公开(公告)号：US3763054A

公开(公告)日：1973-10-02

申请号：US3763054D

申请日：1970-12-07

申请人： BAYER AG

发明人： REISCHL A ,  DIETERICH D ,  WITT H

IPC分类号： B29C67/20 ,  C08J9/28 ,  D06N3/14 ,  B29D27/08 ,  C08G22/00 ,  C08G53/08

CPC分类号： C08J9/28 ,  B29C67/202 ,  C08J2375/00 ,  C08J2375/04 ,  D06N3/14 ,  Y10S264/62 ,  Y10S264/77

摘要： MICROPOROUS SHEET STRUCTURES ARE PREPARED BY CONVERTING AQUEOUS DISPERSIONS OF POLYURETHANE POLYMERS HAVING SALT-TYPE GROUPS INTO SHEET STRUCTURES AND MELT SINTERING THE STRUCTURES. THE DISPERSIONS ARE SEDIMENTING AND REDISPERSIBLE, THE PARICLES HAVING AN AVERAGE PARTICLE SIZE ABOVE ABOUT 5U. THE PRODUCTS OF THE INVENTION ARE USEFUL AS ARTIFICAL LEATHER IN THE PREPARATION OF RAINCOATS, HANDBAGS, BELTS, SHOES, UPHOLSTERY AND ALSO AS VIBRATION AND SOUND DAMPING MATERIALS.

公开(公告)号：US3769381A

公开(公告)日：1973-10-30

申请号：US3769381D

申请日：1971-07-26

申请人： BAYER AG

发明人： KONIG K ,  TRAUBEL H ,  REISCHL A ,  ZORN B

IPC分类号： C07C317/22 ,  C08G18/10 ,  C08G18/38 ,  C08G63/688 ,  C08J9/28 ,  B29D27/00

CPC分类号： C08J9/28 ,  C07C317/22 ,  C08G18/10 ,  C08G18/3855 ,  C08G18/3872 ,  C08G63/6886 ,  C08J2375/00 ,  C08J2375/04 ,  C08G18/3225 ,  C08G18/325

摘要： MICROPOROUS SHEETS ARE PREPARED BY REACTING AN NCO TERMINATED PREPOLYMER WITH A DISECONDARY DIAMINE IN AN INERT SUBSTANCE THAT DISSOLVES THE REACTANTS BUT CAUSES ONLY SWELLING OF THE PRODUCT THEREOF AND DRYING THE DISPERSIONS THUS FORMED TO FORM MICROPOROUS FOILS.

公开(公告)号：US3714095A

公开(公告)日：1973-01-30

申请号：US3714095D

申请日：1971-01-12

申请人： BAYER AG

发明人： REISCHL A ,  DIETERICH D

IPC分类号： C08G18/08 ,  C08L75/04 ,  C08G41/04 ,  C08G51/24 ,  C08J1/48

CPC分类号： C08G18/0809 ,  C08L75/04 ,  C08L2666/20

摘要： Coarse, aqueous dispersions of polyurethanes that sediment but are capable of being redispersed are prepared from 40 to 99.5 percent by weight of a polyurethane polymer having a molecular weight greater than 5,000 and preferably above 20,000 which is free of salt-forming groups and from about 0.5 to about 60 percent by weight of a polyurethane polymer containing saltforming groups. Salt formation is permitted to occur until 0,0007 to 0,011 equivalent percent has taken place and the mixture is then dispersed at least in a quantity of water such that the solids content is 60 percent.

摘要翻译： 沉淀但能够再分散的聚氨酯的粗分散水分散体由40至99.5重量％的分子量大于5,000，优选20,000以上的不含成盐基团的聚氨酯聚合物和约0.5重量％ 至约60重量％的含有成盐基团的聚氨酯聚合物。 允许产生盐形成直到发生了0,700至0,011当量百分比，然后混合物至少以一定量的水分散，使得固体含量为60％。