摘要:
Inclusion complexes of cyclodextrin and strong inorganic oxy acids are disclosed as well as a process for the preparation of the complexes. The complexes are useful for analytical purposes, internal buffering, introducing acids into anhydrous media, substitutions or introduction of radicals, or as catalysts.
摘要:
The invention relates to new inclusion complexes of piperonyl butoxide formed with cyclodextrin.The new complex of the invention can be prepared by reacting cyclodextrin or a solution thereof formed with water and/or an organic solvent having 1-4 carbon atoms, preferably ethanol with piperonyl butoxide or a solution thereof formed with an organic solvent having 1-4 carbon atoms, preferably ethanol at a temperature between 20.degree. C. and 90.degree. C., whereby the piperonyl butoxide is used in an amount of 0.6-1.5 moles related to 1 mole of cyclodextrin.The complexes of the present invention synergize the pesticidal effect of known insecticides and fungicides to a much higher extent of known insecticides and fungicides to a much higher extent than piperonyl butoxide used per se.
摘要:
The present invention relates to new inclusion complexes of 2-chloro ethyl phosphonic acid formed with .alpha.-, .beta.- and/or .gamma.-cyclodextrin or a mixture thereof.The new inclusion complexes contain preferably 10-30% of 2-chloro ethyl phosphonic acid.The new complexes of the present invention are prepared by reacting 2-chloro ethyl phosphonic acid with .alpha.-, .beta.- and/or .gamma.-cyclodextrin or a mixture of one or more of the said cyclodextrins and linear dextrins and/or partially decomposed starch.The new inclusion complexes of the present invention can be used for the preparation of plant growth regulating compositions.