摘要:
Ester and amides having the formula ##STR1## wherein R, R.sup.1 and R.sup.2 are independently lower alkyl or cycloalkyl groups, R.sup.3 is hydrogen, alkyl, cycloalkyl, alkylene, phenyl, phenyl substituted by alkyl groups, alkylthioethyl, thiobis-alkylene, alkyleneoxyalkylene, polyoxyalkylene or a polyvalent cyclic or acyclic hydrocarbon radical, R.sup.4 is hydrogen, lower alkyl, cycloalkyl, R.sup.5 is hydrogen, alkyl, phenyl, phenyl substituted by alkyl groups, alkylene, a polyvalent cyclic or acyclic hydrocarbon radical or alkyleneoxy-alkylene, A is lower alkylene, m is 1 to 4 and n is 1 to 6.The esters are prepared by usual esterification procedures from a suitable alcohol and an acid of the formula III ##STR2## or an acid halide or acid anhydride thereof. The higher alkyl esters can also be prepared from the lower alkyl ester, especially the methyl ester, by transesterification with a higher alkanol or polyol.The amides are prepared by usual amidation procedures by reacting a carboxylic acid of formula III, an acid chloride, anhydride or a lower alkyl ester thereof with the appropriate amine.The nitriles corresponding to acids of formula III are prepared as well as some malonate esters derived having the formula V. ##STR3## The compounds are useful as stabilizers of organic materials, especially polyolefins, which deteriorate upon exposure to light and heat.
摘要:
Benzoyloxybenzoates having the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are lower alkyl or cycloalkyl,X is oxygen or sulfur, andR.sup.5 is alkyl, aryl, alkaryl or hydrogenAre useful as stabilizers of organic materials such as polyolefins.
摘要:
Ester and amides having the formula ##SPC1##Wherein R, R.sup.1 and R.sup.2 are independently lower alkyl or cycloalkyl groups, R.sup.3 is hydrogen, alkyl, cycloalkyl, alkylene, phenyl, phenyl substituted by alkyl groups, alkylthioethyl, thiobis-alkylene, alkyleneoxyalkylene, polyoxyalkylene or a polyvalent cyclic or acyclic hydrocarbon radical, R.sup.4 is hydrogen, lower alkyl, cycloalkyl, R.sup.5 is hydrogen, alkyl, phenyl, phenyl substituted by alkyl groups, alkylene, a polyvalent cyclic or acyclic hydrocarbon radical or alkyleneoxyalkylene, A is lower alkylene, m is 1 to 4 and n is 1 to 6.The esters are prepared by usual esterification procedures from a suitable alcohol and an acid of the formula III ##SPC2##or an acid halide or acid anhydride thereof. The higher alkyl esters can also be prepared from the lower alkyl ester, especially the methyl ester, by transesterification with a higher alkanol or polyol.The amides are prepared by usual amidation procedures by reacting a carboxylic acid of formula III, an acid chloride, anhydride or a lower alkyl ester thereof with the appropriate amine.The nitriles corresponding to acids of formula III are prepared as well as some malonate esters derived having the formula V. ##SPC3##The compounds are useful as stabilizers or organic materials, especially polyolefins, which deteriorate upon exposure to light and heat.
摘要:
The compounds are trialkylsubstituted hydroxybenzylphosphonates and phosphinates having the formula ##SPC1##Wherein R, R.sup.1 and R.sup.2 are independently lower alkyl or cycloalkyl groups, R.sup.3 is alkyl, alkyl substituted with one halogen atom, phenyl, phenyl substituted with alkyl groups, alkoxy, alkoxy substituted with one halogen group, phenoxy, phenoxy substituted with alkyl groups, alkylthioethoxy, alkylpolyoxyalkylenoxy, R.sup.4 is alkyl, alkylsubstituted with one halogen atom, cycloalkyl, phenyl, phenyl substituted with alkyl groups alkylthioethyl, thiobis-alkylene, alkyleneoxyalkylene, polyoxyalkylene, alkylpolyoxyalkylene, alkylene, polyvalent cyclic or acyclic hydrocarbon radical, R.sup. 5 and R.sup. 6 are independently hydrogen, alkyl of 1 to 12 carbon atoms, R.sup.6 may also be the group Ic ##SPC2##Or together R.sup.5 and R.sup.6 represent the group Id ##SPC3##R.sup.7 is hydrogen, alkyl or phenyl, A is lower alkylene and n is 1 to 4.These compounds are usually prepared by reacting the trialkylsubstituted hydroxybenzyl or hydroxyphenylalkyl halide with the appropriate trialkyl or triaryl phosphite or appropriate substituted phosphonite.The compounds are useful as stabilizers of organic materials subject to oxidative, thermal and photochemical degradation.
摘要:
The compounds are trialkylsubstituted hydroxyphenylalkanephosphinates and phosphonates having the formula ##SPC1##Wherein R, R.sup.1 and R.sup.2 are independently lower alkyl or cycloalkyl groups, R.sup.3 is alkyl, alkyl substituted with one halogen atom, phenyl, phenyl substituted with alkyl groups, alkoxy, alkoxy substituted with one halogen groups, phenoxy, phenoxy substituted with alkyl groups, alkylthioethoxy, alkyloxalkylenoxy, R.sup.4 is alkyl, alkyll substituted with one halogen atom, cycloalkyl, phenyl, phenyl substituted with alkyl groups, alkylthioethyl, thiobisalkylene, alkylene, polyvalent cyclic or acyclic hydrocarbon radical, A is lower alkylene and n is 1 to 4.These compounds are usually prepared by reacting the trialkylsubstituted hydroxybenzyl or hydroxyphenylalkyl halide with the appropriate trialkyl or triaryl phosphite or appropriate substituted phosphinite.The compounds are useful as stabilizers of organic materials subject to oxidative, thermal and UV light deterioration.