47221-31-8Relevant academic research and scientific papers
Multi-chromophoric azo pyridone colorants
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, (2008/06/13)
Disclosed is a compound comprising three or more moieties of the formula said moieties being bonded to a central atom, monomeric group of atoms, oligomer, or polymer. Also disclosed is a phase change ink composition comprising a phase change ink carrier a
Blocked acid catalysts
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, (2008/06/13)
Sulfonic acids blocked by reaction with glycidamides. The blocked acids are used as catalysts for resin curing systems and provide viscosity stability and pot life without significant decrease in catalytic activity in comparison with the corresponding free sulfonic acids.
Resin systems cured with blocked acid catalysts
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, (2008/06/13)
Resin systems cured with blocked acid catalysts formed by reaction of sulfonic acids with glycidamides. The blocked acids are used as catalysts and provide viscosity stability and pot life without significant decrease in catalytic activity in comparison w
Separation of monoolefins from diolefins
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, (2008/06/13)
A process and apparatus for separating monoolefins from diolefins comprising contacting a mixture of monoolefins and diolefins with a complexing agent selected from the group consisting of copper(I) salts of sulfonic acids and copper(I) salts of dialkylphosphates and a suitable hydrocarbon solvent for the complexing agent under such conditions that the monoolefins and diolefins form complexes with the complexing agent. The monoolefin complex can be separated from the diolefin complex based either on the relative solubilities of the two complexes in the hydrocarbon solvent for the complexing agent or based on the relative strengths of the two complexes.
Krafft Points of Anionic Surfactants and Their Mixtures with Special Attention to Their Applicability in Hard Water
Tsujii, Kaoru,Saito, Naoyuki,Takeuchi, Takashi
, p. 2287 - 2291 (2007/10/02)
The Krafft points of the sodium and calcium salts of typical anionic surfactants and their mixtures have been measured to examine their applicability in hard water.The pure model compounds of the linear alkylbenzene sulfonates, α-olefin sulfonates, and alkylpoly(oxyethylene) sulfates were synthesized and used for Krafft-point measurements.Among the above three types of surfactant, the alkylpoly(oxyethylene) sulfates are shown to be the best surfactant for their practical uses in hard water, since their sodium and calcium salts as well as their mixtures are readily soluble at room temperature.The Krafft point vs. composition curves observed in binary surfactant mixtures have been classified into two groups.In group I, there exists a minimum in the Krafft point at a certain composition, whereas the Krafft point varies monotonously with the composition change in group II.It is found from the composition analysis of the solid phase that both components are immiscible in group I but are completely miscible even in the solid phase in group II.The thermodynamic theory for freezing-point depression has been favorably applied to the Kraff point vs. composition curves in group I.Theoretical calculations for the Krafft point vs. composition curves (liquidus curve) and the corresponding solidus curves in group II have also been made, assuming the ideal solutions in both liquid (micellar) and solid phases.The calculated curves are in poor agreement with the observed ones probably because of the nonideality of the solution especially in the solid phase.
