Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Reexamination Certificate
2005-05-09
2009-12-15
Green, Anthony J (Department: 1793)
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
C423S511000, C423S566200
Reexamination Certificate
active
07632347
ABSTRACT:
The present invention relates to an ultramarine pigment synthesis process which includes a calcination step in the absence of air of a mixture including zeolite A, possibly sodium sulfide and/or sulfur, possibly hydroxide ions, and polysulfides of composition Na2Sn, n being a number greater than 1, the product resulting from the calcination reaction being cooled in the absence of air, leading to obtaining a raw product which includes the synthesized ultramarine pigment, polysulfides and possibly sulfur. The Na2Snpolysulfides taking part in the calcination reaction come at least in part from the recycling of the polysulfides and possibly of the sulfur present in excess in the aforesaid raw product.
REFERENCES:
patent: 2535057 (1950-12-01), Gessler et al.
patent: 2544693 (1951-03-01), Kumins
patent: 2544695 (1951-03-01), Kumins
patent: 2738288 (1956-03-01), Kumins
patent: 2759844 (1956-08-01), Kumins
patent: 54-142238 (1979-11-01), None
Kowalak et al, “Synthesis of Ultramarine From Synthetic Molecular Sieves”, Colloids and Surfaces A:Physiochemical and Engineering Aspects 101, pp. 179-195 (1995). [no month].
Kowalak et al, “Zeolite Matrices For Pigments”, Studies in Surface Science and Catalysis, vol. 125, pp. 753-760 (1999). [no month].
Database CA ′Online!, Chemical Abstracts Service, Columbus, Ohio, US; Kowalak, S., et al.:Zeolite matrices for pigments, XP002313628, accession No. 132:209172; andStudies in Surface Science and Catalysis, 125 (Porous Materials in Environmentally Friendly Processes), 753-760 Coden: SSCTDM; ISSN: 0167-2991, 1999.
Database CA ′Online!, Chemical Abstracts Service, Columbus, Ohio, US; Kowalak, S. et al.:Synthesis of ultramarine from synthetic molecular sieves, XP002313629, Database accession No. 123:304993, &Colloids and Surfaces, A: Physicochemical and Engineering Aspects, 101(2/3), 179-85 Coden: CPEAEH; ISSN: 0927-7757, 1995.
Coopman Patrice J.
Demortier Antoine M.
Duhayon Christian L.
Hautecoeur Noëlle S.
Lede Bertrand J.
Green Anthony J
Holliday Pigments SA
Kenyon & Kenyon LLP
LandOfFree
Ultramarine pigment synthesis process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultramarine pigment synthesis process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultramarine pigment synthesis process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4119127