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21. 发明专利

SE345464B 未知
公开(公告)号：SE345464B
公开(公告)日：1972-05-29
申请号：SE25766
申请日：1966-01-10
申请人： DOW CHEMICAL CO
发明人： HARMON T
IPC分类号： C08F2/00 , C08F2/18 , C08J9/32 , C08F1/11 , C08F1/62 , C08F7/04 , C08F47/08

22. 发明专利

DE1770553A1 未知
公开(公告)号：DE1770553A1
公开(公告)日：1971-10-28
申请号：DE1770553
申请日：1968-06-01
申请人： BASF AG
发明人： PRIEBE EDMUND DR , WEBER HEINZ DR , HIRSCH GUENTER DR , SCHULLER HELMUT DR , TRIESCHMANN HANS-GEORG PROF DR , WILLERSINN LERBERT DR
IPC分类号： C08F283/12 , C08J9/20 , C08J9/224 , C08F7/04

23. 发明专利

DE2059375A1 未知
公开(公告)号：DE2059375A1
公开(公告)日：1971-06-09
申请号：DE2059375
申请日：1970-12-02
申请人： CHARBONNAGES STE CHIMIQUE
发明人： PAILLOUX CLAUDE
IPC分类号： C08F2/16 , C08F279/02 , C08F7/04

24. 发明专利

DE1812218B2 未知
公开(公告)号：DE1812218B2
公开(公告)日：1971-03-25
申请号：DE1812218
申请日：1968-12-02
IPC分类号： C08F12/12 , C08F7/04

25. 发明专利

SE332069B 未知
公开(公告)号：SE332069B
公开(公告)日：1971-01-25
申请号：SE257666
申请日：1966-02-28
申请人： DOW CHEMICAL CO
发明人： RONDEN C , YU J
IPC分类号： C08F2/18 , C08F4/00 , C08F4/28 , C08J9/16 , C08J9/20 , C08F1/11 , C08F1/58 , C08F7/04
摘要： 1,125,492. Vinyl polymers in bead form. DOW CHEMICAL CO. 23 Feb., 1966 [1 March, 1965], No. 8001/66. Headings C3C and C3P. An aq. suspension containing a vinyl monomer, the weight ratio of monomer to water not exceeding 1À1: 1, 0À1-0À7% by wt. of at least one solid inorganic suspension stabilizer having a particle size of not more than 50 Á and 0À15- 0À30% of (1) 0À04-0À15% of at least one azo compound capable of acting as an initiator at below 90 C. and of producing alkaline decomposition products, (2) 0À02-0À07% benzoyl peroxide and (3) 0À02-0À20% of at least one organic per compound capable of acting as a free radical initiator and having a half-life of 0À1-6À0 hours to 110 C., is heated to 78- 85 C. for 4-9 hours, whereby the monomer is initially polymerized catalysed by the azo compound whose decomposition products causes the pH of the suspension to be above 6À0, is then heated to 87-100 C. for 4-7 hours, whereby further polymerization occurs catalysed by the benzoyl peroxide, and is then heated to 110-135 C. for 2-12 hours, whereby further polymerization occurs catalysed by the per compound which, together with the benzoyl peroxide, produces acidic decomposition products which tend to lower the pH, the terminal pH of the suspension being at least 5À9 and the suspension being free of flocculated suspension stabilizer, the suspension is then cooled to room temperature, acidified to a pH of 1 and the polymer is recovered in bead form. The monomer may be styrene. The stabilizer may be tricalcium phosphate with optionally calcium carbonate and may be used with a surfactant, e.g. sodium #-naphthalene sulphonate and a protective colloid, e.g. sodium polyacrylate. The azo compound may be azobisisobutyronitrile and the free radical initiator may be tbutyl perbenzoate, t-butyl peroxy isopropyl carbonate or 2,5 - dimethylhexane - 2,5 - diperbenzoate. A blowing agent, e.g. pentane, hexane, heptane, petroleum ether, cyclohexane or 2- methyl-1-pentene, may be added to the suspension prior to or after polymerization to produce foamable polymers in bead form.

