Showing papers in "Leather and Chemicals in 2008"

Study on Factors Affecting Viscosity of Carboxymethyl Oxidation Starch

Abstract: Leather coated with low viscous adhesion agent coated was prepared by using oxidation combined with carboxymethylationThe effect of dosage of reactant,reaction time,temperature and rotate speed of agitator on the viscosity of carboxymethyl oxidation corn starch were studiedThe results indicated that the viscosity of product decreased dramatically with the increasing of the dosage of H2O2 and catalyst,and increasing of the reaction temperature,but increased rapidly with the increasing starch dosage and rotate speed of agitatorThe dosage of borax and CH2ClCOOH have no influence on viscosityThe viscosity of product increased rapidly as the reaction time was much smaller than 60 min,and declined sharply in this rage from 60 to 180 min of time,then low after 180min

Study on Na Modification and Characterization of Rectorite

Abstract: Na modification rectorite(Na+REC)is prepared by using the calcinated rectorite from Hubei Zhongxiang Co.First the appropriate sodium agent was selected.Then,the optimum Na modification condition were seeked.Na+REC was characterized and thermal analyzed by FTIR,XRD,SEM and TG etc.The results suggest when Na-modification agent is sodium pyrophate,dispose viscosity of clay is 15wt%,the amount of sodium pyrophate is 3 %(on wt of rectorite),temperature is 60℃,time is 12h,the effect of Na-modificationis is best.The d(001)value and exfoliation degree are bigger than REC.The product is a promising absorbent for heavy metal ions and oganic ordure.

Chemical Modification and Application Development of Vegetable Tannin Extract

Abstract: The research progress of the chemical modification of vegetable tannin extract and the modified products used in the fields as the leather industry,oil exploitation,daily chemical industry,medicine,foodstuff health care,agriculture,environmental protection,etcare reviewed in the paperMeanwhile the research direction and the application prospect of vegetable tannin extract are forecasted

Investigation on the Development and Application of Green Surfactant Agent

Abstract: The current study of green surfactant agents,mainly alkyl polyglycosid surfactant agent,cellulose-based surfactant agent and ehitosan-based surfactant agent,are reviewed in this paper.And at the same time,the relative application field of the three kinds of green surfactant agents in daily chemical industry,medicine and leather industry are also included.

Research Progress in Synthesis of Rosin Surfactants

Abstract: There are four types of rosin surfactants,namely cationic rosin surfactant,anionic rosin surfactant,nonionic rosin surfactants and amphoteric rosin surfactantThe synthetic methods of the four are mainly summarized in this articleThe synthetic rosin surfactants are widely applied in agricultural production,scientific research and daily life of people,as the emulsifier,washing agent,bactericide,corrosion inhibitor,emulsion splitter,wetting agent,viscosity reducer,foaming agent,dyeing auxiliaries,antistatic agent and so onIn the end,some suggestions and prospects were given in research of rosin series surfactant,according to the requirements of the environment protection and the social development