Hello Clay,
You can search IFI's compound registry terms for substances and polymers we
have indexed in the CLAIMS chemical patent databases (IFIUDB, IFICDB, files
341 and 942). IFI has indexed all US chemical patents issued since 1950, and
a quick check showed that over 5000 of those indexed records reference
reactions producing polystyrene (nearly two-thirds of the chemical patents
in our database have at least one claim to a process or method).
If you would like to contact me directly and about your search, I can give
you more detailed info on how to search in IFI.
Regards,
Darlene
Darlene Slaughter
IFI CLAIMS Patent Services
3202 Kirkwood Highway
Wilmington, DE 19808
800-331-4955
302-633-7210
302-998-0733 (fax)
mailto:darlene.slaughter@aspenpubl.com
-----Original Message-----
From: Clay Matthews [mailto:claymatthews@yahoo.com]
Sent: Thursday, September 05, 2002 8:54 AM
To: Marnstu2@AOL.COM; piug-l@derwent.co.uk
Subject: Re: polystyrene preparation
The nature of the search is a 'patentability' search.
What I really want to know is whether a particular
reactant, (which would also have a registry #) has
ever been used as a reactant in generataing
polystyrene. Is it possible for me to search for
reactions based on this 'reactant qualifier.'
--- Marnstu2@AOL.COM wrote:
> At the risk of reciting the obvious, I would note
> that there are searches and
> searches. Some searches are just looking for some
> information on a subject,
> others are looking for all of the information on a
> subject, and still others
> are looking for specific information on the subject.
>
> Styrene polymerization is a VERY mature art. A lot
> of information on the
> polymerization of styrene can be looked up in
> standard sources, such as the
> Encyclopedia of Polymer Science & Technology, or
> various textbooks. Styrene
> can be converted to high polymers, low polymers, by
> thermal, free radical,
> anionic, cationic, Ziegler, metallocene techniques.
> Most of these, perhaps
> excluding the recent metallocenes and other single
> site systems, should be
> described pretty well in the standard references.
> Clay may need a search,
> but perhaps he can just look at a book (unless the
> USPTO has managed to
> destroy all books in all libraries).
>
> Stu Kaback
>
>
>
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