Chemical characterization of CTBN (carboxyl-terminated butadiene/acrylonitrile) and its epoxy adduct

Technical Report · Mon Jan 01 00:00:00 EST 1990

DOI:https://doi.org/10.2172/5054971· OSTI ID:5054971

Smith, R. E.

This report describes the analysis of carbonxyl-terminated butadiene (CTB), carboxyl-terminated butadiene/acrylonitrile (CTBN), and a CTBN adduct prepared by reaction with Epon 828. Data from gel permeation chromatography, nuclear magnetic resonance spectroscopy, high performance liquid chromatography, and ion chromatography are presented and discussed. Quantitative methods based on carbon-13 and proton NMR for analyzing CTBN are described. Proton NMR was found to be useful in identifying lots that have an abnormal amount of CTBN protons. One such lot exhibited a phase separation of a polybutadiene impurity. Carbon-13 NMR was found to be capable of determining nitrile content directly. Carbon-13 NMR had a relative standard deviation of 8.3% and a proton NMR of 3.9%. Proton NMR was found to be useful in identifying lots that have 5% more CTBN protons than other lots. 3 refs., 11 figs., 4 tabs.

• Research Organization: Allied-Signal Aerospace Co., Kansas City, MO (USA). Kansas City Div.
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC04-76DP00613
• OSTI ID: 5054971
• Report Number(s): KCP-613-4222; ON: DE90006397
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACRYLONITRILE
CHEMICAL ANALYSIS
BUTADIENE
POLYMERS
ADDUCTS
EPOXIDES
GEL PERMEATION CHROMATOGRAPHY
LIQUID COLUMN CHROMATOGRAPHY
NITRILES
NMR SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
CHROMATOGRAPHY
DIENES
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
POLYENES
SEPARATION PROCESSES
SPECTRA
400102* - Chemical & Spectral Procedures