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151 results about "Co initiator" patented technology
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Novel radiation curable compositions
Radiation curable compositions with a polymeric co-initiator are disclosed comprising a dendritic polymer core with at least one co-initiating functional group as an end group. The dendritic polymeric core is preferably a hyperbranched polymer. Industrial applications include varnishes, lacquers and printing inks. The polymeric co-initiator is especially useful in radiation curable inkjet ink.
Owner:AGFA NV
Tailoring material composition for optimization of application-specific switchable holograms
InactiveUS7175780B1Improve efficiencyOptical qualityLiquid crystal compositionsThin material handlingCrystallographyChemical composition
The process described herein offers the optimizing of performance parameters of holograms, such as reducing scattering effects in a polymer-dispersed liquid crystal optical element. In the process, an interfacial tension agent is added to a polymer-dispersed liquid crystal material. The polymer-dispersed liquid crystal material has at least one acrylic acid monomer, at least one type of liquid crystal material, a photoinitiator dye, and a co-initiator. The polymer-dispersed liquid crystal material is subjected to a polymerization. The interfacial tension agent reduces the size of liquid crystal droplets formed within the polymer-dispersed liquid crystal optical element during polymerization.
Owner:LEIDOS
Poly-beta-peptides from functionalized beta-lactam monomers and antibacterial compositions containing same
InactiveUS20070087404A1Control over polymerization conditionLarge molecular weightAntibacterial agentsPeptide/protein ingredientsMonomerTetrahydrofuran
Disclosed is a method of making β-polypeptides. The method includes polymerizing β-lactam-containing monomers in the presence of a base initiator and a co-initiator which is not a metal-containing molecule to yield the product β-polypeptides. Specifically disclosed are methods wherein the base initiator is potassium t-butoxide, lithium bis(trimethylsilyl)amide (LiN(TMS)2), potassium bis(trimethyl-silyl)amide, and sodium ethoxide, and the reaction is carried out in a solvent such as chloroform, dichloromethane, dimethylsulfoxide, or tetrahydrofuran.
Owner:WISCONSIN ALUMNI RES FOUND
Novel radiation curable compositions
A radiation curable composition comprising a curable compound, a photo-initiator and a co-initiator, characterized in that said co-initiator is a oligomer or polymer having a repeating unit, said repeating unit comprising at least two tertiary amines, and said polymer being prepared by the polycondensation of di- or oligofunctional Michael acceptors with mono- or oligofunctional aliphatic primary amines or with di- or oligofunctional aliphatic secondary amines or with a mixture thereof.
Owner:AGFA NV
Infrared-sensitive composition for printing plate precursors
InactiveUS20040259027A1Photomechanical apparatusPhotosensitive material auxillary/base layersOligomerChemical compound
The present invention provides an infrared-sensitive composition including an initiator system comprising: (a) an infrared absorbing compound; (b) a radical producing compound; and (c) a carboxylic acid co-initiator compound. In some embodiments of the invention, the co-initiator is a monocarboxylic acid. In other embodiments of the present invention, the co-initiator is a polycarboxylic acid. The infrared-sensitive composition further includes a polymeric binder and a free radical polymerizable system consisting of at least one member selected from unsaturated free radical polymerizable monomers, oligomers which are free radical polymerizable, and polymers containing C=C bonds in the back bone and / or in the side chain groups. In some embodiments of the present invention, the acid number of the polymeric binder is 70 mg KOH / g or less. The present invention further provides a printing plate precursor, a process for preparing the printing plate and a method of producing an image.
Owner:KODAK POLYCHROME GRAPHICS
Polylactic acid radical biological degradable material and method for preparing same
The present invention belongs to the field of biodegradable material preparing and modifying technology, and is especially one kind of polylactic acid-based biodegradable material and its preparation process. The polylactic acid-based biodegradable material is prepared with lactide, tin catalyst / initiator and end hydroxyl group co-initiator in certain molar ratio and through polymerization in a reaction kettle inside nitrogen atmosphere at 110-180 deg.c for 8-20 hr. The polymer has rigid segment or flexible segment accounting for 0.1-30 mol% weight average molecular weight greater than 150,000, and possesses biodegradability, improved flexibility, raised shock resistance, etc. The present invention provides one new way for the copolymerizing modification of polylactic acid.
Owner:SHANGHAI TONG JIE LIANG BIOMATERIALS
Radiation curable compositions
Radiation curable compositions with a polymeric co-initiator are disclosed comprising a dendritic polymer core with at least one co-initiating functional group as an end group. The dendritic polymeric core is preferably a hyperbranched polymer. Industrial applications include varnishes, lacquers and printing inks. The polymeric co-initiator is especially useful in radiation curable inkjet ink.
