A - Human Necessities – 62 – B
Patent
A - Human Necessities
62
B
A62B 18/08 (2006.01) A61M 16/06 (2006.01)
Patent
CA 2612368
A method for preparing an aromatic chloroformate comprising, introducing a mixture of at least one aromatic hydroxy 1 compound, phosgene, at least one solvent, and at least one organic base into a flow reactor to obtain a unidirectionally flowing reaction mixture. The unidirectionally flowing reaction mixture is maintained at a temperature between about 00C and about 6O0C to produce a single product stream comprising an aromatic chlorof ormate . In another aspect a method for preparing a copolycarbonate . The method comprises reacting a dihydroxy aromatic compound under interfacial conditions with phosgene and the aromatic chlorof ormate .
L'invention concerne un système (40) permettant d'ajuster un masque de distribution de gaz (14). Ce système comprend une base (12), un bras (72) raccordé pivotant à la base, et un élément intermédiaire (78) raccordé coulissant à la base et au bras. Le bras comprend une première partie filetée (258), et l'élément intermédiaire comprend une deuxième partie filetée (82) raccordée à la première partie filetée. La rotation de la deuxième partie filetée par rapport à la première partie filetée permet de faire coulisser l'élément intermédiaire le long du bras et par rapport à la base de façon que le bras pivote par rapport à la base.
Brown Dave
Debeers James
Holverson Erik
Kumar Shiv
Lee Ngee
Nellcor Puritan Bennett Incorporated
Smart & Biggar
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