SUSPENSION POLYMERISATION OF STYRENE
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专利名称：SUSPENSION POLYMERISATION OF ST Y RENE
发明人：JAMES KEITH HAMBLING,JOHN MANSEL SQUIRE,COLIN TEMPLE RICHARDS
申请号：US35604 68D 申请日：19680305 公开号：US35604 68A 公开日：19710202
摘要：1,198,472. Suspension polymerization. BRITISH PETROLEUM CO. Ltd. 21 Feb., 1968 [8 March, 1967], No. 10826/67. Heading C3P. In the aqueous suspension polymerization of an olefinically unsaturated monomer, an alkyl hydroperoxide is reacted with a hydroxy acid of sulphur having reducing properties or a salt of such an acid in water, subsequently adding a suspending agent, monomer and catalyst and polymerizing. Preferred reactants are tertiary butyl hydroperoxide and sodium formaldehyde sulphoxylate and these may be reacted in water of a pH less than 7. The preferred monomer is styrene, and suitable catalysts are benzoyl peroxide, tertiary butyl perbenzoate, lauroyl peroxide, ditertiary butyl peroxide and 2-azo-bisisobutyronitrile. Preferably, the reaction temperature is 40-200‹ C. In the examples, sodium formaldehyde sulphoxylate and tertiary butyl hydroperoxide are reacted and then the following ingredients added wherein polymerization commences-water, sodium phosphates, styrene, mineral oil, calcium chloride stearic acid and benzoyl peroxide.
申请人：BRITISH PETROLEUM CO. LTD.:
专利名称：SUSPENSION POLYMERISATION OF ST Y RENE
发明人：JAMES KEITH HAMBLING,JOHN MANSEL SQUIRE,COLIN TEMPLE RICHARDS
申请号：US35604 68D 申请日：19680305 公开号：US35604 68A 公开日：19710202
摘要：1,198,472. Suspension polymerization. BRITISH PETROLEUM CO. Ltd. 21 Feb., 1968 [8 March, 1967], No. 10826/67. Heading C3P. In the aqueous suspension polymerization of an olefinically unsaturated monomer, an alkyl hydroperoxide is reacted with a hydroxy acid of sulphur having reducing properties or a salt of such an acid in water, subsequently adding a suspending agent, monomer and catalyst and polymerizing. Preferred reactants are tertiary butyl hydroperoxide and sodium formaldehyde sulphoxylate and these may be reacted in water of a pH less than 7. The preferred monomer is styrene, and suitable catalysts are benzoyl peroxide, tertiary butyl perbenzoate, lauroyl peroxide, ditertiary butyl peroxide and 2-azo-bisisobutyronitrile. Preferably, the reaction temperature is 40-200‹ C. In the examples, sodium formaldehyde sulphoxylate and tertiary butyl hydroperoxide are reacted and then the following ingredients added wherein polymerization commences-water, sodium phosphates, styrene, mineral oil, calcium chloride stearic acid and benzoyl peroxide.
申请人：BRITISH PETROLEUM CO. LTD.: