ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
A two-step, catalytic, anhydrous solution process was developed for the preparation of the polycarbonate of 2,2-bis(p-hydroxyphenyl)propane (bisphenol-A). It involves the preparation of the dichloroformate of bisphenol-A followed by its condensation with bisphenol-A in the presence of magnesium metal. Attempts were also made to develop a one-step, catalytic solution process. The reaction of bisphenol-A with phosgene, in the presence of aluminum chloride, a very powerful catalyst, led to polymers with reduced viscosities as high as 0.35. Higher viscosities were not obtained due to the lack of a suitable, nonreactive solvent.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1965.070091009
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