Owner:AGFA NV
Photopolymerizable compositions for electroless plating methods
ActiveUS9207533B2Low efficiencyEasy to usePhotosensitive materials for photomechanical apparatusPhotosensitizerElectron donor
Owner:EASTMAN KODAK CO
Radiation curable compositions for food applications
ActiveUS20100304149A1Process stabilityComposition is stableImpression capsSynthetic resin layered productsPhotoinitiatorCo initiator
A liquid radiation curable composition for inkjet printing includes a photoinitiating system consisting of one or more diffusion hindered photoinitiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric or polymeric initiators, and polymerizable initiators, and one or more polymerizable co-initiators, wherein at least one of the polymerizable co-initiators is a polymerizable aromatic tertiary amine. Inkjet inks, an inkjet printing process, and packaging materials may include the liquid radiation curable composition.
Owner:AGFA NV
Novel polymeric co-initiators
A novel polymeric co-initiator is disclosed comprising a dendritic polymer core with at least one co-initiating functional group as an end group. The polymeric co-initiators are useful in radiation curable compositions such as varnishes, lacquers and printing inks and are especially useful in radiation curable inkjet inks. The dendritic polymeric core is preferably a hyperbranched polymer.
Owner:AGFA NV
Method for preparing colorful three-dimensional hologram based on holographic polymer dispersed liquid crystal grating
InactiveUS20140154614A1High diffraction efficiencyHigh resolutionPhotomechanical apparatusHologram recording materialGratingPhotosensitizer
A method for preparing a colorful three-dimensional hologram based on holographic polymer dispersed liquid crystal gratings comprises: first, in a 441.6 nm laser interference field, preparing with holography a holographic master (7) which stores the reflected (or transmitted) light wave information (amplitude and phase) of an object captured; then using an object light (6) to irradiate the holographic master at a Bragg angle to generate a diffraction light (8); and using the diffraction light and a reference light (10) to simultaneously irradiate a holographic base board (9) comprising a photosensitizer, a co-initiator, a monomer capable of free radical polymerization , and a liquid crystal so that, when total optical paths of the two laser beams reaching the holographic base board are equivalent to each other, optical coherence occurs between the two laser beams on the holographic base board, thereby obtaining a colorful three-dimensional hologram based on holographic polymer dispersed liquid crystal gratings from which an image of the captured object can be observed in the sunlight.
Owner:HUAZHONG UNIV OF SCI & TECH
Transdermal delivery device disposal system
The present invention relates to a transdermal delivery device disposal system for disposing of a transdermal delivery device containing at least one pharmaceutically active component. The disposal system contains at least one sheet or substrate on which an adhesive is coated; and one or more of the following components: (a) monomer, and optionally comonomer(s), to be polymerized; (b) an initiator, and optionally co-initiator(s), to initiate the polymerization; (c) at least one crosslinking agent to crosslink the (co)polymer; and (d) at least one deactivating agent to chemically alter, to degrade, and / or to deactivate the active component(s) contained in the transdermal delivery device, such as an opioid antagonist or an opioid agonist deactivating agent so that the euphoric effects of the active component(s) contained in the transdermal delivery device are at least temporarily inhibited, diminished, or halted in vivo, wherein at least one adhesive-coated sheet or substrate adheres to, immobilizes, or isolates, and prevents, inhibits, or diminishes the misuse or abuse of the active component contained in, at least one transdermal delivery device.
Owner:BAKER CARL J +1
Preparation method of polycarboxylic acid water reducer with high workability
The invention discloses a preparation method of a polycarboxylic acid water reducer with high workability. The preparation method comprises the following steps: mixing acrylic acid with active monomers with high workability, adding an oxidant and co-initiator into the mixture, dropwise adding a mixed solution of unsaturated monomers, chain transferring agent, reducing agent, and water at a low temperature; carrying out reactions to obtain segmented copolymer (intermediate), finally adding methoxy polyethylene glycol and a catalyst to carry out esterification and grafting, and finally neutralizing the products. Through molecular structure design, active monomers with good workability are introduced into polycarboxylic acid water reducer; low temperature polymerization is performed at first, then high temperature esterification is carried out, damage rate of double bonds can be reduced, copolymerization degree is high, and the produced water reducer has good workability and high water reducing rate. The industrial production technology is simple, the production period is largely reduced, and production process is green, environment-friendly, and pollution-free.
