Method for stabilizing vinyl aromatic monomers using...

Distillation: processes – separatory – Adding material to distilland except water or steam per se – Organic compound

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C585S003000, C585S802000, C585S807000, C585S808000, C585S809000, C585S832000, C252S182180, C252S182290, C252S404000

Reexamination Certificate

active

06960279

ABSTRACT:
Disclosed is the observation that 7-aryl-quinone methides and 4-tert-butylcatechol, when used in combination in a vinyl aromatic monomer to inhibit polymerization,do not inhibit polymerization to the same extend as each would if used separately. Stated another way, a phenomenon has been observed that when these two compounds are used together, they can, to a large extent, render each other unable to inhibit polymerization in a vinyl aromatic monomer. Also disclosed are methods of preventing adverse results of this interaction when undesired and a method of using this interaction to prepare a reactive vinyl aromatic monomer having a concentration of 4-tert-butylcatechol that would otherwise inhibit polymerization. The invention is disclosed to be useful with the production and storage of any vinyl aromatic monomer and is disclosed to be particularly useful with the production and storage of styrene monomer.

REFERENCES:
patent: 4032547 (1977-06-01), Bacha et al.
patent: 4466904 (1984-08-01), Watson et al.
patent: 5583247 (1996-12-01), Nesvadba et al.
patent: 5616774 (1997-04-01), Evans et al.
patent: 5670692 (1997-09-01), Nesvadba et al.
patent: 5750765 (1998-05-01), Nesvadba et al.
patent: 6024894 (2000-02-01), Arhancet
patent: 6348598 (2002-02-01), Doi et al.
patent: 6685823 (2004-02-01), Benage et al.
patent: 2004/0010159 (2004-01-01), Benage
patent: 2004/0034247 (2004-02-01), Eldin

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for stabilizing vinyl aromatic monomers using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for stabilizing vinyl aromatic monomers using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for stabilizing vinyl aromatic monomers using... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3516412

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.