Abstract: The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a carboxylate metal salt. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular, the polymerization catalyst system is supported on a carrier. More particularly, the polymerization catalyst comprises a bulky ligand metallocene-type catalyst system.
Type:
Grant
Filed:
July 10, 1998
Date of Patent:
April 8, 2008
Assignee:
Univation Technologies, LLC
Inventors:
Agapios Kyriacos Agapiou, Chi-I Kuo, David Michael Glowczwski, Steven Kent Ackerman
Abstract: Photothermographic articles containing interfacial barriers comprising a layer of a polymeric organic acid containing carboxyl and/or sulfo groups in direct contact with an adjacent layer comprising a basic polymer capable of forming hydrogen bonds with the polymeric organic acid are disclosed. A crosslinked barrier is formed at the interface between the layers which has substantial impermeability to chemical diffusion.
Type:
Grant
Filed:
July 16, 1992
Date of Patent:
January 4, 1994
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: Various photothermographic elements are provided containing a transparent substrate; image receiving layers; dry silver layers; interlayers; and a translucent or opacifying layer. The translucent or opacifying layer can occupy a variety of positions in the photothermographic element relative to the dry silver layers. The translucent or opacifying layers serve to help produce a reflection print upon exposure of the photothermographic element to actinic light and subsequent heating of the exposed element for image development and dye transfer.
Type:
Grant
Filed:
July 16, 1992
Date of Patent:
November 23, 1993
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Raymond J. Kenney, Takuzo Ishida, Richard C. Cotner
Abstract: A photographic processing composition for processing a silver halide photographic light-sensitive material. The composition contains at least one metal chelating compound formed from a metal salt of Fe(III) and a monoamine compound or salt thereof represented by formula (I-a') or (I-b'): ##STR1## wherein R represents a substituent; Q represents a group of non-metal atoms necessary to form a heterocyclic ring; X and Y each represents a carbon atom or a nitrogen atom; L.sub.1 ' and L.sub.2 ' each represents an alkylene group; M.sub.1, M.sub.2, M.sub.3 each represents a hydrogen atom or a cation; and u represents 0, 1, 2, 3, or 4.
Abstract: Disclosed is a method for the development of a silver halide light-sensitive black and white material, wherein a silver halide light-sensitive material is developed in the presence of at least one compound represented by the following general formula (I): ##STR1## wherein M represents a hydrogen atom, an alkali metal atom, an ammonium group or a group which is cleaved under alkaline conditions; L represents a bivalent organic group comprising an alkylene group, an alkenylene group, an ether group, a thioether group, --CO--, --CS-- or --NR-- (wherein R represents a hydrogen atom or an alkyl group) alone or a combination of two or more of them; X represents an amino group, an ammonio group, a hydroxyl group or a heterocyclic group; and n represents 0 or 1.