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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7402639 | 1-alkoxy-polyalkyl-piperidine derivatives and their use as polymerization regulators The present invention relates to 1-alkoxy-polyalkyl-peridine derivatives containing a structural element of formula (I) G1, G2, G3, G4 are independently C1-C6 | 07/22/2008 |
| 7300962 | Hydrogels formed by non-covalent linkages In one aspect, the present invention provides hydrogels comprising polymer molecules and bridging molecules, wherein substantially all the polymer molecules are cross-linked by hydrogen bonds between polymer molecules and bridging molecules, wherein each bridging mo... | 11/27/2007 |
| 7276543 | Radiation curable resin composition The present invention relates to a coated optical fiber comprising a glass optical fiber with a single protective coating or a combination of an inner and an outer primary coating applied thereon and optionally with a colored coating subsequently applied thereon whe... | 10/02/2007 |
| 7160966 | 2,2,6,6 Diethyl-dimethyl-1-alkoxy-piperidine compounds and their corresponding 1-oxides The present invention relates to selected 1-alkoxy-2,2 diethyl-6,6 dimethyl piperidine and 1-alkoxy-2,6 diethyl-2,3,6 trimethyl piperidine derivatives which are substituted in the 4 position by an oxygen or nitrogen atom; a polymerizable composition comprising a) at... | 01/09/2007 |
| 6949590 | Hydrogels formed by non-covalent linkages In one aspect, the present invention provides hydrogels comprising polymer molecules and bridging molecules, wherein substantially all the polymer molecules are cross-linked by hydrogen bonds between polymer molecules and bridging molecules, wherein each bridging mo... | 09/27/2005 |
| 6896937 | Radiation-curable inks Radiation-curable ink compositions and methods of printing including the compositions are disclosed. In some embodiments, a radiation-curable hot melt ink composition includes a colorant, a polymerizable monomer, and a photoinitiating system. The photoinitiating sys... | 05/24/2005 |
| 6797739 | Triazene-based compound comprising functionalized alkylthio groups, and photopolymerization initiator The preset invention relates to a photosensitive composition, and provides a triazine-based compound comprising new functionalized alkylthio groups of which long term storage characteristics at room temperature as well as photochemical activity as a photopolymerizat... | 09/28/2004 |
| 6756166 | Photosensitive resin composition and printed wiring board Disclosed is a photosensitive resin composition which can be developed using a dilute aqueous alkaline solution after ultraviolet ray exposure, is excellent in pot life, capable of preventing deposits from being generated in a cured coated film, capable of widening ... | 06/29/2004 |
| 6562464 | Utilization of phenylglyoxalic acid esters as photoinitiators The use of phenylglyoxalic esters of the formula I ##STR1## in which the two radicals R1 and A are as defined in the description as photoinitiators in powder coating materials for exterior applications. The compounds of the formula I show little pro... | 05/13/2003 |
| 6559223 | Hydrogels and methods for their production Forming graft copolymers in water using labeling of water soluble polymers with photoinitiators. Water soluble polymers can form environmentally responsive hydrophobically stimulated cages. The cages, which contain initiating radicals after irradiation, m... | 05/06/2003 |
| 6495298 | Photopolymerizable resin compositions and use thereof This invention relates to a photopolymerizable resin composition containing resin component (A) composed of a resin and/or a resin-forming ingredient and a photopolymerization initiator (B) wherein the component (A) comprises an addition-polymerizable com... | 12/17/2002 |
| 6239190 | Enhancement of activation for `biological` tissue adhesives, bonding agents and sealants using "color change" chromophores There is disclosed a method for effecting a reaction by irradiating a substance which absorbs the radiant energy until the reaction is complete and the absorbency of the material changes so as to reduce or cease absorption of further radiant energy.... | 05/29/2001 |
| 6228560 | Photosensitive resin composition and photosensitive element using the same A photosensitive resin composition comprising (A) a binder polymer having carboxyl groups, (B) a photopolymerizable compound having at least one polymerizable ethylenically unsaturated group in the molecule, and (C) a photoinitiator can provide a film exc... | 05/08/2001 |
