公开(公告)号：CH431963A

公开(公告)日：1967-03-15

申请号：CH1527264

申请日：1964-11-26

Applicant: BASF AG

Inventor： REICHARDT ALFRED DR ,  REINHARD HANS DR ,  LEIFELS HEINZ-WILHELM DR

IPC: B32B27/00 ,  C08J7/04 ,  C09D127/08 ,  D03D51/34 ,  C08F29/12

公开(公告)号：DE2261754A1

公开(公告)日：1974-06-27

申请号：DE2261754

申请日：1972-12-16

Applicant: BASF AG

Inventor： LEIFELS HEINZ-WILHELM DR ,  GOETZ KARL ,  SCHOENE WERNER DR ,  JENNE HELMUT DR ,  STANGE KARL DR

IPC: C08J7/04 ,  B44D3/18 ,  C09D5/00

Abstract: Markable film is coated on >=1 side with a mixt. of finely divided mineral fillers and usual binder(s) for paper coating compsns., the coating contg. 10-95 wt. % mixt. of mineral fillers (I) with Mohs' hardness is not 5 and particle size 0.4-20 mu m and mineral fillers (II) with greater intrinsic surface area, pref. 70-250 m2/g and particle size 0.01-5 mu m, the (I)/(II) ratio being 80:20 to 35:65. It can be marked satisfactorily with lead pencils (is not >6H), Indian ink, writing ink, ball pen ink, etc. Most marks can be erased easily and ink does not run in erased areas. The film has good dimensional stability under fluctuating conditions of humidity and when wetted. Its opacity is 10-50%, so that it can be used for copying and blue-print prodn.