POLYMERIZABLE COMPOSITIONS CONTAINING SALTS OF BARBITURIC ACID DERIVATIVES
申请人:HECHT REINHOLD
公开号:US20120270962A1
公开(公告)日:2012-10-25
This invention relates to polymerizable compositions comprising a salt of a barbituric acid derivative. The compositions are typically shelf-life stable and may be polymerized through mixing of an acidic component with the salt of a barbituric acid derivative.
α-tertiary primary amines via photocatalytic radicalcoupling of native C(sp3)–H substrates with N-unsubstituted ketimines is reported. LiBr was used as a hydrogen atom transfer reagent to cleave C(sp3)–H bonds to get alkyl radicals. The in situ-generated HBr can then serve as a Bronsted acid to activate N-unsubstituted ketimines readily for single-electron reduction to deliver α-amino radicals. As a consequence
Alpha-olefin polymerization catalyst, process for producing catalyst component and process for polymerizing alpha-olefins
申请人:Standard Oil Company
公开号:EP0015645A1
公开(公告)日:1980-09-17
Catalyst for the stereospecific polymerization of alpha-olefins of 3 or more carbon atoms comprising an organoaluminium compound and a component prepared from halogen-containing compound of titanium(IV), organic electron donor, and a pretreatment product of components comprising magnesium alcoholate, Group II or IIIA metal alkyl, and optionally, one or more pretreatment modifiers such as a mineral acid or anhydride of sulfur, organometallic chalcogenide derivative of hydrogen sulfide, organic acid or organic acid ester. Preferably, the product obtained from such materials is contacted with liquid Lewis acid and mechanically activated prior to polymerization use.
Polymerizable compositions containing salts of barbituric acid derivatives
申请人:3M Innovative Properties Company
公开号:EP1881010A1
公开(公告)日:2008-01-23
This invention relates to polymerizable compositions comprising a salt of a barbituric acid derivative. The compositions are typically shelf-life stable and may be polymerized through mixing of an acidic component with the salt of a barbituric acid derivative.