- Water-soluble triazine xanthogen derivative and its preparation method and application
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The invention discloses a water-soluble triazine xanthic acid derivative, and a preparation method and application thereof. The invention relates to a synthetic technology and application of a water-soluble triazine derivative containing a xanthic acid group. The derivative is characterized in that the derivative has the chemical name of 2,4-bis(N,N-dihydroxyalkylamino)-6-(alkylxanthate)-1,3,5-sym-triazine, and has the structural formula shown in the specification, and in the structural formula, R1 is a C1-C2 linear or branched alkyl, and R is a C1-C5 linear or branched alkyl. The preparation method of the derivative comprises utilizing cyanuric chloride, a dialkyl alcohol amine and an alkyl xanthate as raw materials, controlling the reaction molar ratio to be 1:2:1.1, taking an alcohol as a solvent, and reacting at 60-90 DEG C for 4-6 h. The derivative can be applied to pure water, water-glycol, water-glycerin, synthetic esters, polyesters and lubricating grease as an additive, also can be combined with other aqueous lubricating additives for usage, and has good wear resistance and extreme pressure resistance, and capabilities of resisting corrosion and resisting oxidation. The method is simple in operation, high in yield and easily controllable in reaction conditions.
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Paragraph 0023-0024; 0027; 0030
(2019/03/29)
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- Block oligomers containing 2,2,6,6-tetramethyl-4-piperidyl groups as stabilizers for organic materials
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Compounds of the formula (I) in which the polydispersity +E,ovs M+EE w/+E,ovs M+EE n is 1; n is 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15; the radicals R1 are for example hydrogen or C1-C8alkyl; R2 is for example C2-C12alkylene; the radicals A are independently of one another -OR3, -N(R4)(R5) or a group of the formula R3, R4 and R5, which are identical or different, are for example hydrogen or C1-C18alkyl, or -N(R4)(R5) is additionally a group of the formula with Y being -O-, -CH2-, -CH2CH2- or >N-CH3; X is -O- or >N-R6; R6 is for example hydrogen or C1-C18alkyl; R is preferably a group of the formula and the radicals B have independently of one another one of the definitions given for A; with the proviso that in the individual recurrent units of the formula (I), each of the radicals B, R, R1 and R2 has the same or a different meaning. The indicated compounds are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.
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