公开(公告)号：DE3919691A1

公开(公告)日：1990-12-20

申请号：DE3919691

申请日：1989-06-16

Applicant: HOECHST AG

Inventor： SCHMAILZL GEORG DR ,  PFAHLER GERHARD DR ,  NOWY GUENTHER DR

IPC: C07D498/10 ,  C07D519/00 ,  C08G73/06 ,  C08K5/34 ,  C08K5/3432 ,  C08K5/3435 ,  C08K5/35 ,  C08K5/353 ,  C08L23/00 ,  C08L87/00 ,  C08L101/00

Abstract: Novel polymeric polyalkyl-1-oxa-diazaspirodecanes of the formula I (I) are very effective stabilizers for natural any synthetic polymers. They have very low volatility, high migration resistance and high thermal stability.

公开(公告)号：DE59010478D1

公开(公告)日：1996-10-10

申请号：DE59010478

申请日：1990-06-13

Applicant: HOECHST AG

Inventor： SCHMAILZL GEORG DR ,  PFAHLER GERHARD DR ,  NOWY GUENTHER DR

IPC: C07D498/10 ,  C07D519/00 ,  C08G73/06 ,  C08K5/34 ,  C08K5/3432 ,  C08K5/3435 ,  C08K5/35 ,  C08K5/353 ,  C08L23/00 ,  C08L87/00 ,  C08L101/00

Abstract: Novel polymeric polyalkyl-1-oxa-diazaspirodecanes of the formula I (I) are very effective stabilizers for natural any synthetic polymers. They have very low volatility, high migration resistance and high thermal stability.

公开(公告)号：AT142214T

公开(公告)日：1996-09-15

申请号：AT90111176

申请日：1990-06-13

Applicant: HOECHST AG

Inventor： SCHMAILZL GEORG DR ,  PFAHLER GERHARD DR ,  NOWY GUENTHER DR

IPC: C07D498/10 ,  C07D519/00 ,  C08G73/06 ,  C08K5/34 ,  C08K5/3432 ,  C08K5/3435 ,  C08K5/35 ,  C08K5/353 ,  C08L23/00 ,  C08L87/00 ,  C08L101/00 ,  C07D498/00

Abstract: Novel polymeric polyalkyl-1-oxa-diazaspirodecanes of the formula I (I) are very effective stabilizers for natural any synthetic polymers. They have very low volatility, high migration resistance and high thermal stability.

公开(公告)号：DE3940572A1

公开(公告)日：1991-06-20

申请号：DE3940572

申请日：1989-12-08

Applicant: HOECHST AG

Inventor： SCHMAILZL GEORG DR ,  WIEDEMANN JOSEF DR ,  PFAHLER GERHARD DR ,  NOWY GUENTHER DR

IPC: B01J31/02 ,  C07B61/00 ,  C07C67/03 ,  C07C67/343 ,  C07C69/732 ,  C08K5/13 ,  C08L23/00

Abstract: By dividing the known condensation of acetoacetic acid diol esters with phenols into two process steps, a reduction in the cost of the entire process can be achieved. Methyl acetoacetate is first condensed with a phenol and the methyl 3,3-bis(4-hydroxyalkylphenyl)butanoate formed is reacted with the desired diol in the presence of a transesterification catalyst. In this way only one acetoacetic ester is necessary for various final products. The final products are useful stabilizers for plastics, in particular polyolefins.