| 6060216 | Photosensitive resin composition and photosensitive element using the same A photosensitive resin composition comprising (A) a binder polymer having carboxyl groups, (B) a photopolymerizable compound having at least one polymerizable ethylenically unsaturated group in the molecule, and (C) a photoinitiator can provide a film exc... | 05/09/2000 |
| 5962547 | Reactive radiation- or thermally-initiated cationically-curable epoxide monomers and compositions made from those monomers Radiation- or thermally-initiated cationically-curable styrene oxides of the structure ##STR1## are suitable for use in cationically curable adhesive and coating compositions.... | 10/05/1999 |
| 5770345 | Photoresist having increased sensitivity and use thereof The sensitivity of a photoresist to actinic light is improved by the addition of certain dyes. The photoresist includes a polymer matrix, a photosensitive acid generator and at least one compound selected from the group consisting of dyes containing at le... | 06/23/1998 |
| 5753412 | Photoresist having increased sensitivity and use thereof The sensitivity of a photoresist to actinic light is improved by the addition of certain dyes. The photoresist includes a polymer matrix, a photosensitive acid generator and at least one compound selected from the group consisting of dyes containing at le... | 05/19/1998 |
| 5719202 | Polymerizable N,N'-substituted piperazine acrylamide compounds Polymerizable compounds based on N-acylamido-piperazines are provided. Such compounds have the formula: ##STR1## wherein: R1, R2, and R3 are each independently selected from the group consisting of hydrogen and lower ... | 02/17/1998 |
| 5686220 | Photo-curing composition and photosensitive capsule A photo-curing composition including an image forming material, an ethylenically unsaturated monomer which is curable by polymerization thereof, a polymerization initiator which initiates the polymerization of the monomer, and two or more photosensitizers... | 11/11/1997 |
| 5599652 | Peroxycarboxylic ester initiators derived from nitrogen heterocycles Peroxycarboxylic ester photoinitiators derived from aromatic nitrogen containing heterocyclic carboxylic acids are described. The heterocyclic aromatic ring may contain additional nitrogen atoms, be fused with another aromatic ring system, be substituted ... | 02/04/1997 |
| 5593812 | Photoresist having increased sensitivity and use thereof The sensitivity of a photoresist to actinic light is improved by the addition of certain dyes. The photoresist includes a polymer matrix, a photosensitive acid generator and at least one compound selected from the group consisting of dyes containing at le... | 01/14/1997 |
| 5527921 | Peroxycarboxylic ester initiators derived from nitrogen heterocycles Peroxycarboxylic ester photoinitiators derived from aromatic nitrogen containing heterocyclic carboxylic acids are described. The heterocyclic aromatic ring may contain additional nitrogen atoms, be fused with another aromatic ring system, be substituted ... | 06/18/1996 |
| 5407783 | Photoimageable compositions containing substituted 1, 2 dihalogenated ethanes for enhanced printout image Photoimageable compositions, photoimageable resist compositions, and photoimageable resist elements that afford enhanced, storage stable printout images are disclosed which include a substituted 1,2-dibromoethane and a leuco dye.... | 04/18/1995 |
| 5284735 | Photopolymerizable composition A photopolymerizable composition having high sensitivity and broad development latitude comprises a radical-polymerizable compound having two or more ethylenically unsaturated double bonds in the molecule, a photoinitiator, an organic high-molecular compo... | 02/08/1994 |
| 5202221 | Light-sensitive composition The present invention relates to a light-sensitive composition comprising (a) a photo-crosslinkable polymer having a maleimido group at a side chain and (b) a sensitizer such as the following compounds: ##STR1## The present invention provides a light... | 04/13/1993 |
| 5064747 | Sensitizers for photocrosslinkable polymers A light-sensitive composition comprises a photo-crosslinkable polymer having a photo-dimerizable unsaturated bond and a sensitizer represented by the following general formula (I): ##STR1## wherein R1 and R2 each independently r... | 11/12/1991 |
