Patent ID: 9255184
Filing Date: 2016-02-09
CPC Classification: B01F,C08G,C08J

Claim Text:
1. A process for the synthesis of a amino silicone emulsion comprising (i) amino silicone polymeric fluid of viscosity of at least 50000 cps to upto 2 Mio cps at 25° C. with an amine number of up to 0.12 mg of KOH per gm of the polymer obtained of hydrolyzed amino silane solution having hydrolyzed amino silane oligomer free of alkoxy group in its alpha omega position, and free of any crosslinked silicone polymers or any other type of amino silane or siloxane and involving essentially linear propagation of the difunctional unit of the siloxane molecule, (ii) non-ionic and optionally (iii) cationic emulsifiers and said emulsion having a particle size of upto 150 micron comprising the steps of: to yield hydrolyzed amino silane solution having hydrolyzed amino silane oligomer free of alkoxy groups in its alpha omega position comprising the steps of: (I) dissolving the silane in an organic solvent in the concentration range of upto 20%; (II) adding water in a stoichiometric amount half mole of ‘b’ in the silane and in controlled amount in nitrogen atmosphere in a temperature range of 50-130° C. to split the alkoxy group completely from silane molecule; and (III) distilling out the alcohol from the reaction mixture, cooling the reaction mixture and obtaining the said hydrolyzed silane solution thereof and (b) involving said hydrolyzed amino silane solution having hydrolyzed amino silane oligomer free of alkoxy groups in its alpha omega position in an amount of 0.5 to 4% by wt. of the reaction mixture to control the amine number to upto 0.12 mg of KOH per gram of the polymer for producing said amino silicone polymeric fluid therefrom, which is free of any crosslinked silicone polymers or any other type of amino silane or siloxane and involving essentially linear propagation of the difunctional unit of the siloxane molecule;