STP1449: Influence of Trisiloxane Alkoxylate Polarity on Spreading of Methylated Oil Based Adjuvants

    Pigeon, M
    Group Manager, Analytical, Crompton Corporation, OSi Specialties Group, Tarrytown, NY

    Policello, G
    Technology Manager, Crompton Corporation, OSi Specialties Group, Tarrytown, NY

    Sun, S
    Sr. Chemist, Crompton Corporation, OSi Specialties Group, Tarrytown, NY

    Paccione, MA
    Sr. Technician, Crompton Corporation, OSi Specialties Group, Tarrytown, NY

    Koczo, K
    Project Scientist, Crompton Corporation, OSi Specialties Group, Tarrytown, NY

    Pages: 9    Published: Jan 2003


    Abstract

    The carbon chain length of the fatty acid methyl esters appears to play an important role in the spreading process of organosilicone adjuvant aqueous dispersions (80/20 blends of Methyl Ester / Silicone). Overall, spreading increases with an increase in the methyl ester chain length ranging from C9 – C18. However other factors, such as degree of saturation and emulsification properties, must be considered for their overall contribution to spreading.

    Additionally, spreading is strongly influenced by the polarity of the organosilicone adjuvant (Polarity Index as measured by HPLC). The higher the polarity, the greater the degree of spreading. Likewise, similar effects are observed with the degree of partitioning for the organosilicone adjuvant in the aqueous phase. Highly polar organosilicone adjuvants have higher partitioning in the aqueous phase, while less polar organosilicone adjuvants tend to remain predominantly in the oil phase, which makes them unavailable for spreading.

    Keywords:

    Trisiloxane alkoxylate, polarity index, methyl ester, oil concentrate, spreading


    Paper ID: STP11195S

    Committee/Subcommittee: E35.22

    DOI: 10.1520/STP11195S


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