| 摘要 |
1532709 Stabilizers for polymers; triphosphite esters HOECHST AG 28 May 1976 [30 May 1975] 22414/76 Heading C3K [Also in Division C2] Organic polymers, preferably chlorinated polymers and polyolefines are stabilized by phosphorus compounds of Formula I where A, B and C independently are (i) a radical of Formula II or III or or (ii) an optionally substituted aryl, cycloaliphatic, or aliphatic hydrocarbon group; Rand R<SP>1</SP> independently are H or an optionally substituted aryl, cycloaliphatic or aliphatic hydrocarbon group the sum of the C atoms in R and R<SP>1</SP> not exceeding 60; X is a straight chain aliphatic hydrocarbon group; at least one of A, B and C is as (i) above and the total C atoms in A, B and C is at least 10; or a mixture of compounds of Formula I above. In the examples, polyvinyl chloride and polypropylene are stabilized. |
