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1.发明授权
公开(公告)号：US3507856A
公开(公告)日：1970-04-21
申请号：US3507856D
申请日：1967-07-19
Applicant: SNIA VISCOSA
Inventor： SICLARI FRANCESCO , MADERNO CESANO , MESSINA GIUSEPPE , HORAK EDGARDO
IPC: C07D201/16 , C07D41/06
CPC classification number: C07D201/16
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2.发明授权
公开(公告)号：US3624043A
公开(公告)日：1971-11-30
申请号：US3624043D
申请日：1968-12-16
Applicant: SNIA VISCOSA
Inventor： SICLARI FRANCESCO , MESSINA GIUSEPPE , HORAK EDGARDO
CPC classification number: C08G63/866 , B01J37/00 , B01J37/0009
Abstract: Method for the preparation of finely and evenly divided elemental antimony for use as catalyst in polyester manufacturing, wherein powdered antimony is subjected to mechanical size reduction operations, and then is dispersed in a liquid medium.
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3.发明授权Method for the production of polyesters,more particularly linear polyalkylene terephthalates,and catalyst employed therefor 失效生产聚酯的方法，更特别的线性聚亚烷基二十二烷酸酯及其所用的催化剂
公开(公告)号：US3682864A
公开(公告)日：1972-08-08
申请号：US3682864D
申请日：1970-03-16
Applicant: KANEGAFUCHI SPINNING CO LTD , SNIA VISCOSA
Inventor： SICLARI FRANCESCO , HORAK EDGARDO , ROSSO MARIO
IPC: C08G63/00 , C08G63/82 , C08G63/85 , C08G17/015
CPC classification number: C08G63/85
Abstract: A METHOD FOR THE PRODUCTION OF POLYESTERS, MORE PARTICULARLY LINEAR POLYALKYLENE TEREPHTHALATES IS DISCLOSED, WHEREIN THE POLYCONDENSATION STEP IS CARRIED OUT BY USING AS A CATALYST AN ASSOCIATION OF ELEMENTAL ANTIMONY WITH INSOLUBLE TITANIUM COMPOUNDS. TITANIUM HYDRIDE, CARBIDE, NITRIDE, BORIDE OR PHOSPHITE ARE THE PREFERRED TITANIUM COMPOUNDS. IN ADDITION TO ACCELERATING THE POLYCONDENSATION REACTION, THE CATALYST SYSTEM OF THIS INVENTION HAS NO DETRIMENTAL EFFECT OF THE WHITENESS RATING OF THE FINISHED POLYMERS.
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