16320-20-0Relevant articles and documents
Aliphatic epoxy compound and pouring sealant prepared from same
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Paragraph 0044-0048, (2022/01/04)
The invention discloses an aliphatic epoxy compound and a pouring sealant prepared from the same. The pouring sealant comprises a cationic polymerizable compound and a cationic initiator, the cationic polymerizable compound is a combination of one or more of the group of aliphatic epoxy compounds, and the cationic initiator is sulfonium salt, phosphonium salt, quaternary ammonium salt, diazonium salt and iodonium salt of which the anion part is one of BF4 , PF6 and SbF6 . The total content of the cationic polymerizable compound in the pouring sealant is 50-98%, the total content of the cationic initiator is 0.1-5%, and the total content of the active monomer does not exceed 50%. The pouring sealant prepared from the aliphatic epoxy compound provided by the invention has lower shrinkage rate, higher glass transition temperature and better thermal stability after being cured.
Polynuclear branched tetrazole systems. 2*. New 2-(5-tetrazolyl) ethyl podands and their NH-acidity
Zubarev,Bezklubnaya,Pyartman,Trifonov,Ostrovskii
, p. 1317 - 1325 (2007/10/03)
Nine new polynuclear 2-(5-tetrazolyl)ethyl podands have been obtained by the azidation of the corresponding nitriles. Using Bjerrum distribution functions, the values of pKa1, pKa 2, pKa3, and pKa4 have been determined by a potentiometric method for 14 polynuclear tetrazoles in aqueous and aqueous methanolic solution. The found values lie in the range from 3.5 to 7.5 pH units. The overall rules and the sequence of the ionization of the spatially separated tetrazole fragments in these podand systems are discussed.
Bis(aminopropyl) arylacetonitriles and preparation thereof
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, (2008/06/13)
This invention relates to new aliphatic diamines containing cyanide groups, a process for their preparation by hydrogenation of the corresponding trinitriles and their use as chain lengthening agents in the isocyanate polyaddition process.