26. 发明专利

CH499553A Verfahren zur Herstellung von mechanisch stabilen homopolymeren Styroldispersionen im wässrigen Medium 未知
公开(公告)号：CH499553A
公开(公告)日：1970-11-30
申请号：CH1058068
申请日：1968-07-11
申请人： REICHHOLD ALBERT CHEMIE AG
发明人： DIPL-CHEM PLETTNER WOLFRAM DR
IPC分类号： C08F2/22 , C08F12/08 , C08F1/09 , C08F7/04 , C08F33/02

27. 发明专利

DE2016731A1 未知
公开(公告)号：DE2016731A1
公开(公告)日：1970-11-05
申请号：DE2016731
申请日：1970-04-08
IPC分类号： C08F2/00 , C08F2/36 , C08F2/44 , C08F12/08 , C08K5/00 , C08L7/00 , C08L21/00 , C08L25/00 , C08L33/00 , C08L33/02 , C08L51/00 , C08L51/02 , C08F7/04
摘要： 1311518 Self extinguishing styrene polymers MONTECATINI EDISON SpA 7 April 1970 [10 April 1969] 16381/70 Heading C3P Styrene polymers or copolymers (including polymers of substituted styrenes) are rendered self-extinguishing by incorporating into them prior to the completion of polymerization, one or more bromo-fluoro alkanes, in an amount of 0À1 to 10% by wt. of monomer used, of the general formula C n Br x F y where n is an integer from 1 to 8, x+y=2n+2 and y is greater than x. The compound CF 2 Br.CF 2 Br is specified, and in the example is incorporated into styrene homopolymers in varying amounts, by dissolving it in the monomeric styrene before polymerization, which is initiated with t-butyl perbenzoate.

28. 发明专利

NL7004901A 未知
公开(公告)号：NL7004901A
公开(公告)日：1970-10-13
申请号：NL7004901
申请日：1970-04-06
IPC分类号： C08F2/00 , C08F2/36 , C08F2/44 , C08F12/08 , C08K5/00 , C08L7/00 , C08L21/00 , C08L25/00 , C08L33/00 , C08L33/02 , C08L51/00 , C08L51/02 , C08F7/04
摘要： 1311518 Self extinguishing styrene polymers MONTECATINI EDISON SpA 7 April 1970 [10 April 1969] 16381/70 Heading C3P Styrene polymers or copolymers (including polymers of substituted styrenes) are rendered self-extinguishing by incorporating into them prior to the completion of polymerization, one or more bromo-fluoro alkanes, in an amount of 0À1 to 10% by wt. of monomer used, of the general formula C n Br x F y where n is an integer from 1 to 8, x+y=2n+2 and y is greater than x. The compound CF 2 Br.CF 2 Br is specified, and in the example is incorporated into styrene homopolymers in varying amounts, by dissolving it in the monomeric styrene before polymerization, which is initiated with t-butyl perbenzoate.

29. 发明专利

DE1645332A1 未知
公开(公告)号：DE1645332A1
公开(公告)日：1970-09-24
申请号：DES0102743
申请日：1966-03-24
申请人： SHELL INT RESEARCH
发明人： WILLIAM SHAW ALFRED , HARMON WILCOXEN JUN CHARLES , DONALD MANGO FRANK
IPC分类号： C08C19/44 , C08G81/02 , C08F7/04

30. 发明专利

DE1812218A1 未知
公开(公告)号：DE1812218A1
公开(公告)日：1970-03-26
申请号：DE1812218
申请日：1968-12-02
申请人： PENNSYLVANIA IND CHEMICAL CORP
发明人： PETE PATELLIS ANARGIROS , FRANCIS HOLOHAN JUN JOHN
IPC分类号： C08F12/12 , C08F7/04

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