公开(公告)号：US3870684A

公开(公告)日：1975-03-11

申请号：US26734972

申请日：1972-06-29

Applicant: BAYER AG

Inventor： WITT HARRO ,  DIETERICH DIETER

IPC: C08G18/08 ,  C08G18/10 ,  C08J3/12 ,  C08G22/16 ,  C08G22/30 ,  C08G51/24

CPC classification number: C08J3/12 ,  C08G18/0804 ,  C08G18/0866 ,  C08G18/10 ,  C08J2375/00 ,  C08G18/3228

Abstract: Aqueous dispersions are prepared by dispersing in an aqueous polyamine solution an NCO terminated polyurethane or polyurea containing ionic groups.

Abstract translation: 水性分散体是通过将多胺胺水溶液分散在含有NCO封端的聚氨酯或含有离子基团的聚脲中制备的。

公开(公告)号：US3622527A

公开(公告)日：1971-11-23

申请号：US3622527D

申请日：1968-04-22

Applicant: BAYER AG

Inventor： DIETERICH DIETER ,  REISCHL ARTUR ,  WITT HARRO

IPC: C08G18/83 ,  C08J3/07 ,  C08J9/28 ,  B29D27/04 ,  B29D27/08 ,  C08G22/00 ,  C08G22/44

CPC classification number: C08J3/07 ,  C08G18/83 ,  C08J9/28 ,  C08J2201/0504 ,  C08J2375/04 ,  Y10S264/62 ,  Y10S264/77 ,  Y10S428/904 ,  Y10S521/919 ,  Y10T428/249978 ,  Y10T428/31859 ,  Y10T428/31862 ,  Y10T428/31873

Abstract: Microporous sheets or molded articles, permeable to water vapor are prepared from sedimenting and redispersible aqueous polyurethanes. The dispersions are in microgel form, the particles having an average minimum diameter of from 2 to 500 microns, preferably 8 to 100 microns. A second component binds the microgel together without impairing the microporosity. The products of the invention are useful as artificial leather in the preparation of raincoats, handbags, belts, shoes, upholstery and also as vibration and sound-damping materials.

公开(公告)号：US3868350A

公开(公告)日：1975-02-25

申请号：US36418073

申请日：1973-05-25

Applicant: BAYER AG

Inventor： REIFF HELMUT ,  WITT HARRO ,  DIETERICH DIETER

IPC: D06N3/14 ,  C08G18/00 ,  C08G18/08 ,  C08G18/10 ,  C09D175/04 ,  D06M15/564 ,  C08G22/00 ,  C08G53/03

CPC classification number: C08G18/10 ,  C08G18/0804 ,  C08G18/32 ,  C08G18/3834

Abstract: Thermoplastic polyurea powders and sedimenting aqueous solutions of the same wherein the powders have A. AN AVERAGE PARTICLE DIAMETER OF FROM 10 TO 1,000 Mu , B. A MELTING RANGE OF FROM 100* TO 180*C., c. a urea and, optionally, urethane group content of from 10 to 30% by weight, with the proviso that the urea group content is at least about 5%, and D. AN IONIC GROUP CONTENT OF FROM 0.01 TO 0.15 MILLIEQUIVALENTS PER GRAM; PREPARED BY REACTING (1) POLYURETHANES WHICH CONTAIN FREE NCO groups and ionic groups with (2) primary and/or secondary aliphatic diamines and/or dicarboxylic acid-bis-hydrazides at an NH to NCO ratio of from 0.1 to 0.95 and in the presence of water. The powders are useful for finishing textiles, for coatings, as binders or as auxiliary agents in the paper industry, and the like.

Abstract translation: 热塑性聚脲粉末和沉淀水溶液，其中粉末具有A.平均颗粒直径为10至1,000微米，B.从100℃至180℃的熔融范围。

公开(公告)号：US3920598A

公开(公告)日：1975-11-18

申请号：US45218074

申请日：1974-03-18

Applicant: BAYER AG

Inventor： REIFF HELMUT ,  LIENERT JURGEN ,  NAST ROLAND ,  WITT HARRO ,  GUPTA PRAMOD

IPC: C08G18/00 ,  C08G18/78 ,  C08G18/80 ,  C08G18/76

CPC classification number: C08G18/8061 ,  C08G18/7818 ,  C08G18/7831

Abstract: A polyurethane which is adapted to be dispersed in water without an emulsifier is prepared by reacting an organic compound having reactive hydrogen atoms determinable by the Zerewitinoff method with an organic diisocyanate having a side chain which contains repeating (O-CH2-CH2) groups. Latices prepared from the polyurethane may be used to prepare films and coatings having improved physical properties.

Abstract translation: 通过使具有可通过Zerewitinoff法测定的反应性氢原子的有机化合物与具有重复（O-CH 2 -CH 2）基团的侧链的有机二异氰酸酯反应，适于分散在没有乳化剂的水中的聚氨酯。 可以使用由聚氨酯制备的粘合剂来制备具有改善的物理性能的膜和涂层。

公开(公告)号：US3642866A

公开(公告)日：1972-02-15

申请号：US3642866D

申请日：1968-05-13

Applicant: BAYER AG

Inventor： WITT HARRO ,  HOLTSCHMIDT HANS ,  MULLER ERWIN

IPC: C07C41/00 ,  C07C43/20 ,  C07C43/263 ,  C07C69/76

CPC classification number: C07C255/00 ,  C07C317/00

Abstract: HEATING A DIARYL CARBONATE HAVING AT LEAST ONE SECOND ORDER SUBSTITUENT POSITIONED ON THE ARYL MOIETY ORTHO OR PARA TO THE CARBONATE MOIETY IN THE PRESENCE OF A CATALYTIC AMOUNT OF A BASIC TO NEUTRAL ALKALI METAL COMPOUND AT A TEMPERATURE OF FROM ABOUT 100 TO 300*C. TO PRODUCE THE CORRESPONDING DIARYL ETHER.