Accession Number:

AD0839380

Title:

HIGH-TEMPERATURE-RESISTANT POLYMER RESEARCH.

Descriptive Note:

Quarterly rept. no. 4, Apr-Jun 68.

Corporate Author:

NAVAL WEAPONS CENTER CORONA LABS CA

Personal Author(s):

Report Date:

1968-06-01

Pagination or Media Count:

24.0

Abstract:

The preparation of 180 g of beryllium 4-biphenylphenyl-phosphinate for evaluation purposes has been carried out. Beryllium a-naphthylphenylphosphinate has been prepared and evaluated for thermal stability. An attempt was made to prepare beryllium diphenylphosphinate-methylphenylphosphinate copolymer in trifluoroacetic acid, and an attempt was also made to prepare a cross-linked polymer from beryllium methylphenylphosphinate copolymer in trifluoroacetic acid, and an attempt was also made to prepare a cross-linked polymer from beryllium methylphenylphosphinate into which was incorporated a small quantity of phenylphosphonic acid. A preliminary study of the reactions of basic beryllium acetate with phosphinic acids was undertaken to see if tractable polymer formed. Molecular weight studies of several beryllium phosphinate polymers in toluene have shown that water causes rapid degradation from approximately 200 to 60 polymer units. Author-PL.

Descriptors:

• *INORGANIC POLYMERS)
• (*HEAT RESISTANT PLASTICS
• SYNTHESIS(CHEMISTRY))
• (*BERYLLIUM COMPOUNDS
• ORGANIC PHOSPHORUS COMPOUNDS
• POLYMERIZATION
• COPOLYMERIZATION
• MOLECULAR WEIGHT
• HYDROLYSIS
• CROSSLINKING(CHEMISTRY)
• THERMAL STABILITY

Subject Categories:

• Polymer Chemistry
• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE