Trialkylamine Controlled Phenol–Formaldehyde Reaction over Clay Catalysts: Selective and Environmentally Benign Synthesis of Salicylic Aldehydes
摘要:
Substituted salicylic aldehydes 6 are synthesised in good yields and excellent selectivities by reaction of phenols 1 with formaldehyde 2 over montmorillonite KSF-Et3N as a heterogeneous and reusable catalyst. (C) 2000 Elsevier Science Ltd. All rights reserved.
Dry analytical element and method for the colorimetric determination of lithium ion
申请人:Johnson & Johnson Clinical Diagnostics, Inc.
公开号:EP0579331A1
公开(公告)日:1994-01-19
A multilayer analytical element has been prepared for use in the accurate colorimetric determination of lithium ion found in aqueous specimens. The element includes first and second reagent layers underneath a porous spreading layer. A more precise assay at longer read times of dye formation and reduced rate of background dye development are achieved because the second reagent layer contains both an aromatic phenol organic solvent and a perfluoroalkyl surfactant which were formerly included only in the first reagent layer. A 14-crown-4-ether derivative dye is used to complex with lithium ion to provide the colorimetric signal.
USE OF NATURAL PRODUCTS AND RELATED SYNTHETIC COMPOUNDS FOR THE TREATMENT OF CARDIOVASCULAR DISEASE
申请人:THE UNIVERSITY OF SYDNEY
公开号:EP0703780A1
公开(公告)日:1996-04-03
EP0703780A4
申请人:——
公开号:EP0703780A4
公开(公告)日:1998-01-07
METHOD OF ENHANCING PIT REPLICATION IN OPTICAL DISKS
申请人:General Electric Company,(a New York Corporation)
公开号:EP1508141A1
公开(公告)日:2005-02-23
Method of enhancing pit replication in optical disks
申请人:General Electric Company
公开号:US20030212241A1
公开(公告)日:2003-11-13
Polycarbonate compositions incorporating long chain alkylphenol endgroups, for example cardanol, show enhanced pit replication characteristics when molded into optical disks. The enhancement in molding performance is especially pronounced at the shortest mold cycle times tested. Thus, a blend of 75 parts by weight bisphenol A polycarbonate 92 percent encapped with phenol, and 25 parts by weight bisphenol A polycarbonate about 100 percent endcapped with cardanol showed enhanced pit replication performance in optical disk molding trials relative to the same bisphenol A polycarbonate alone and analogous blends utilizing short chain alkylphenols.