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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Krepski; Larry R.
Address:
White Bear Lake, MN
No. of patents:
59
Patents:


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Patent Number Title Of Patent Date Issued
RE34652 Fluorinated, acrylamide-functional monomers June 28, 1994
Novel fluorinated, acrylamide monomers are prepared from 2-alkenyl azlactones reacted with fluorinated alcohols. The novel monomers have the formula ##STR1## wherein R.sup.1 and R.sup.6 are independently hydrogen or methyl;R.sup.2 and R.sup.3 independently can be an alkyl, cycloalkyl
RE34348 Fluorinated polymers derived from acrylamide-functional monomers August 17, 1993
Novel fluorinated, acrylamide monomers are prepared from 2-alkenyl azlactones reacted with fluorinated alcohols. The novel monomers have the formula ##STR1## wherein R.sup.1 and R.sup.6 are independently hydrogen or methyl; R.sup.2 and R.sup.3 independently can be an alkyl, cyclo
RE32952 Method of preparing N-acryloyl-.alpha.-amino acids June 13, 1989
A novel, one-pot procedure for the preparation of N-acryloyl-.alpha.-amino acids involves the steps of:(i) reacting a ketone, an ammonium salt, and a cyanide salt in water, optionally in the presence of ammonium hydroxide and a co-solvent, to form an aminonitrile;(ii) acryloylating the a
7579359 1-alkoxy 1H-imidazo ring systems and methods August 25, 2009
Imidazo-containing compounds (e.g., imidazonaphthyridines, imidazopyridines, imidazoquinolines, and imidazote-trahydroquinolines) with an alkoxy substituent at the 1-position, pharmaceutical compositions containing the compounds and methods of use of these compounds as immunomodulato
7557177 Ring-opened azlactone initiators for atom transfer radical polymerization July 7, 2009
Initiators for atom transfer radical polymerizations are described. The initiators have an azlactone or ring-opened azlactone moiety to provide telechelic (co)polymers.
7368487 Aqueous ink jet printable compositions May 6, 2008
Ink jet printable compositions comprise an aqueous vehicle, particles of a self-crosslinking polymer, and optional colorant. In one embodiment, an ink jet printable ink may comprise an aqueous vehicle, a colorant, and a silyl-terminated sulfopoly(ester-urethane) polymer. In another e
7294742 Ring-opened azlactone initiators for atom transfer radical polymerization November 13, 2007
Initiators for atom transfer radical polymerizations are described. The initiators have an azlactone or ring-opened azlactone moiety to provide telechelic (co)polymers.
7166696 Solid phase synthesis supports and methods January 23, 2007
Functionalized supports and methods for solid phase synthesis. Preferably, the functionalized support is azlactone-functionalized.
6992217 Ring-opened azlactone initiators for atom transfer radical polymerization January 31, 2006
Initiators for atom transfer radical polymerizations are described. The initiators have an azlactone or ring-opened azlactone moiety to provide telechelic (co)polymers.
6991851 Dry-peelable temporary protective coatings January 31, 2006
A dry-strippable coating composition can be incorporated into a composite article and comprises a dried water-borne polyurethane dispersion including a release additive comprising a releasing co-solvent or other selected release material. When water is removed from the polyurethane d
6969749 Azlactone initiators for atom transfer radical polymerization November 29, 2005
Initiators for atom transfer radical polymerizations are described. The initiators have an azlactone or ring-opened azlactone moiety to provide telechelic (co)polymers.
6894133 Azlactone initiators for atom transfer radical polymerization May 17, 2005
Initiators for atom transfer radical polymerizations are described. The initiators have an azlactone or ring-opened azlactone moiety to provide telechelic (co)polymers.
6787635 Solid phase synthesis supports and methods September 7, 2004
Functionalized supports and methods for solid phase synthesis. Preferably, the functionalized support is azlactone-functionalized.
6692823 Microfibrillated articles comprising hydrophillic component February 17, 2004
Described are hydrophilic fibrillated articles that include melt-processable polymer and hydrophilic component such as hydrophilic surfactant or hydrophilic polymer, as well as methods of preparing such articles.
