Method for inhibiting the polymerization of vinyl aromatics
PCT No. PCT/IB94/00240 Sec. 371 Date Jan. 23, 1996 Sec. 102(e) Date Jan. 23, 1996 PCT Filed Jul. 18, 1994 PCT Pub. No. WO95/03263 PCT Pub. Date Feb. 2, 1995A method for inhibiting the polymerization of vinyl aromatics such as styrene with a mixture of 3,5-di-tert-butyl-4-hydroxy-N,N-dimethylbenzyl a...
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Main Authors | , , , |
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Format | Patent |
Language | English |
Published |
28.04.1998
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | PCT No. PCT/IB94/00240 Sec. 371 Date Jan. 23, 1996 Sec. 102(e) Date Jan. 23, 1996 PCT Filed Jul. 18, 1994 PCT Pub. No. WO95/03263 PCT Pub. Date Feb. 2, 1995A method for inhibiting the polymerization of vinyl aromatics such as styrene with a mixture of 3,5-di-tert-butyl-4-hydroxy-N,N-dimethylbenzyl amine and carboxylic acids or anhydrides thereof, in the presence of air or oxygen. The weight ratio of said 3,5-Di-tert-butylhydroxy-N,N-dimethylbenzyl amine, carboxylic acid (or carboxylic acid anhydride) and the air is 1:1 to 0.05:0.05 to 15, respectively. |
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Bibliography: | Application Number: US19960586781 |