Manufacture and use of polymeric beads

专利名称：Manufacture and use of polymeric beads发明人：Walker, John,Stockwell, John Robert申请号：EP84308085.4申请日：19841121公开号：EP0143608A2公开日：19850605

摘要：Beads comprising a polymeric matrix containing a releasable lipophiliccompound are made by precipitating the compound from solution within the matrix.Beads may be made by forming a homogeneous blend of the compound in lipophilicpolymerisable material and subjecting the blend to bead polymerisation while the blendis dispersed as beads in an aqueous medium containing hydrophilic polymerisationstabiliser. The lipophilic compound may be a behenyl ester wax inhibitor or other reagentuseful downhole or for other purposes and preferably has a relatively high melting point.The polymerisable material preferably dissolves the lipophilic compound and mayinclude acrylic acid, methacrylic acid or other hydrophilic polymerisable material.

申请人：ALLIED COLLOIDS LIMITED

地址：P.O. Box 38, Low Moor Bradford, West Yorkshire BD12 0JZ GB

国籍：GB

代理机构：Lawrence, Peter Robin Broughton

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