6416838 Compositions and articles made therefrom July 9, 2002
The present invention relates to a composition comprising a first monomer having the formula CH.sub.2.dbd.CHCOOR.sup.1, where R.sup.1 is a linear alkyl group having from 9 to 16 carbon atoms or a branched alkyl group having from 9 to 30 carbon atoms, and whose homopolymer has a Tg less t
6245922 Chromophoric photocrosslinking compound June 12, 2001
A photoactive compound that is the reaction product of an alkenyl azlactone compound and a nucleophilic aromatic ketone is described. Mer units derived from this compound can be used, for example, to crosslink via a hydrogen abstracting mechanism acrylic polymers in which they are in
6139594 Abrasive article with tie coat and method October 31, 2000
An abrasive article is provided that includes a tie coat which improves adhesion between an abrasive layer and a backing in the abrasive article. The tie coat is preferably formed from a tie coat precursor comprising a sulfopoly(ester-urethane) component comprising in its backbone at lea
5993935 Covalently reactive particles incorporated in a continous porous matrix November 30, 1999
A composite article is provided having covalently reactive particles incorporated in a continuous, porous matrix. The reactive particles have surfaces of covalently reactive functional groups capable of directly forming covalent chemical bonds with ligands without need for an interme
5951749 Water-based pigmented inks September 14, 1999
Water-based pigmented inks are disclosed. Such inks are formed from water-based dispersions of pigment particles having novel dispersants therein. The dispersions are formed from the reaction product of an amino acid compound with a nitrogen reactive compound with subsequent hydrolysis
5929160 Method for reducing water uptake in silyl terminated sulfopoly(ester-urethanes) July 27, 1999
A method of decreasing the water uptake in a sulfopoly(ester-urethane) by preparing said sulfopoly(ester-urethane) from a chain extended sulfopolyester polyol which itself has been prepared in a two-step method, said sulfopoly(ester-urethane) comprising in its backbone at least one n
5840106 Water-based pigmented inks November 24, 1998
Water-based pigmented inks are disclosed. Such inks are formed from water-based dispersions of pigment particles having novel dispersants therein. The dispersions are formed from the reaction product of an alkenyl azlactone with an N-substituted amino acid compound. Subsequent to the
5747626 Silyl terminated sulfopoly(ester-urethane pavement marking compositions May 5, 1998
A pavement marking composition comprises a sulfopoly(ester-urethane) polymer which comprises in its backbone at least one non-terminal arylene or alkylene group comprising a pendant sulfonic acid group or salt thereof, the polymer of said pavement marking composition being terminated
5714632 Azlactone-based surfactants February 3, 1998
A compound of the formula ##STR1## wherein Q is an organic group of at least two carbon atoms having at least m substituents,m is 1, 2, 3, 4, 5 or 6, andn is 0 or 1.R.sup.3 is H or methyl,R.sup.8 and R.sup.9 are independently hydrogen, alkyl group or aryl,R.sup.12 and R.sup.13 are indepe
5705676 Chromogenic leuco redox-dye-releasing compounds for photothermographic elements January 6, 1998
A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible source of silver;(c) a chromogenic leuco dye reducing age
5696289 Blocked leuco dyes for photothermographic elements December 9, 1997
A photothermographic element containing a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer is provided. The emulsion layer comprises:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible source of silver;(c) a leu
5492805 Blocked leuco dyes for photothermographic elements February 20, 1996
A photothermographic element containing a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer is provided. The emulsion layer comprises:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible source of silver;(c) a leu
5492804 Chromogenic leuco redox-dye-releasing compounds for photothermographic elements February 20, 1996
A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible source of silver;(c) a chromogenic leuco dye reducing age
5403902 Polymeric supports April 4, 1995
Azlactone-functional polymer supports are useful reactive supports for the attachment of functional materials to provide novel adduct beads. The adduct beads are useful as complexing agents, catalysts, polymeric reagents, chromatographic supports, and as enzyme- or other biologically
5336742 Polymeric supports August 9, 1994
Azlactone-functional polymer supports are useful reactive supports for the attachment of functional materials to provide novel adduct beads. The adduct beads are useful as complexing agents, catalysts, polymeric reagents, chromatographic supports, and as enzyme- or other biologically
5314975 Fluorinated acrylamide silane monomers and polymers May 24, 1994
The present invention provides novel fluorinated acrylamide silane monomers which are useful as adhesion promoting agents in optical fiber cladding compositions. Polymerization of the novel monomers, optionally in the presence compatible ethylenically-unsaturated monomers, provides h
5300420 Stabilizers for photothermography with nitrile blocking groups April 5, 1994
Photothermographic compositions comprising a photographic silver halide, an organic silver salt, and a reducing agent for the organic silver salt, display improved stabilty in the presence of a compound having a nucleus of the formula: ##STR1## wherein: A represents any monovalen
5292840 Polymeric supports March 8, 1994
Azlactone-functional polymer supports are useful reactive supports for the attachment of functional materials to provide novel adduct beads. The adduct beads are useful as complexing agents, catalysts, polymeric reagents, chromatographic supports, and as enzyme- or other biologically
5292514 Azlactone-functional substrates, corneal prostheses, and manufacture and use thereof March 8, 1994
Azlactone-functional substrates, (especially hydrogels), mammalian body implants, and methods of making and using them are disclosed. The azlactone-functional substrates are the reaction product of substrates having azlactone-reactive nucleophilic surfaces and a multi-functional azla
5268473 Azlactone Michael adducts December 7, 1993
Azlactone-functional Michael adducts are disclosed which are the Michael reaction products of 2-alkenyl azlactones and Michael donors selected from carbon and nitrogen nucleophiles. Reaction products which contain a plurality of azlactone groups are useful as step growth monomers in
5239013 Nonlinear optically active polymers August 24, 1993
Organic groups covalently bound to a polymer backbone provide second or third order nonlinear susceptibilities to the polymer. In another aspect, a method is disclosed for providing the novel polymers of the invention. Polymers of the invention can be directionally oriented to provide us
5216084 Nonlinear optically active polymers June 1, 1993
Organic groups covalently bound to a polymer backbone provide second or third order nonlinear susceptibilities to the polymer. In another aspect, a method is disclosed for providing the novel polymers of the invention. Polymers of the invention can be directionally oriented to provide us
5210248 Fluorinated acrylamide silane monomers and polymers May 11, 1993
The present invention provides novel fluorinated acrylamide silane monomers which are useful as adhesion promoting agents in optical fiber cladding compositions. Polymerization of the novel monomers, optionally in the presence compatible ethylenically-unsaturated monomers, provides h
5194623 Azlactone based photographic reagents March 16, 1993
Novel compounds derived from azlactones act as precursors for photographically active groups. The active groups are released at an appropriate time in the use of photographic and photothermographic systems.
