Dialkyl sulfosuccinate compositions, method of making, and method of use

    公开(公告)号:US10022328B2

    公开(公告)日:2018-07-17

    申请号:US15046648

    申请日:2016-02-18

    Abstract: A particulate solid composition comprises a blend of dialkyl sulfosuccinate and a water-soluble polymer. The water-soluble polymer can be a cellulose ether, a polysaccharide, a polyvinyl alcohol homopolymer or copolymer, a polyvinyl pyrrolidone homopolymer or copolymer, a polyvinyl caprolactam polymer or copolymer, a poly(meth)acrylate, a poly(alkylene oxide) graft copolymer, or a combination thereof. The particulate solid composition is free flowing, water-soluble, and dissolves rapidly in water. It can be made by drying a solution of dialkyl sulfosuccinate and a water-soluble polymer. The particulate solid composition can be mixed with organic substances having low water solubility, for example a generic, a biologic, a biosimilar, an excipient, a nutraceutical, a medical diagnostic agent, an agricultural chemical, or a combination thereof, to form water-soluble compositions.

    Modified amine curing agents, their preparation and use in curable compositions

    公开(公告)号:US10011679B2

    公开(公告)日:2018-07-03

    申请号:US14953738

    申请日:2015-11-30

    CPC classification number: C08G59/5033 C07C211/50 C08J5/24 C08J2363/00 C08K5/18

    Abstract: A method for producing a modified form of an aromatic amine compound represented by the following structure I: where A is an amine group —NHR, R is independently selected from hydrogen, linear and branched alkyl groups having 1 to 6 carbon atoms, preferably A is NH2; X is a halogen selected from Cl, Br, F, I, and At, or hydrogen (H). The method includes heating the aromatic amine compound, in its initial crystalline form, to a temperature above its melting point in order to obtain a molten material, then cooling the molten material to a temperature below the melting point of the crystalline compound so as to produce an amorphous, glassy form of the aromatic amine compound. The modified aromatic amine compound is suitable as a curing agent in resin compositions that are used for fabricating fiber-reinforced composites.

    OIL FREE CRYSTAL GROWTH MODIFIERS FOR THE BAYER PROCESS

    公开(公告)号:US20180072583A1

    公开(公告)日:2018-03-15

    申请号:US15696203

    申请日:2017-09-06

    CPC classification number: C01F7/34 C01F7/02 C01F7/08 C01F7/145

    Abstract: Disclosed herein are methods of producing alumina trihydrate crystals from an alumina trihydrate recovery process stream wherein an aqueous emulsion comprising a crystal growth modifier, which is at least one of an acyclic anhydride or an alkyl or alkenyl succinic anhydride, is added to the alumina trihydrate recovery process stream, wherein the aqueous emulsion is substantially free of mineral oils. The method provides a decrease in percentage of alumina trihydrate crystals having a volume average diameter of less than about 45 micrometers compared to the percentage of alumina trihydrate crystals produced in the absence of the crystal growth modifier. The process does not require the addition of a defoamer/anti-foam agent in order to control foam generated in the process.

    Process for making benzoxazines
    47.
    发明授权

    公开(公告)号:US09902706B2

    公开(公告)日:2018-02-27

    申请号:US14919186

    申请日:2015-10-21

    Abstract: A synthesis process for making a benzoxazine compound containing at least one benzoxazine unit from aromatic amine containing at least one primary amino group, at least one phenolic compound with at least one ortho-hydrogen, and alkyl formcel. In one embodiment, the aromatic amine is reacted with alkyl formcel to generate an alkoxymethyl intermediate compound. Subsequently, the intermediate compound is reacted with a phenol to generate the benzoxazine compound. In another embodiment, the benzoxazine compound is formed by reacting aromatic amine with alkyl formcel and phenol in one reaction step. Also disclosed is a method for isolating the alkoxymethyl compound formed by reacting aromatic amine with alkyl formcel. The isolated alkoxymethyl compound is useful as a reactant in a subsequent reaction.

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