公开(公告)号：US3896087A

公开(公告)日：1975-07-22

申请号：US27105472

申请日：1972-07-12

Applicant: BASF AG

Inventor： BRUNNMUELLER FRIEDRICH ,  HENKEL HELMUT ,  LENZ JOHANN

IPC: B27K3/15 ,  C08G12/12 ,  C08L61/24 ,  C08L61/28 ,  C08G9/10

CPC classification number: C08G12/12 ,  B27K3/15 ,  C08L61/24 ,  C08L61/28 ,  C08L97/02 ,  C08L61/20

Abstract: Manufacture of impregnating urea/formaldehyde resins in which, in order to achieve particularly high rates of impregnation, urea and formaldehyde are condensed in acid solution until waterincompatibility commences, whereupon the mixture is treated with formaldehyde followed by urea.

公开(公告)号：US3661812A

公开(公告)日：1972-05-09

申请号：US3661812D

申请日：1970-11-23

Applicant: BASF AG

Inventor： BUCHNER ANTON ,  LANG HANS ,  LENZ JOHANN ,  UNTERSTENHOEFER LEO ,  KRIEGER WILHELM

IPC: C08J9/30 ,  C09K17/16 ,  C08J1/16

CPC classification number: C08J9/30 ,  C08J2361/24 ,  C09K17/16

Abstract: A PROCESS FOR IMPROVING THE FLOWABILITY OF AMINOPLAST FOAMS PRIOR TO CURING, PARTICULARLY FOR COVERING SOIL, BY INCORPORATING COARSE GAS BUBBLES INTO FOAM CONTAINING FINE BUBBLES.

公开(公告)号：US3482353A

公开(公告)日：1969-12-09

申请号：US3482353D

申请日：1967-06-12

Applicant: BASF AG

Inventor： FISCHER MAX ,  SCHEUERMANN HANS ,  KLAASSEN HERMANN ,  LENZ JOHANN

IPC: C05C9/02 ,  A01G7/00

CPC classification number: C05C9/02 ,  Y10S111/915 ,  C05G1/00 ,  C05D9/00

公开(公告)号：AU6403273A

公开(公告)日：1975-07-03

申请号：AU6403273

申请日：1973-12-28

Applicant: BASF AG

Inventor： BRUNNMUELLER FRITZ ,  GUENDER WOLF ,  LENZ JOHANN

IPC: D21H17/51 ,  C08G9/32

公开(公告)号：DE2207921A1

公开(公告)日：1972-08-30

申请号：DE2207921

申请日：1972-02-19

Applicant: BASF AG

Inventor： ERHARDT KLAUS DR ,  PETERSEN HARRO DR ,  REUTHER WOLFGANG ,  WITTMANN OTTO ,  BRUNNMUELLER FRITZ DR ,  GRABOWSKY OTTO DR ,  MAYER JOHANN DR ,  LENZ JOHANN

IPC: C08G12/12 ,  C08G9/10

Abstract: A urea-formaldehyde resin is formed by (a) reacting formaldehyde and urea of an initial molar ratio of >=3, in an aqs. soln., pH 3, until 1% of the urea has reacted to form urone gps., or by reacting as above during a time t = 10pH-2 (between 90-100 degrees C), (b) adding urea to the obtd. prod., at pH=3, such that the polar ratio HCHO:urea is 2-2.75 and condensing until the aqs. soln. of the condensate is no longer indefinitely dilutable in water at room temp., and (c) concentrating or evaporating the soln. formed to give a prod. contg. HCHO and urea in a molar ratio 1-2.75. The resin is used partic. in the mfr. of plywood and has a reduced tendency to evolve free HCHO.

公开(公告)号：CA866247A

公开(公告)日：1971-03-16

申请号：CA866247D

Applicant: BASF AG

Inventor： HENKEL HELMUT ,  MAYER JOHANN ,  LENZ JOHANN

公开(公告)号：DE1800821A1

公开(公告)日：1970-06-11

申请号：DE1800821

申请日：1968-10-03

Applicant: BASF AG

Inventor： LENZ JOHANN ,  HENKEL HELMUT ,  MAYER DR JOHANN

IPC: C08L61/20 ,  D06N7/06 ,  D21H17/49 ,  C08G37/00

公开(公告)号：CA779392A

公开(公告)日：1968-02-27

申请号：CA779392D

Applicant: BASF AG

Inventor： BRANDEIS HANS ,  LENZ JOHANN ,  FIKENTSCHER ROLF ,  KIRMSE HERBERT

公开(公告)号：FR1493151A

公开(公告)日：1967-08-25

申请号：FR74097

申请日：1966-08-25

Applicant: BASF AG

Inventor： SCHEUERMANN HANS ,  UNTERSTENHOEFER LEO ,  LENZ JOHANN

IPC: B29B7/74

公开(公告)号：DE1241612B

公开(公告)日：1967-06-01

申请号：DEB0067221

申请日：1962-05-12

Applicant: BASF AG

Inventor： SCHEUERMANN DR HANS ,  ROESSLER DR GEORG ,  HUCHLER DR OTTO HERMANN ,  LENZ JOHANN

IPC: C08G12/04 ,  C08G12/34