5175081 Post-processsing stabilization of photothermographic emulsions December 29, 1992
The post-processing stability of silver halide photothermographic emulsions is enhanced by the presence of stabilizing amounts of certain azlactones.
5158866 Post-processing stabilization of photothermographic emulsions with amido compounds October 27, 1992
The post-processing stability of silver halide photothermographic emulsions is enhanced by the presence of stabilizing amounts of certain structurally defined amido compounds.
5149806 Azlactone Michael adducts September 22, 1992
Azlactone-functional Michael adducts are disclosed which are the Michael reaction products of 2-alkenyl azlactones and Michael donors selected from carbon and nitrogen nucleophiles. Reaction products which contain a plurality of azlactone groups are useful as step growth monomers in
5081197 Oligo(2-alkenyl azlactones) January 14, 1992
This invention provides novel azlactone-functional oligomers of 2-alkenyl azlactones in which oligomerization has occurred predominantly via the 2-alkenyl group. Oligomerization of the 2-alkenyl group provides oligomers having 2 to 15 mer units with predominantly carbon-carbon backbone
5045615 Fluorinated polymers derived from acrylamide-functional monomers September 3, 1991
Novel fluorinated, acrylamide monomers are prepared from 2-alkenyl azlactones reacted with fluorinated alcohols. The novel monomers have the formula ##STR1## wherein R.sup.1 and R.sup.6 are independently hydrogen or methyl; R.sup.2 and R.sup.3 independently can be an alkyl, cyclo
4971424 Radiation curable cladding compositions November 20, 1990
Novel optical fiber cladding compositions containing fluorinated acrylamide monomers are described. The claddings are liquids at room temperature which possess excellent coating viscosities in the pre-polymerized state and are polymerized by actinic radiation.
4946962 Bis(thiazolinethiones) August 7, 1990
Two classes of certain compounds known as bis(thiazolinethiones), more particularly bis[(3,4-disubstituted)-thiazole-2-thiones], have thiazolinethione heterocycle units linked by alkylene, arylene, or arene groups or by a carbon to carbon single bond. These compounds are useful in th
4898923 Polypyridinium copolymer February 6, 1990
A novel class of polymers comprises one or more dipyridinium units, having the formula ##STR1## contained within the main polymer backbone where Ar.sup.1, Ar.sup.2, and Ar.sup.3 are aromatic or heteroaromatic nuclei each of which can consist of one ring or two fused or catenated
4871824 Variably crosslinked polymeric supports October 3, 1989
Azlactone-functional polymer beads are useful reactive supports for the attachment of functional materials to provide novel adduct beads. The adduct beads are useful as complexing agents, catalysts, polymeric reagents, chromatographic supports, and as enzyme- or other biomacromolecul
4852969 Silyl 2-amidoacetate and silyl 3-amidopropionate compositions and optical fiber made therefrom August 1, 1989
The present invention provides novel silyl 2-amidoacetates and silyl 3-amidopropionates which are the reaction products of azlactone and silanol reactants. The novel products result from nucleophilic addition of a soluble or insoluble, low or high molecular weight reactant containing
4841021 Polypyridinium June 20, 1989
A novel class of polymers comprises one or more dipyridinium units, having the formula ##STR1## contained within the main polymer backbone where Ar.sup.1, Ar.sup.2, and Ar.sup.3 are aromatic or heteroaromatic nuclei each of which can consist of one ring or two fused or catenated
4816554 Poly(amido methyl-benzazole) March 28, 1989
A class of polymers comprises one or more 2-amidomethylbenzazole units, ##STR1## contained within the main polymer backbone, wherein Ar is Ar.sup.1 or Ar.sup.2, wherein Ar.sup.1 is a tetravalent aromatic nucleus having two pairs of valences, the members of each pair being situated on
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