138370-37-3

Upstream product

• 1310-73-2 sodium hydroxide 
• 10333-53-6 bis-(dipropylamino)methane 
• 131-57-7 Benzophenone-3 

Relevant academic research and scientific papers

Phosphites and their production and use

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.

Piperidine compound, a process for producing the same and a stabilizer using the same

2-Methyl-3-(2,2,6,6-tetramethyl-4-piperidylamino)-N-(2,2,6,6-tetramethyl-4-piperidyl)-propionamide represented by the following formula, a process for producing the same and a stabilized organic material composition containing the same wherein the piperidine compound imparts excellent properties, such as light stability or thermal stability to the organic materials. STR1

Process for preparing substituted 2,2'-methylene-bis-[6-(2H-benzotriazol-2-yl)-4-hydrocarbyl-phenols]

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.

Process for preparing a 5,5'-methylenebis(2-hydroxy-4-alkoxybenzophenone)

A novel process is provided for preparing 5,5'-methylenebis(2-hydroxy-4-alkoxybenzophenone), comprising forming a novel 2-hydroxy-4-alkoxy-5-aminomethylbenzophenone by a reaction of a 2-hydroxy-4-alkoxybenzophenone with an amine and formaldehyde, and causing the 2-hydroxy-4-alkoxy-5-aminomethylbenzophenone to react with a 2-hydroxy-4-alkoxybenzophenone or to dimerize. Both the aminomethylhydroxyalkoxybenzophenone and the methylenebis (2-hydroxy-4-alkoxybenzophenone) which are prepared according to this invention are useful to prevent photo-degradation of organic materials, particularly as light stabilizers for synthetic resins.