sub.12 alkoxy, C.sub.6 to C.sub.10 aryloxy, C.sub.7 to C.sub.16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl; PA1 R.sub.2 is C.sub.1 to C.sub.18 alkyl, C.sub.6 to C.sub.10 aryl, C.sub.7 to C.sub.16 arylalkyl, C.sub.1 to C.sub.12 alkoxy, C.sub.6 to C.sub.10 aryloxy, C.sub.7 to C.sub.16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl; PA1 R.sub.1 is different from R.sub.2 ; and PA1 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.