摘要:
There are provided piperidine derivatives having the formula ##STR1## wherein R represents a hydrogen atom or a C.sub.1 -C.sub.3 group, and R.sup.2 and R.sup.3 represent a hydrogen atom or taken together, form ##STR2## There is also provided a method for producing the above compounds which comprises reacting a tricetonamine derivative represented by the formula ##STR3## wherein R has the same meaning as described above, or its salt with sorbitol.The subject piperdine derivatives are useful as stabilizers for preventing the deterioration of polymers by light.
摘要:
A stabilized resin composition comprising a resin, a piperidine derivative represented by the formula (III) ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl group having 1 to 3 carbom atoms; R.sub.2 is a hydrogen atom or an alkyl group having from 1 to 2 carbon atoms; and R.sub.3 and R.sub.4 are each independently an alkyl group having 1 to 12 carbon atoms, a phenol-type antioxidant and a sulfur-containing antioxidant. The composition simultaneously meets heat resistance, oxidation resistance and light resistance requirements.
摘要翻译:一种稳定的树脂组合物,其包含树脂,由式(III)表示的哌啶衍生物(III),其中R 1是氢原子或具有1至3个碳原子的烷基; R2是氢原子或具有1至2个碳原子的烷基; R 3和R 4各自独立地为具有1〜12个碳原子的烷基,酚型抗氧化剂和含硫抗氧化剂。 该组合物同时满足耐热性,抗氧化性和耐光性要求。
摘要:
A stabilizer for synthetic resins containing as an effective component a mixture comprising a phenol type compound (I) represented by the formula (I), ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.3 alkyl group, and at least one sulfur type compound (II) selected from the group consisting of compounds represented by the formula (II-1), ##STR2## wherein R.sub.2 represents a C.sub.4 -C.sub.20 alkyl group, and compounds represented by the formula (II-2), ##STR3## wherein R.sub.3 represents a C.sub.3 -C.sub.18 alkyl group, and R.sub.4 and R.sub.5 independently represent a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, the weight ratio of phenol type compound (I) to sulfur type one (II) being 1 to 0.5-15.
摘要:
Polyolefin resins are thermally stabilized and are also stabilized against yellowing from nitrogen oxide gases by incorporating 3,9-bis[2- 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy -1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane.
摘要:
Polyurethanes are stabilized against yellowing by incorporating a phenolic type compound represented by the general formula (I) ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.3 alkyl group and at least one member selected from a benzotriazole type light stabilizer and a hindered amine type stabilizer.
摘要:
Polyacetal resin compositions are stabilized to heat, oxygen and light by incorporation a phenolic type compound represented by the formula ##STR1##
摘要:
A novel stabilizing mixture composed of 1 1,3,5-tris 2-[3-(3-t-butyl-4-hydroxy-5-methyl-phenyl)-propionyloxyl] ethyl isocyanuric acid (I) and at least one sulfur-containing compound (II) selected from compounds represented by the general formulas (II-1) and (II-2): ##STR1## wherein R.sub.1 is an alkyl group having 4 to 20 carbon atoms, and ##STR2## wherein R.sub.2 is an alkyl group having 3 to 18 carbon atoms, and R.sub.3 and R.sub.4 each independently is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, is useful as a stabilizer for synthetic resins.
摘要:
The present invention relates to a piperidine derivative represented by the general formula (I), ##STR1## wherein R.sub.1 is a uni- or divalent carboxylic acid residue, R.sub.2 is a hydrogen atom or a C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.18 acyl group, l is an integer of 1 to 3 and n is 1 or 2,its production and a stabilizer for organic substances containing it as an effective ingredient.
摘要:
A styrene polymer is stabilized by incorporating into said styrene polymer(A) a hindered piperidine compound represented by the formula ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms,R.sub.2 is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, andR.sub.3 and R.sub.4 are each independently an alkyl group having 1 to 4 carbon atoms; and(B) a benzotriazole compound selected from the group consisting of 2-(2-hydroxy-5-methylphenyl)benzotriazole and 2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole.
摘要:
A stabilizer for synthetic resins containing as an effective ingredient a hindered piperidine compound represented by the general formula: ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.18 alkyl group, R.sub.2 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, n represents an integer of 1 to 12, and C.sub.n H.sub.2n represents a straight-chain or branched alkylene group.
摘要翻译:含有作为有效成分的由通式表示的受阻哌啶化合物的合成树脂稳定剂:其中R1表示C1-C18烷基,R2表示氢原子或C1-C4烷基,n表示整数 为1〜12,C n H 2n为直链或支链亚烷基。