Hormonal plant growth regulator
AssigneeChinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
InventorsJozsef Szejtli, Zsuzsanna Budai, Magda Tetenyi nee Erdosi, Gabriella Pap nee Imrenyi
Life of this patent
Estimating the term…
Abstract
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.
Claims10
An inclusion complex of 2-chloroethylphosphonic acid formed with .alpha.-, .beta.- and/or .gamma.-cyclodextrin.
An inclusion complex of 2-chloroethylphosphonic acid and .alpha.-cyclodextrin containing 10 to 30% by weight of 2-chloroethylphosphonic acid.
An inclusion complex of 2-chloroethylphosphonic acid and .beta.-cyclodextrin containing 10 to 30% of 2-chloroethylphosphonic acid.
An inclusion complex of 2-chloroethylphosphonic acid and .gamma.-cyclodextrin containing 10 to 30% by weight of 2-chloroethylphosphonic acid.
A process for the preparation of crystalline inclusion complexes of 2-chloroethylphosphonic acid which comprises reacting 2-chloroethylphosphonic acid with .alpha.-, .beta.- and/or .gamma.-cyclodextrin or a mixture of one or more of the said cyclodextrins formed with linear dextrins and/or partially decomposed starch.
A plant growth regulating composition comprising as active ingredient an inclusion complex of .alpha.-, .beta.- and/or .gamma.-cyclodextrin and 2-chloroethylphosphonic acid containing 10 to 30% by weight of 2-chloroethylphosphonic acid, and water as diluent.
A plant growth regulating method which comprises using as active ingredient an inclusion complex of 2-chloroethylphosphonic acid formed with an .alpha.-, .beta.- and/or .gamma.-cyclodextrin.
Dependencies are inferred from the claim text.