138370-37-3Relevant articles and documents
Phosphites and their production and use
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, (2008/06/13)
Phosphites represented by the general formula (I): STR1 wherein R1, R2, R4 and R5 independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an alkylcycloalkyl group having 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms or a phenyl group; R3 and R6 independently represent a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; X1 is a dihydric alcohol residue, wherein HO--X1 --OH defines the corresponding dihydric alcohol from which residue X1, is obtained; and X2 is a direct bond or an alkylene group having 1 to 8 carbon atoms; and the phosphites are useful as stabilizers for organic materials.
Process for preparing substituted 2,2'-methylene-bis-[6-(2H-benzotriazol-2-yl)-4-hydrocarbyl-phenols]
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, (2008/06/13)
A method is described for preparing compounds of Formula I and Formula II: STR1 R1 is an alkyl group of one to twelve carbon atoms or a cycloalkyl group of five to eight carbons, X is chloro or hydrogen, and R2 is an alkoxy group having one to twelve carbons. In accordance with the method: (a) a bis(dialkylamino)methane is formed, preferably by reacting a dialkylamine of the formula HNR3 R4 (wherein R3 and R4 are independently alkyl groups having three or more carbons) and a solid formaldehyde material to produce the corresponding bis(dialkylamino)methane, (b) a monomer of Formula III or IV STR2 in which R1 is an alkyl group of one to twelve carbons or a cycloalkyl group of five to eight carbons, X is chloro or hydrogen and R2 is an alkoxy group having one to twelve carbon atoms, is mixed with an alkaline catalyst with heating at a temperature high enough to drive off the liquid formed in the reaction, (c) the product of steps (a) and (b) are combined and stirred at a temperature sufficient to drive the reaction for six to fourteen hours, and (d) thereafter the resulting compound of Formula I is collected.