Owner:KZJ NEW MATERIALS GROUP CO LTD
Environmental-friendly pigment printing binding agent and preparation method thereof
ActiveCN102757525ASimple preparation processReduce production energy consumptionDyeing processCross-linkFunctional monomer
The invention relates to an environmentally-friendly pigment printing binding agent and a preparation method thereof. The preparation method includes the steps as follows: (1), monomers are provided, and include 45-85% of soft monomers, 10-35% of hard monomers, 2-7% of functional monomers, and 3-13% of cross linking monomers according to the total mass of monomers; (2), an emulsion polymerization reaction is carried out on part of soft monomers, hard monomers and functional monomers at the temperature of 60-90 DEG C and in the presence of an radical initiator; and (3), an emulsion polymerization reaction is carried out on the rest of soft monomers, hard monomers and functional monomers as well as cross linking monomers at the temperature of 25-45 DEG C, and in the presence of an intermediate product obtained in the step (2), the radical initiator and co-initiator compounds, thereby obtaining the pigment printing binding agent product. The binding agent is used for extra deep coloured printings, and solves the problem that the rubbing fastness is insufficient when the existing environmental-friendly binding agent is used for theextra deep coloured printings.
Owner:SHANGHAI ARGUS NEW MATERIAL CO LTD
Radiation curable compositions for food packaging
ActiveUS9550898B2High sensitivityPerformance of the radiation curable composition was minimizedFlexible coversWrappersVinyl etherMethacrylate
An inkjet printing method includes the steps of jetting ink dots on a substrate of a plurality- of radiation curable inkjet inks having a viscosity of no more than 50 mPa·s at 25° C. and a shear rate of 90 s−1, the plurality of radiation curable inkjet inks including a) at least one non-polymerizable, non-polymeric bisacylphosphine oxide present in a concentration of no more than 4.0 wt % based on the total weight of radiation curable inkjet ink; b) at least one monomer including at least one vinyl ether group and at least one polymerizable group selected from the group consisting of an acrylate group -and a methacrylate group; and c) at least one polymerizable or polymeric thioxanthone, with the proviso that if the at least one polymerizable or polymeric thioxanthone contains no tertiary amine group that the radiation curable composition further includes at least one tertiary amine co-initiator selected from the group consisting of ethylhexyl-4-dimethylaminobenzoate, a polymerizable co-initiator containing a tertiary amine and a polymeric co-initiator containing a tertiary amine; and (2) fully curing the jetted ink dots using one or more UV LEDs.
Owner:AGFA NV
Self-adhesive dental cement
ActiveUS20090048364A1Efficient use ofEasy to controlImpression capsPhotomechanical apparatusPhotoinitiatorOxidizing agent
A dental, paste / paste self-adhesive cement includes a polymerizable acidic monomer or monomer mixtures; a polymerizable non-acidic monomer or monomer mixtures, a photo-initiator and / or a co-initiator, a reducing agent such as a benzoylthiourea and other substituted benzoylthiourea, an oxidizing agent, a thermal stabilizer and a glass filler.
Owner:DENTSPLY SIRONA INC
Light-cured three dimensional printing material and preparation method thereof
The invention discloses a light-cured three dimensional printing material and a preparation method thereof. The light-cured three dimensional printing material comprises, by mass, 40-45 parts of polyester modified epoxy acrylate, 8-12 parts of cycloaliphatic epoxy resin, 8-10 parts of trihydroxymethylpropyl trimethylacrylate, 16-20 parts of 1,6-hexanediol diacrylate, 2-8 parts of triethyleneglycol divinyl ether, 1.5-2 parts of isopropylthioxanthone, 1.5-2 parts of 2-phenyl-2,2-dimethylamino-1-(4-morpholinylphenyl)-1-butanone, 1.5-2 parts of a reactive tertiary amine co-initiator, 0.5-2.7 parts of 4-isobutylphenyl-4'-methylphenyliodonium hexafluorophosphate, 0.5-2 parts of an anthraquinone derivative, 0.5-2 parts of a promoter and 4-8 parts of a flexibilizer. Shaped parts made by using the light-cured three dimensional printing material have the advantages of low shrinkage, high toughness and high shaping precision.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +2
Ultraviolet photosensitive composite initiation system and use thereof
An ultraviolet light-sensitive co-initiator system and an application of the same belong to the photosensitive high molecular material technical field. The co-initiator system consists of a hexaarylbisimidazole compound, a sensitizing agent and a hydrogen donor, wherein the weight of the hexaarylbisimidazole compound is 10 to 60 times of that of the hydrogen donor, while the weight of the sensitizing agent is 1 to 20 times of that of the hydrogen donor. The co-initiator system is used to make a combination capable of ultraviolet polymerization and containing (a) at least one unsaturated compound capable of ultraviolet polymerization, (b) at least one ultraviolet light-sensitive co-initiator system as described in the claim of right 1, and (c) at least one polymerization inhibitor selected from phenols, quinones and organometallic compounds. The ultraviolet light-sensitive co-initiator system can be used as vinyl monomeric ultraviolet polymerization initiator, or can be used in coating materials, printing ink, adhesive photo-curing coating materials, photoresist, printing plate materials, photo-imaging materials, holographic recording materials, optical materials, decorative materials, packaging materials and three-dimensional modeling materials.