| 5057398 | Photopolymerizable composition and photopolymerizable recording material containing same A photopolymerizable composition that contains a polymeric binder, a polymerizable compound and photoinitiator combination comprising an N-heterocyclic compound and a halogen compound corresponding to one of the folowing formulas I and II ##STR1## ... | 10/15/1991 |
| 5049481 | Sensitizers for photopolymerizable compositions A photopolymerizable composition comprising (i) a polymerizable compound having an addition polymerizable unsaturated bond, (ii) a compound represented by formula (Ia): ##STR1## a compound represented by formula (Ib): ##STR2## or a compound... | 09/17/1991 |
| 5043363 | Active energy ray-curing resin composition An active energy ray-curing resin composition comprises (i) a heat-crosslinkable linear copolymer comprising 5 to 30 mol % of a monomer represented by the general formula I shown below and 5 to 50 mol % of a monomer represented by the general formula II s... | 08/27/1991 |
| 5017626 | Visible light-curing polyester resin composition A visible light-curing polyester resin composition comprises an unsaturated polyester resin and a photocuring agent composed of an -diketone, a benzyidimethyl ketal, and at least one member selected from the group consisting of (1) 2-(dimethylamino... | 05/21/1991 |
| 4992547 | Aminoaryl ketone photoinitiators The photopolymerizable mixture described contains (A) at least one ethylenically unsaturated photopolymerisable compound, (B) a photoinitiator of the formula I ##STR1## and (C) a photosensitiser from the group of aromatic carbonyl compounds having a tripl... | 02/12/1991 |
| 4956221 | UV curable conformal coating with moisture shadow cure A conformal coating composition is made from a mixture of acrylamide functional polydimethylsiloxane, a methacrylate functional/dialkoxy polydiorganosiloxane, reactive diluent including isobornyl acrylate, cyclohexyl acrylate, and 2- ethylhexyl acrylate; ... | 09/11/1990 |
| 4891301 | Photopolymerizable recording materials, photoresist layers and lithographic printing plates based theron, and novel 4-quinazolone compounds Abstract of the disclosure: Novel photopolymerizable recording materials suitable in particular for producing photoresist layers and lithographic printing plates are composed of one or more photopolymerizable, olefinically unsaturated organic compounds, a... | 01/02/1990 |
| 4824875 | UV curable conformal coating with moisture shadow cure A conformal coating composition is made from a mixture of acrylamide functional polydimethylsiloxane, a methacrylate functional/dialkoxy polydiorganosiloxane, reactive diluent including isobornyl acrylate, cyclohexyl acrylate, and 2-ethylhexyl acrylate; a... | 04/25/1989 |
| 4770942 | Silicone-coated release paper and a method for the preparation thereof The invention provides a silicone-coated release paper having a coating surface film of an organopolysiloxane composition curable by irradiation with ultraviolet light or electron beams to give a fully cured film resistant to migration of the organopolysi... | 09/13/1988 |
| 4755450 | Spectral sensitizing dyes in photopolymerizable systems Spectral sensitizing dyes which sensitize photoinitiators and disperse in aqueous solutions are desirable in photosensitive systems where precise color rendition is important.... | 07/05/1988 |
| 4737445 | Photopolymerizable composition and photopolymerizable recording material containing said composition In photopolymerizable composition that contains, as the essential constituents, (a) a polymeric binder, (b) a polymerizable compound, and, (c) as the photoinitiator, a 2,3-dihydro-1H-cyclopenta(b)quinoline represented the formula ##STR1## in which R | 04/12/1988 |
| 4701300 | Polyamide ester photoresist formulations of enhanced sensitivity Photoresist formulations for forming relief structures from highly heat-resistant polyimide polymers, containing in an organic solvent in essence at least (a) one polyamide ester prepolymer carrying photopolymerizable radicals (b) a radiation-reactive copolyme... | 10/20/1987 |
| 4680249 | Photopolymerizable composition containing carboxy benzotriazole Improved adhesion to a substrate is obtained employing a photopolymerizable composition containing a carboxy benzotriazole.... | 07/14/1987 |
| 4632897 | Photopolymerizable recording material suitable for the production of photoresist layers Photopolymerizable recording materials which are suitable for the production of photoresist layers, and contain one or more thermoplastic vinyl polymers as the binder, one or more low molecular weight, ethylenically unsaturated, photopolymerizable compoun... | 12/30/1986 |
