公开(公告)号：US4167485A

公开(公告)日：1979-09-11

申请号：US891017

申请日：1978-03-28

申请人： Wolfgang Schenk ,  Joachim Stedefeder ,  Heinz Leitner ,  Hans-Uwe Schenck

发明人： Wolfgang Schenk ,  Joachim Stedefeder ,  Heinz Leitner ,  Hans-Uwe Schenck

IPC分类号： C08F220/00 ,  C08F220/04 ,  C08F220/06 ,  C08F220/42 ,  D06M15/263 ,  D06M15/285 ,  D06M13/34

CPC分类号： D06M15/285 ,  C08F220/06 ,  C08F220/42 ,  Y10T428/257 ,  Y10T428/2958

摘要： A process for sizing staple fiber yarns by applying an aqueous sizing liquor which contains an alkaline earth metal salt of a copolymer containing from 90 to 30% by weight of acrylic acid and/or methacrylic acid and from 10 to 70% by weight of acrylonitrile and/or methacrylonitrile, which copolymer has a viscosity of from 50 to 1,000 cp in 15% strength aqueous solution at 85.degree. C., and drying the treated yarns. The sized films obtained are moisture-insensitive and have good heat stability.

摘要翻译： 通过施加包含含有90至30重量％的丙烯酸和/或甲基丙烯酸和10至70重量％的丙烯腈的共聚物的碱土金属盐的水性施胶液来定尺码短纤维纱线的方法， /或甲基丙烯腈，该共聚物在85℃下的15％强度水溶液中具有50-1000cp的粘度，并干燥经处理的纱线。 获得的尺寸的膜是不透湿的并且具有良好的热稳定性。

公开(公告)号：US4135043A

公开(公告)日：1979-01-16

申请号：US820720

申请日：1977-08-01

申请人： Bernd Kast ,  Joachim Stedefeder ,  Axel Sanner ,  Hans-Uwe Schenck ,  Richard Thoma ,  Hermann Fischer

发明人： Bernd Kast ,  Joachim Stedefeder ,  Axel Sanner ,  Hans-Uwe Schenck ,  Richard Thoma ,  Hermann Fischer

IPC分类号： C08F2/00 ,  C08F2/16 ,  C08F291/00 ,  C08F2/10 ,  C08F20/06 ,  C08F20/70

CPC分类号： C08F291/00 ,  Y10S526/909

摘要： Polymers in powder form are manufactured by polymerizing water-soluble ethylenically unsaturated monomers, which form hydrophilic polymers, in a powder bed of polymers of water-soluble ethylenically unsaturated compounds in the presence of polymerization initiators and water as an auxiliary liquid, the water being entirely or partially removed from the polymerization zone by evaporation during the polymerization.

公开(公告)号：US4294873A

公开(公告)日：1981-10-13

申请号：US109315

申请日：1980-01-03

申请人： Juergen Hartmann ,  Joachim Stedefeder ,  Walter Denzinger ,  Sigberg Pfohl

发明人： Juergen Hartmann ,  Joachim Stedefeder ,  Walter Denzinger ,  Sigberg Pfohl

IPC分类号： D21H19/20 ,  D21H17/43 ,  B05D3/02 ,  B32B23/08 ,  B32B27/10

CPC分类号： D21H17/43 ,  Y10T428/31895 ,  Y10T428/31906

摘要： A process for the manufacture of paper having a high dry strength and a low wet strength, by treating the surface of the paper with an aqueous solution of an alkali metal and/or alkaline earth metal salt of a polymer of (a) from 91 to 100% by weight of acrylic acid and/or methacrylic acid and (b) from 0 to 9% by weight of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, vinyl acetate, maleic anhydride, diisobutylene, an ester of acrylic acid and/or an ester of methacrylic acid, which has a viscosity of from 5 to 100 mPas in 2% strength aqueous solution at 20.degree. C., and drying the impregnated paper. The polymer is generally employed in an amount of from 1 to 4% by weight, based on dry paper, and increases the dry strength of the paper without substantially increasing the wet strength.

摘要翻译： 通过用（a）91的聚合物的碱金属和/或碱土金属盐的水溶液处理纸的表面来制造具有高干燥强度和低湿强度的纸的方法， 丙烯酸和/或甲基丙烯酸的100重量％和（b）0-9重量％的丙烯腈，甲基丙烯腈，丙烯酰胺，甲基丙烯酰胺，乙酸乙烯酯，马来酸酐，二异丁烯，丙烯酸和/或酯的酯 的甲基丙烯酸，其在20℃的2％强度水溶液中具有5至100mPas的粘度，并干燥浸渍的纸。 聚合物通常以基于干纸的1至4重量％的量使用，并且增加纸的干强度而基本上不增加湿强度。

公开(公告)号：US4086413A

公开(公告)日：1978-04-25

申请号：US792729

申请日：1977-05-02

申请人： Joachim Stedefeder ,  Ingo H. Dorn ,  Horst Kuhn ,  Walter Kastenhuber ,  Wolfgang Linke

发明人： Joachim Stedefeder ,  Ingo H. Dorn ,  Horst Kuhn ,  Walter Kastenhuber ,  Wolfgang Linke

IPC分类号： C08F6/00 ,  C08J11/00

CPC分类号： C08F6/003

摘要： Copolymers of crotonic acid are purified, to remove monomeric crotonic acid, by extracting the copolymers with water at from 50.degree. to 120.degree. C and stirring the system, the flow energy of the water and the energy of stirring being chosen so that the polymer particles just remain suspended.

摘要翻译： 纯化巴豆酸的共聚物，以除去单体巴豆酸，通过用50-120℃的水萃取共聚物并搅拌该体系，选择水的流动能和搅拌能，使聚合物颗粒 只是暂停。