Patents Assigned to BP Chemicals International Limited
  • Patent number: 3947615
    Abstract: Sheet moulding compound (S.M.C.) is made by impregnating glass fibre with hot polyester resin matrix containing a soluble gelling agent, e.g. sodium or potassium stearate which causes the matrix to gel on cooling.
    Type: Grant
    Filed: May 22, 1974
    Date of Patent: March 30, 1976
    Assignee: BP Chemicals International Limited
    Inventor: David Philip Fry
  • Patent number: 3944597
    Abstract: The present invention relates to novel halogenated derivatives of esters of linear C.sub.8 alcohols and aliphatic monocarboxylic acids and a process for the preparation of such compounds.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: March 16, 1976
    Assignee: BP Chemicals International Limited
    Inventor: Kenneth Rowland Dobson
  • Patent number: 3931339
    Abstract: The mineral acid catalyst is removed from the products of cumene hydroperoxide cleavage by contact with an aqueous solution of an inorganic salt and an excess of an alkali metal hydroxide or phenate in a first zone. Suitably the aqueous solution contains sodium sulphate and sodium hydroxide or phenate. The aqueous layer is removed and the organic layer contacted in a second zone with an aqueous solution comprising an inorganic salt and sufficient weak acid to decompose any phenate carried over from the first zone. Suitable weak acids are oxalic and citric acids but the preferred acid is carbonic acid formed `in situ` by passing carbondioxide into the aqueous inorganic salt solution.
    Type: Grant
    Filed: December 13, 1973
    Date of Patent: January 6, 1976
    Assignee: BP Chemicals International Limited
    Inventor: Maurice Dudley Cooke