| 摘要 |
<p>Novel hydroxylamine derivatives and their use as stabilizers Benzylhydroxylamine derivatives of formula I (I) wherein n is 1, 2, 3 or 4; R1 is alkyl of 1 to 36 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, aralkyl of 7 to 9 carbon atoms or said aralkyl substituted by alkyl of 1 to 36 carbon atoms or by -COOT1 where T1 is alkyl of 1 to 36 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, aralkyl of 7 to 9 carbon atoms or said aralkyl substituted by alkyl of 1 to 36 carbon atoms or is hydrogen, an alkali metal or an ammonium cation; when n is 1, R2 and R1 are identical or different and R2 has the same meanings as listed above for R1 or is hydrogen, an alkali metal or an ammonium cation; when n is 2, R2 is alkylene of 2 to 12 carbon atoms, cycloalkylene of 6 to 10 carbon atoms, arylene of 6 to 10 carbon atoms, alkylenearylenealkylene of 8 to 10 carbon atoms or , or R2 is an alkaline earth metal, when n is 3, R2 is alkanetriyl of 3 to 6 carbon atoms, or or when n is 4, R2 is alkanetetrayl of 4 to 6 carbon atoms are effective in stabilizing organic materials, in particular polyolefins, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.</p> |
