Glycoluril derivatives as antioxidants, and processes for their production
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0078142A2
公开(公告)日:1983-05-04
An acetylene carbamide derivative is of the general formula (I):
wherein each A is
wherein R1 is hydrogen or C1-4 alkyl, and X is A or hydrogen.
Five tetrakis and five tris specific compounds are named. The derivatives can be produced from an acetylene carbamide
by reaction with a p-hydroxybenzyl alcohol, a dialkyldithiocarbamate, or formaldehyde and a phenol.
The derivatives (1) are useful in an amount of 0.001 to 10% by weight as stabilizers against deterioration by light or oxygen of organic substances such as polymers, rubbers and petroleum products. They may be used together with a sulfur or phosphorus-containing antioxidant or a hindered amine light stabilizer.
炔烃酰胺衍生物的通式为(I):其中每个 A 是 R1 是氢或 C1-4 烷基,X 是 A 或氢。 五种四烷基和五种三烷基特定化合物被命名。 这些衍生物可以由炔烃酰胺与对羟基苯甲醇、二烷基二硫代氨基甲酸酯或甲醛和苯酚反应制得。 衍生物(1)的用量为 0.001 至 10%(按重量计),可作为稳定剂,防止聚合物、橡胶和石油产品等有机物受光或氧的影响而变质。 它们可与含硫或磷的抗氧化剂或受阻胺光稳定剂一起使用。
US4448915A
申请人:——
公开号:US4448915A
公开(公告)日:1984-05-15
p-Hydroxybenzylierung von Carbanionen mit Chinonmethid-liefernden Verbindungen
作者:Andreas Schmidt、Heimo Brunetti
DOI:10.1002/hlca.19760590218
日期:1976.3.10
p-Hydroxybenzylation of Carbanions with Quinonemethide Precursors.