| 摘要 |
Provided are asymmetrical, ultraviolet stabilizers which are hydroxyphenyl benzotriazolylphenol compounds of the formula: (* CHEMICAL STRUCTURE *) (* CHEMICAL STRUCTURE *) wherein: R1 is C1 to C18 alkyl, C6 to C10 aryl, C7 to C16 arylalkyl, C1 to C12 alkoxy, C6 to C10 aryloxy, C7 to C16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl; R2 is C1 to C18 alkyl, C6 to C10 aryl, C7 to C16 arylalkyl, C1 to C12 alkoxy, C6 to C10 aryloxy, C7 to C16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl; R1 is different from R2; and X is selected from the group consisting of hydrogen, halogen, C1 to C12 alkyl, and C1 to C12 alkoxy. The invention also pertains to a process for their preparation and stabilized polymer blends containing the stabilizers.
|
