Abstract: The invention relates to novel inorganic brighteners, a process for their preparation and their use for brightening substrates. More specifically, the novel inorganic brighteners are phosphors characterized in that they have (i) an absorption maximum in the range of from 350 to 375 nm; (ii) a steep decrease of the absorption band near 400 nm; (iii) a quantum yield of the phosphorescence of at least 0.8; and (iv) a phosphorescence maximum in the range between 415 and 445 nm.
Type:
Grant
Filed:
April 10, 2007
Date of Patent:
February 3, 2015
Assignee:
Ciba Corp.
Inventors:
Christian Fabian, Bernhard Seider, Hans Reichert
Abstract: Poly methacrylate copolymers are disclosed which comprising from about 60 to about 96 weight percent of a C12-C16 alkyl methacrylate and from about 40 to about 4 weight percent of a C18-C30 alkyl methacrylate and provide excellent low temperature properties to lubricating oils.
Abstract: The present invention provides a composition, which comprises a latent activator. It also provides a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions and marked substrates obtainable by the latter process.
Type:
Grant
Filed:
September 6, 2006
Date of Patent:
August 16, 2011
Assignee:
CIBA Corp.
Inventors:
Karen O'Donoghue, Jonathan Campbell, Alan Platt, John Whitworth, Howard Roger Dungworth, Adolf Käser
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