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1.发明授权Separation and purification of acrylic acid from acetic acid by solvent extraction and azeotropic distillation with a two component solvent-entrainer system 失效通过溶剂萃取和AZOOTROPIC蒸馏法分离和纯化乙酸，用两种组分溶剂 - 制备系统
公开(公告)号：US3433831A
公开(公告)日：1969-03-18
申请号：US3433831D
申请日：1966-06-29
Applicant: ASAHI CHEMICAL IND
Inventor： YOMIYAMA AKIRA , KATO TSUNEYUKI , AOSHIMA ATSUSHI , KAWANISHI TOKUICHIRO
CPC classification number: C07C51/46 , Y10S203/22 , C07C57/04
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公开(公告)号：US3446840A
公开(公告)日：1969-05-27
申请号：US3446840D
申请日：1966-02-24
Applicant: ASAHI CHEMICAL IND
Inventor： KATO TSUNEYUKI , AOSHIMA ATSUSHI , KUBOTA YASUHIRO , MATSUMURA KENJI
CPC classification number: C07C45/35 , B01J27/192 , C07C51/252 , C07C47/22 , C07C57/04
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公开(公告)号：US3494987A
公开(公告)日：1970-02-10
申请号：US3494987D
申请日：1967-12-05
Applicant: ASAHI CHEMICAL IND
Inventor： IOKA AKIRA , KATO TSUNEYUKI , TOYODA YUTAKA
CPC classification number: C08J3/122
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公开(公告)号：US3627733A
公开(公告)日：1971-12-14
申请号：US3627733D
申请日：1967-12-05
Applicant: ASAHI CHEMICAL IND
Inventor： IOKA AKIRA , KATO TSUNEYUKI , TOYODA YUTAKA
CPC classification number: C08J3/122
Abstract: A method for particulating a thermoplastic polyester which has a solubility parameter in water of at least 10, and which is insoluble in water at the boiling point of water at normal pressure, such as polyethylene terephthalate, said method comprising heating a mass of the polyester in an autoclave solely in the presence of water up to the temperature that is lower than the melting point of the polyester to dissolve said thermoplastic polyester in the water and cooling or spraying through a nozzle the contents of the autoclave to produce a powder of the polyester.
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