Determining the reaction progress of graft polymerization...

Details Determining the reaction progress of graft polymerization... Determining the reaction progress of graft polymerization...

2006-10-17

2006-10-17

Gakh, Yelena G. (Department: 1743)

Chemistry: analytical and immunological testing

Nuclear magnetic resonance, electron spin resonance or other...

C436S085000, C436S034000

Reexamination Certificate

active

07122379

ABSTRACT:
A method of using Raman Spectra for determining the progress of a graft polymerization reaction is disclosed. The method entails (a) measuring at the beginning of the reaction and at a plurality of time intervals in the course of the reaction, continuously and on-site, the Raman spectrum in the wave number range of 100 to 4000 cm−1of one or more of the monomers and/or polymers entailed in the reaction and of at least one internal standard and (b) recording the spectra and (c) adding reaction partners necessary to the reaction continuously and/or discontinuously and (d) calculating the change in concentration of the monomers and polymers by comparing the spectra of the monomers or polymers with the internal standard.

REFERENCES:
patent: 4125534 (1978-11-01), Yee
patent: 4661383 (1987-04-01), Elsenbaumer et al.
patent: 6072576 (2000-06-01), McDonald et al.
patent: 98/08066 (1998-02-01), None
patent: 01/09201 (2001-02-01), None
“Internal Standards” http://www.chemistry.adelaide.edu.au/external/soc-rel/content/int-std.htm, Sep. 2003.
Wang et al. “Use of water as an internal standard in the direct monitoring of emulsion polymerization by fiber-optic Raman spectroscopy”, Applied Spectroscopy, 1993, v. 47, No. 7, pp. 928-932.
Schlenoff et al. “In-situ monitoring of emulsion and bulk polymerization by fiber optic Raman spectroscopy”, Polymeric Materials Science and Engineering, 1995, v. 72, pp. 52-53.
Al-Khanbashi et al. “Application of in-line fiber-optic Raman spectroscopy to monitoring emulsion polymerization reaction”, Applied Spectroscopy Reviews, 1998, v. 33, No. 1&2, pp. 116-131.
Van den Brink et al. “Emulsion (Co) polymerization of styrene and butyl acrylate monitored by on-line Raman spectroscopy”, Macromolecular Symposia (2000), 150(Polymers in Dispersed Media), 121-126.
Bauer et al. “On-line monitoring of a latex emulsion polymerization by fiber-optic FT-Raman spectroscopy. Part I: calibration”, Applied Spectroscopy (2000), 54(4), 528-535.
Van den Brink et al. “On-line monitoring and composition control of the emulsion copolymerization of VeoVA 9 and butyl acrylate by Raman spectroscopy”, Polymer Reaction Engineering (2001), 9(2), 101-133.
Fredericks et al. “Raman Mapping of plasma treated and grafted polymer surfaces” Proceedings of SPIE, Oct. 2001, v. 4469, pp. 1-8; Conference date Jul. 31, 2001.
Journal of Applied Polymer Science, vol. 79, (date unavailable) 2001, pp. 426-436, Mark Van Den Brink et al, “Measurement of Partial Conversions During the Solution Copolymerization of Styrene and Butyl Acrylate Using On-Line Raman Spectroscopy”.

Affiliated with

Also associated with

Rating

Determining the reaction progress of graft polymerization... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Determining the reaction progress of graft polymerization..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determining the reaction progress of graft polymerization... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3706121