Invention Grant
- Patent Title: Titanium hydride catalyzed polyester polycondensation
- Patent Title (中): 钛金属催化聚酯聚合物
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Application No.: US3781245DApplication Date: 1972-03-10
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Publication No.: US3781245APublication Date: 1973-12-25
- Inventor: ITABASHI Y , SAITO S , SEKI M
- Applicant: KANEBO LTD
- Assignee: Kanebo Ltd
- Current Assignee: Kanebo Ltd
- Priority: JP7812268 1968-10-25; JP7812368 1968-10-25
- Main IPC: C08G63/82
- IPC: C08G63/82 ; C08G63/85 ; C08G17/015
Abstract:
POLYALKYLENE TEREPHTHALATES AND POLYESTERS CONSISTING MAINLY OF THE POLYALKYLENE TEREPHTHALATE ARE PRODUCED EASILY AND CHEAPLY BY USING TITANIUM HYDRIDE HAVING A LOW HYDROGENATION DEGREE OR A MIXTURE OF METALLIC TITANIUM AND STOICHIOMETRIC TITANIUM HYDRIDE AS A CATALYST. THE THUS OBTAINED POLYESTERS ARE SUBSTANTIALLY COLORLESS AND HAVE AN EVEN COLOR TONE BETWEEN LOTS.
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