Cyclic amidine hydroiodide for the synthesis of cyclic carbonates and cyclic dithiocarbonates from carbon dioxide or carbon disulfide under mild conditions
作者:Naoto Aoyagi、Yoshio Furusho、Takeshi Endo
DOI:10.1016/j.tet.2019.130781
日期:2019.12
Hydroiodides of amidines can catalyze the reaction of carbon dioxide and epoxides under mild conditions such as ordinary pressure and ambient temperature, and the corresponding five-membered cyclic carbonates were obtained in high yields. The reaction of epoxide with carbon disulfide was also examined under the same conditions. Detailed investigation showed that the catalytic activity was highly affected
Amidines as Intermediates in Transamidation Reactions
Trans作为转酰胺基反应的中间体
WATER-BASED VULCANIZABLE FLUORORUBBER COMPOSITION AND COATED ARTICLE
申请人:Daikin Industries, Ltd.
公开号:EP1065243A1
公开(公告)日:2001-01-03
An aqueous fluoroelastomer curable composition comprising an aqueous fluoroelastomer dispersion and a basic polyol curing agent, and an article having a coating film formed from this composition. The aqueous fluoroelastomer curable composition has a long pot life although it is a one-fluid type aqueous dispersion, and forms a cured film having sufficient strength and heat resistance at a relatively low temperature in a short time.
AQUEOUS COMPOSITION FOR VULCANIZATION OF FLUORO RUBBER AND ARTICLE COATED WITH FLUORO RUBBER
申请人:Daikin Industries, Ltd.
公开号:EP1138718A1
公开(公告)日:2001-10-04
A one-fluid type aqueous curing composition of a fluoroelastomer comprising water, a fluoroelastomer at least a part of terminal groups of which are non-functional groups, and a curing agent. This composition has a long pot-life and provides a cured film with a high strength while it contains the fluoroelastomer at a high solid content. An article coated with a coating layer formed from this aqueous curing composition, in particular, the rolls of office automation equipment, can solve the drawbacks of articles coated with a film formed from a conventional one-liquid type aqueous curing composition of a fluoroelastomer, for example, insufficient strength of the coating layer.
WATER-BASED VULCANIZABLE FLUORORUBBER COMPOSITION AND ARTICLE COATED WITH FLUORORUBBER
申请人:Daikin Industries, Ltd.
公开号:EP1167442A1
公开(公告)日:2002-01-02
An aqueous curing composition of a fluoroelastomer containing a fluoroelastomer, a fluororesin, a curing agent, which further contains a surfactant which leaves 0.3 wt. % or less of a decomposition residue after being heated at 300°C for 30 minutes and/or a polar solvent having a boiling point of 300°C or less and a surface tension of at least 30 dyne/cm at room temperature. When a coating film is formed from this aqueous composition, a large amount of the fluororesin contained therein can be bled up on the surface of the coating film. Thus, the durability and non-tackiness of the coating film can be improved.