Abstract: The present invention refers to an optical film comprising one or more polyarylates having at least some units represented by the general structure: 1
Type:
Application
Filed:
April 10, 2001
Publication date:
July 11, 2002
Applicant:
FERRANIA S.p.A.
Inventors:
Simone Angiolini, Mauro Avidano, Paolo Salvarani, Roberto Bracco
Abstract: The invention provides a process for preparing a filled halobutyl elastomer which comprises admixing a halobutyl elastomer, particles of filler and a silane that has at least one hydroxyl group or hydrolysable group attached to a silicon atom of the silane, and curing the filled halobutyl elastomer with sulphur. The invention also provides a filled composition that has improved properties when compared with known carbon black filled elastomeric compositions.
Type:
Application
Filed:
December 20, 2000
Publication date:
July 26, 2001
Inventors:
William Hopkins, Carl Walter von Hellens, Ahti Koski, John Rausa
Abstract: Described are coatings, composite structures containing coatings, and compositions for preparing and methods of preparing coatings and composite structures, wherein the compositions comprise inorganic oxide particles and polymerizable brominated compounds, and coatings comprise inorganic oxide particles and a brominated polymer.
Type:
Grant
Filed:
May 27, 1999
Date of Patent:
July 17, 2001
Inventors:
David B. Olson, Bettie C. Fong, Soonkun Kang, David S. Arney, Zayn Bilkadi
Abstract: A method for producing a hydroxyl-terminated (meth) acrylic polymer which comprises converting a halogen atom in a terminal structure of the general formula (1)
—CH2—C(R1)(CO2R2)(X) (1)
wherein R1 is hydrogen or methyl, R2 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or aralkyl containing 7 to 20 carbon atoms, and X is chlorine, bromine or iodine, of a (meth)acrylic polymer obtained by polymerizing a (meth)acrylic monomer using an organic halide or a halogenated sulfonyl compound as an initiator and, as a catalyst, a metal complex with a central metal selected from the elements belonging to the groups 8, 9, 10 and 11 in the periodic table, into a hydroxyl-containing substituent.
The present invention can provide, in an easy and simple manner, a (meth)acrylic polymer which is hydroxyl-terminated at both ends in a high proportion and which has been difficult to produce in the prior art. It can give a cured product with good curing characteristics.
Abstract: The invention concerns a dispersion powder composition which is redispersible in water and is made from water-insoluble organic polymers, the composition being characterized in that it contains 0.1 to 30% by wt., relative to the weight of the organic polymers, of one ormore silicon compounds which are dispersible in water and which have a boiling point at normal pressure of 160° C., selected from the group comprising the silanes, polysilanes, oligosiloxanes, carbosilanes, polycarbosilanes, carbosiloxanes, polycarbosiloxanes and polysilylenedisiloxanes. The invention also concerns methods for manufacturing such compositions and their use.
Type:
Grant
Filed:
October 3, 1996
Date of Patent:
February 20, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Herbert Eck, Klaus Adler, Heinrich Hopf, Franz Jodlbauer, Dieter Gerhardinger