Tsuei Alexander C. (Woodbury MN) Mitra Smarajit (West St. Paul MN)
출원인 / 주소
Minnesota Mining and Manufacturing (St. Paul MN 02)
인용정보
피인용 횟수 :
25인용 특허 :
0
초록▼
A method for microencapsulating quaternary ammonium salts by interfacial polymerization. The polar component comprises a quaternary ammonium salt, glycerine, triethyleneglycol diamine, a C 4-10 straight or branched aliphatic compound having two primary amine functionalities, and a C 4-10 straight or
A method for microencapsulating quaternary ammonium salts by interfacial polymerization. The polar component comprises a quaternary ammonium salt, glycerine, triethyleneglycol diamine, a C 4-10 straight or branched aliphatic compound having two primary amine functionalities, and a C 4-10 straight or branched aliphatic compound having at least three primary amine functionalities. The glycerine-immiscible oil component comprises mineral oil, an aliphatic polyisocyanate and a surfactant. The mole equivalent ratios of primary amine to isocyanate in this reaction is about 0.01-3:1. Microcapsules made by this method are unique and provide surprising benefits in durability, elasticity and barrier properties in resistance to leaching of the microcapsule fill material.
대표청구항▼
A method for microencapsulating quaternary ammonium salts by interfacial polymerization, which comprises admixing a) a polar component comprising i) a quaternary ammonium salt, or mixtures thereof; ii) glycerine iii) triethyleneglycol diamine iv) a C 4-10 straight or branched aliphatic compound havi
A method for microencapsulating quaternary ammonium salts by interfacial polymerization, which comprises admixing a) a polar component comprising i) a quaternary ammonium salt, or mixtures thereof; ii) glycerine iii) triethyleneglycol diamine iv) a C 4-10 straight or branched aliphatic compound having two primary amine functionalities selected from the group consisting of 1,2-diaminoethane; 1,3-diaminopropane; 1,2-diaminopropane; 1,3-diamino-2-hydroxypropane; 1,4-diaminobutane; 1,3-diaminobutane; 1,5-diaminopentane; 1,3-diaminopentane; 1,6-diamino-n-hexane; 2-methylpentamethylenediamine; 1,7-diaminoheptane; 1,8-diaminooctane; 1,9-diaminononane; 1,10-diaminodecane; 1,12-diaminododecane; diaminocyclohexanes; bis(4-aminocyclohexyl)methane; and 1,8-diamino-p-methane, or mixtures thereof; v) a C 4-10 straight or branched aliphatic compound having at least three primary amine functionalities, said compound selected from the group consisting of tris(2-aminoethyl)amine, (tris)amino-1,6 hexamethylene biuret adduct and N,N′-di(6-aminohexyl)-(6-aminohexylamino)succinamide and polyoxypropyleneamine, or mixtures thereof; and b) a glycerine-immiscible oil component comprising vi) mineral oil vii) an aliphatic polyisocyanate that is soluble in the glycerine immiscible oil component, or mixtures thereof; viii) a surfactant, or mixtures thereof; wherein each of said ingredients iii), iv) and v) are present at mole equivalent ratios of primary amine to isocyanate of about 0.01-3:1; said admixing being conducted under conditions effective to form a polar liquid-in-oil emulsion, wherein said polar component is dispersed in the form of microscopic emulsion droplets in a glycerine-immiscible oil component continuous phase, and thereby surrounding each of said droplets with a solid capsule wall.
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이 특허를 인용한 특허 (25)
Haggquist, Gregory W., Active particle-enhanced membrane and methods for making and using the same.
Work Dale E. ; Hart Ronald L. ; Virgallito David R., Method for microencapsulating water-soluble or water-dispersible or water-sensitive materials in an organic continuous p.
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