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    24.
    发明专利
    未知

    公开(公告)号：SE450691B

    公开(公告)日：1987-07-20

    申请号：SE8303863

    申请日：1983-07-06

    Applicant: BERGVIK KEMI AB ,  FLUIDCARBON INTERNATIONAL AB

    Inventor： LJUSBERG-WAHREN H

    IPC: B01F20060101 ,  C08G81/02 ,  C10L1/32 ,  C09F7/10 ,  C09K23/34 ,  C09K23/52 ,  C10L20060101 ,  C10L10/18 ,  B01F17/34

    Abstract: Compsns. for dispersing hydrophobic particles in water comprise esters (I) prepd. by partial esterification of (a) polymerised fatty acids, polymerised resin acids and/or opt. polymerised fatty or rosin acid derivs. with (b) polyalkylene glycols or their monoesters or monoethers, provided that (I) have a residual acid value above 3. - Specifically component (a) is esp. crude tall oil (CTO) which has been polymerised (e.g. with BF3) and opt. distd. to remove volatiles. Component (a) may also be a residue obtd. by distn. of fatty acids from animal or vegetable fats or oils, or a prod. obtd. by Diels-Alder reaction of conjugated polyunsatd. fatty or rosin acids or by reaction of fatty or rosin acids with polyfunctional alcohols and/or carboxylic acids. Component (b) is pref. a polyethylene glycol (PEG) with a molecular wt. above 600, esp. 4000-10,000. (I) may be used in an amt. of 0.01-5 (pref. 0.3-1) wt.% for dispersing coal particles in water, esp. where the coal has a particle size of 1-200 microns.

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