摘要:
N,N',N"-tris((2,2,6,6-tetramethyl-4-piperidyl)triazinyl) undecane triamines are provided having the formula: wherein: X is selected from the group consisting of in which: R is selected from the group consisting of hydrogen; oxyl O'; alkyl having from one to about eighteen carbon atoms; hydroxyalkyl having from two to about eight carbon atoms; epoxyalkyl having from three to about eight carbon atoms; alkaryl having from seven to about twelve carbon atoms; and acyl having from one to about eight carbon atoms; Y is 0 or NR 2 ; R, is alkyl having from one to about six carbon atoms; and R 2 is hydrogen or alkyl having from one to about eighteen carbon atoms; as well as stabilizer compositions and stabilized synthetic polymer compositions containing the same having improved resistance to deterioration upon exposure to light.
摘要:
Alkylidene bisphenol phosphites and phosphates having 2,2,6,6-tetramethyl piperidinyl groups are provided having the formula: wherein: R, is alkyl having from one to about twelve carbon atoms; R 2 , R 3 and R 4 are each selected from the group consisting of hydrogen and alkyl having from one to about twelve carbon atoms; m is 0 or 1; n is 0 or 1; X is selected from the group consisting of wherein: R 5 is selected from the group consisting of hydrogen oxyl O, alkyl having from one to about twelve carbon atoms; aryl alkyl having from seven to about eighteen carbon atoms: 2,3-epoxypropyl, acyl having from one to about eight carbon atoms and in which R s is selected from the group consisting of hydrogen, alkyl having from one to about twelve carbon atoms and phenyl, and Y, is selected from the group consisting of hydrogen; acyl having from one to about twelve carbon atoms; and Z, is selected from the group consisting of -CH and wherein R 7 is alkyl having from one to about twelve carbon atoms: and wherein: R 6 is selected from the group consisting of hydrogen, alkyl having from one to about twelve carbon atoms and phenyl; and Z 2 is selected from the group consisting of >C=O; -CH-O-Y 2 ; in which R 7 is alkyl having from one to about twelve carbon atoms; R 8 is alkylene having from one to about eight carbon atoms and Y 2 is selected from the group consisting of hydrogen and acyl having from one to about eight carbon atoms.
摘要:
Polyhydric alcohol ethers of 2,2,6,6-tetramethyl-4-piperidone ketals are provided, having the formula: wherein: R is selected from the group consisting of hydrogen, alkyl having from one to about eight carbon atoms, and alkyleneoxyalkylene, each alkylene having from two to about eight carbon atoms; R, is selected from the group consisting of hydrogen and alkyl having from one to about four carbon atoms; R 2 is selected from the group consisting of hydrogen; oxyl 0'; alkyl, hydroxy alkyl and epoxyalkyl having from one to about eighteen carbon atoms; acyl having from one to about eighteen carbon atoms; cycloalkyl having from three to about eighteen carbon atoms; phenyl; phenalkyl and alkylphenyl having from seven to about twenty-four carbon atoms; and n is a number from 2 to 6 as well as synthetic resin compositions having an improved resistance to deterioration and containing such compounds.
摘要:
Synthetic resin compositions of improved resistance to deterioration by heat and light are provided containing a 2,2,6,6-tetramethyl piperidyl ether having the formula: wherein: R, is selected from the group consisting of X is selected from the group consisting of methylene -CH 2 , carbonyl C=O, > CH-O-R, and Y is oxy - where Z is alkylene or thioalkylene having from two to about ten carbon atoms; or phenylene having from six to about ten carbon atoms; and n is a number from 1 to 50; R 2 and R 3 ; or R 2 and R 4 can be taken together to form and when n is 1 and Y is -O-, R 2 and R 3 or R 2 and R 4 can be connected together as a C-C linkage to form a cyclic ring, or
The other symbols have the meanings given in the description.
摘要:
A radiation sensitizer of the present invention contains a particular nitrotriazole compound as an active ingredient and accelerates inactivation of intractable hypoxic cells in a malignant tumor by irradiation.