公开(公告)号：DE2939657A1

公开(公告)日：1981-04-16

申请号：DE2939657

申请日：1979-09-29

Applicant: BASF AG

Inventor： DISTLER DIETER DIPL CHEM DR ,  MUELLER GERHARD H DIPL CHEM DR ,  BUBAM HANS-GEORG DIPL CHEM DR ,  ADDICKS GUENTHER DIPL CHEM DR

IPC: C08F212/08 ,  C08F236/06 ,  D21H19/58 ,  D21H1/28

Abstract: A low-odor aqueous binder dispersion containing as copolymerized units, and based on solids content, (a) from 25 to 57.5% by weight of butadiene or of butadiene and an acrylic acid ester, the content of copolymerized butadiene being not less than 15% by weight, (b) from 40 to 70% by weight of styrene, (c) from 1 to 5% by weight of maleic acid or maleic anhydride and (d) from 1.5 to 7% by weight of methacrylamide, for use in paper-coating compositions.

公开(公告)号：DE2630088A1

公开(公告)日：1978-01-12

申请号：DE2630088

申请日：1976-07-03

Applicant: BASF AG

Inventor： WEITZ HANS-MARTIN DIPL CHEM DR ,  BUBAM HANS-GEORG DIPL CHEM DR ,  SCHWARTZ ERICH DIPL CHEM DR

IPC: B01J19/00 ,  C01B7/09 ,  C07C121/30 ,  C07C120/04

Abstract: The formation of free bromine is suppressed in aq. solns. at 20-100 degrees C, contg. bromide ions and HNO3, the suppression is achieved by adding urea in less than the stoichiometric amt. w.r.t. the HNO3. The aq. soln. is pref. also treated with O2, esp. gases contg. min. 50 vol % O2. Used e.g. in mfg. hexamethylene-diamine needed in the prodn. of polyamides.

公开(公告)号：DE2626123A1

公开(公告)日：1977-12-22

申请号：DE2626123

申请日：1976-06-11

Applicant: BASF AG

Inventor： WENDEL KURT DIPL CHEM DR ,  BUBAM HANS-GEORG DIPL CHEM DR ,  KRAPF HEINZ DIPL CHEM DR

IPC: C08F2/24 ,  D21H19/56 ,  D21H1/28

Abstract: Aq. dispersions of polymers from ethylenic-unsatd monomers contain as dispersing agent system a mixt. of (a) alkali and/or NH4 salts of 12-20C mono-alkyl or monoalkenyl sulphates, and (b) >=1 ether contg. OH gps. from a polyhydric alcohol. Used as binders for paper coating, opt. mixed with natural binders, e.g. casein or starch. The system has excellent pigment-binding capacity, shear stability and resistance to viscosity change on storage. Low foaming tendency, and any foam formed is less stable than that from known systems in which (b) is an ester of a polyhydric alcohol and 12-18C fatty acid. The tendency of the latter to hydrolysis during storage is also overcome.