发明名称 |
3,4-Dihydro-2H-benzopyran derivatives, a method of producing them, a method of using them as stabilizers for organic materials, and organic compositions containing such stabilizers |
摘要 |
There is provided a class of novel 3,4-dihydro-2H-benzopyran derivatives which either have excellent inhibitory activity against unfavorable effects of heat, light and oxidative factors or are of use as precursors of compounds having such activity, and methods for producing these derivatives. Also provided are methods of using such 3,4-dihydro-2H-benzopyran derivatives as stabilizers for organic materials sensitive to heat, light or/and oxidative factors, and organic compositions containing such stabilizers.
|
申请公布号 |
US4523024(A) |
申请公布日期 |
1985.06.11 |
申请号 |
US19830552068 |
申请日期 |
1983.11.15 |
申请人 |
KURARAY CO., LTD. |
发明人 |
SHIONO, MANZO;FUJITA, YOSHIJI;NISHIDA, TAKASHI |
分类号 |
C07D311/72;C07D311/92;C08K5/1545;(IPC1-7):C07D311/72 |
主分类号 |
C07D311/72 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|