DESCRIPTION OF TWO CHEMICAL PROCESSES IN USE AT OBERSPREEWERKE (4 PP; GERMAN; APRIL-MAY 1949)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP83-00415R008800140002-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 1
• Document Creation Date: December 14, 2016
• Document Release Date: July 26, 2001
• Sequence Number: 2
• Publication Date: September 13, 1951
• Content Type: REPORT

Approved For Release 2001/09/07 : CIA-RDP83-00415R008800140002-7
SECRET
German Democratic Republic FDD Abstract ^
DESCRIPTION OF TWO CHERvICAL PROCESSES IN USE, AT OBERSPREEVERKE (4 pp; German; April-
May 1949)
This document consists of photostats of two 2-page instruction sheets pre-
pared by the OSW (Oberspreewerke, I3erlin-Oberschoeneweide) in April and May 1949
on the production of two types of paste used in the manufacture of transmitter
tubes. Each instruction sheet includes a general description of the item to be
produced and its use, a list of equipment required for lX production (compara-
tively simple equipment, such as scales, graduates, funnels, bottles, and a sna ll
ball mill), a list of the chemical ingredients, and a step by step description
of the production process. In both cases, the process appears to be more of a
mechanical mixing process than an actual chemical reaction.
The two types of paste, both of which are used for spraying or dipping grids
in order to improve their performance, are called "Zirconium paste Zr 2 F 2" and
"Tantalum - graphite blackening paste". The components of the former are hydrogen-
satruated powdered zirconium metal, paraffin, naphthalene, methanol, and xylol.
Components of the latter are graphite paste, tantalum powder, ammonia water, and
distilled water.
Rem a
Z5X1A
/Foreign language document or a microfilm of it is available from CIA Library,
13 September 1951
Approved For Release 2001/09 7 JA-RDP83-00415R008800140002-7