Single Electron Transfer in Michael Induced Ring Closure reactions
作者:H.M. Walborsky、M. Topolski
DOI:10.1016/s0040-4039(00)61538-1
日期:1993.11
Substituted cyclopropylether 3 is readily available from γ-bromoalkylidene malonate 2 via a Michael Induced Ring Closure (MIRC) reaction with sodium methoxide. SingleElectronTransfer mechanism is suggested for the key cyclization step to account for the observed high reactivity of a tertiary halide, phosphonium salt and nitro compound.
POLYURETHANE ADHESIVE FOR BATTERY PACKAGING MATERIAL, BATTERY PACKAGING MATERIAL, BATTERY CONTAINER, AND BATTERY
申请人:TOYO INK SC HOLDINGS CO., LTD.
公开号:US20150380695A1
公开(公告)日:2015-12-31
An adhesive with which a battery packaging material capable of maintaining a strong adhesive strength even after a long-term endurance test and having an excellent moldability can be formed is provided. A polyurethane adhesive for a battery packaging material according to the present invention includes a main agent and a curing agent, in which the main agent contains an acrylic polyol (A) having a number-average molecular weight of 10,000 to 100,000 and a hydroxyl value of 1 to 100 mgKOH/g, and an equivalent ratio [NCO]/[OH] of an isocyanate group derived from an aromatic polyisocyanate (B) contained in the curing agent to a hydroxyl group derived from the acrylic polyol (A) is 10 to 30.
Optical element and optical resin composition for the preparation thereof
申请人:KONICA CORPORATION
公开号:EP0090558A1
公开(公告)日:1983-10-05
An optical element prepared by an injection molding, a compression molding or the like, comprises an optical resin composition consisting essentially of a polymer selected from the group consisting of a copolymer of a cyclohexyl methacrylate with at least one other a methyl methacrylate and a copolymer of a methylcyclohexyl methacrylate with at least one other ethyl methacrylate, the element having invariable surface evenness, high resistibility against heat and impact, low birefringence and the like as its native characteristics.
Sustained-release formulation comprising a hydrophobic polymer system
申请人:BAUSCH & LOMB INCORPORATED
公开号:EP0219207A2
公开(公告)日:1987-04-22
A sustained-release polymeric hydrogel dosage form useful for topical, systemic or transdermal administration of a medicinal agent comprising a cross-linked, polymerized hydrophobic polymer, a cross-linking agent, an optional hydrophilic polymer and said medicinal agent in a therapeutically effective amount.
Polymers for imparting light resistance to fibers, highly light-resistant fibers, and process for producing the fibers
申请人:NIPPON SHOKUBAI CO., LTD.
公开号:EP1067223A1
公开(公告)日:2001-01-10
A polymer for imparting light resistance to fibers is prepared by radical polymerizing a monomer composition including a specific ultraviolet stabilizable monomer and/or ultraviolet absorptive monomer. A highly light resistant fiber includes the light resistance imparting polymer inside or on the surface of the fiber. The polymer can impart a satisfactory light resistance to fibers over a long time, and the fiber is highly resistant to light.