公开(公告)号：DE2724363A1

公开(公告)日：1978-11-30

申请号：DE2724363

申请日：1977-05-28

Applicant: BASF AG

Inventor： REUTHER WOLFGANG DIPL CHEM DR ,  SEGNITZ ADOLPH DIPL CHEM DR ,  WITTMANN OTTO ING GRAD ,  WINTER JUERGEN ING GRAD

IPC: B32B21/08 ,  C08G18/10 ,  C08G18/48 ,  C08G18/62 ,  C08G18/70 ,  C08J3/03 ,  C08L75/02 ,  C09J175/00 ,  C09K23/38 ,  C08J3/06 ,  B01F17/38 ,  C09J3/16

Abstract: Prepn. of aq. polyisocyanate emulsions involves dispersing or emulsifying the polyisocyanates in water in the presence of an emulsifier based on a polyglycol of molecular wt. 4,000-20,000, or a polyvinyl alcohol of molecular wt. 5,000-100,000. The polyisocyanate is pref. the phosgenated reaction product of aniline and formaldehyde. The emulsion can also be prepd. in the additional presence of a polypeptide. The emulsions are used for the glueing together of wood chip panels.

公开(公告)号：DE2605482A1

公开(公告)日：1977-08-18

申请号：DE2605482

申请日：1976-02-12

Applicant: BASF AG

Inventor： REUTHER WOLFGANG DIPL CHEM DR ,  SEGNITZ ADOLPH DIPL CHEM DR ,  PAULUS GERHARD DIPL CHEM DR ,  QUEINS HUBERTUS DIPL CHEM DR ,  SCHOEPPL HUBERT DIPL CHEM DR

IPC: C08G8/04 ,  C08L61/06

Abstract: Isobutyraldehyde-phenol polycondensates of novolak type are prepd. by reacting isobutyraldehyde with a phenol in mol. ratio of 2-0.5:1 (0.8-1.3:1) in the presence of a strong inorganic acid or a Lewis acid. Process takes place in the melt, in absence of solvents. The polycondensates are used as adhesive agents for rubber. Other uses are: prepn. of adhesive mixts., wood glues, esp. binders for chipboard; sand core binders; and anti-ageing additives. Yields are quantitative. Tackiness improvement, partic. in natural rubber, is higher than that achieved with standard tackifiers, e.g. coumarone-, hydrocarbon- and known phenol resins.