发明名称 |
Prepn. of organo-tin mercapto cpds. - for use as stabilisers in chlorine-contg. polymers |
摘要 |
<p>Organo-tin mercapto cpds. are made by reaction of (A) organo-tin chlorides of formula (YCH2CH2)nSnCl4-n, (in which Y is CN, CONH2 of COOH; n is 1 or 2), and (B) chloro cpds. of formula YCH2CH2Cl. (B) is obtd. by reaction of metallic tin and/or tin chlorides with excess acrylonitrile and HCl. The prod. before or after reaction with alkali sulphides, is subjected to hydrolysis and esterification in presence of alcohols of formula ROH and/or R'(OH)m, (in which R is opt. substd. 1-18C alkyl, Aralkyl or cycloalkyl; R' is 2-6C alkylene; m is 2-6) and acids. The cpds. are stabilisers for chlorine-contg. polymers, e.g. PVC. Higher yields are obtd. by a more economic process which reduces formation of by-products, gives stabilisers of higher efficiency, and avoids use of inert organic solvents.</p> |
申请公布号 |
DE2901950(A1) |
申请公布日期 |
1979.11.08 |
申请号 |
DE19792901950 |
申请日期 |
1979.01.19 |
申请人 |
VEB CHEMIEWERK GREIZ-DOELAU |
发明人 |
HUPFER,IRMGARD,DIPL.-CHEM.;KLIMSCH,PETER,DIPL.-CHEM.;KLOEPPNER,EDGAR,DIPL.-CHEM. |
分类号 |
C07F7/22;(IPC1-7):C07F7/22 |
主分类号 |
C07F7/22 |
代理机构 |
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地址 |
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