Owner:JIANGNAN UNIV +1
Preparation method of color three-dimensional hologram based on holographic polymer dispersed liquid crystal grating
Owner:HUAZHONG UNIV OF SCI & TECH
UV-cured soft coating paint composition and preparation method thereof
ActiveCN106047138AFast curingGood film formingPolyurea/polyurethane coatingsPolymer scienceUltraviolet lights
The invention relates to UV-cured soft coating paint and a preparation method thereof, and provides an ultraviolet light cured optical fiber internal coating composition. The composition is prepared from low polymer, diluted monomer, catalyst, initiator and co-initiator, wherein the catalyst specially points to organotin catalyst with usage amount of 1-2%; the co-initiator has to be active amine with usage amount of 1-3%; the low polymer is a reaction product of the following materials: hydroxyl-containing acrylate, aliphatic isocyanate, poly(epsilon-caprolactone glycol), polymerization inhibitor and catalyst, wherein the number average molecular weight of the low polymer is about 2000g / mol, and the molecular weight of the poly(epsilon-caprolactone glycol) is about 1000. A cured membrane of the composition has glass transition temperature of about 5DEG C-10DEG C, modulus of 8MPa-10MPa and close bend of greater than 100 times.
Owner:瑞通高分子科技(浙江)有限公司
Visible light cured dental restorative composition and preparation method thereof
InactiveCN105456039ALong operating timeEasy to useImpression capsDentistry preparationsUltravioletResin-Based Composite
Owner:JIANGSU SHENGYING NEW MATERIAL
Aromatic polyester modified polyether polyol and preparation method thereof
The invention provides modified polyether polyol and a preparation method thereof. The preparation method comprises the following step of: under the condition of no oxygen and the protection of nitrogen, performing ring-opening polymerization on an epoxy compound with 2 to 4 carbon atoms by taking aromatic polyether polyol and polyol with the functionality of 3 to 9 as a co-initiator in the presence of amine catalysts to obtain the modified polyether polyol. The method overcomes the defects of low intersolubility of the conventional polyether polyol and a physical foaming agent, or low compression strength and dimensional stability of polyurethane prepared from tolylenediamine or vegetable oil modified polyether polyol. The modified polyether polyol can be widely applied to production of rigid polyurethane foam, and has quite good intersolubility with fluorine-free pentane, such as cyclopentane, isopentane, n-pentane and other mixed foaming agents; and the prepared rigid polyurethane foam has high compression strength, dimensional stability and toughness, and is more fine and smooth.
Owner:SHANGHAI DONGDA POLYURETHANE
Novel radiation curable compositions
ActiveUS20100041784A1Acceptable viscosityReduce the amount requiredOrganic chemistryPhotomechanical apparatusPhotoinitiatorCo initiator
A radiation curable composition comprising a curable compound, a photo-initiator and a co-initiator characterized in that said co-initiator is represented by Formula (I), wherein MA is the residue of a mono- or oligofunctional Michael acceptor; L is a divalent linking group positioning the two tertiary amines in a 1-3 to 1-10 position, with the proviso that both amines are aliphatic; R1, R2 and R3 independently represent an optionally substituted alkyl group, an optionally substituted alkenyl group, an optionally substituted alkynyl group or an optionally substituted (hetero) alkaryl group; any two of R1, R2 and R3 may represent the necessary atoms to form a ring; any two of R1, R2 and R3 may represent the necessary atoms to form a ring with any of the atoms of the linking group L; n is an integer ranging from 1 to 6.
Owner:AGFA NV
Controllable cation polymerizing method of vinyl monomers
The invention relates to a controllable cation polymerizing method, which can be used for cation polymerization of vinyl monomers and preparing polymers of the vinyl monomers. In the invention, Lewis acid is used as a co-initiation system for carrying out the cation polymerization reaction of the vinyl monomers (including isobutene, styrene, a-alkyl styrene or p-alkyl styrene and isoprene) in alkane, halohydrocarbon or a mixed solvent of the alkane and the halohydrocarbon. Generally through adding a proper amount of 1,1-diphenylethylene in the initiation system, the initiation efficiency can be improved effectively, the consumption of initiation initiators and co-initiators can be reduced, and secondary reaction can be reduced so that the molecular weight distribution of polymerisates is obviously narrowed.
Owner:BEIJING UNIV OF CHEM TECH
Polymeric co-initiators
Owner:AGFA NV
High-mechanical-performance degradable polyurethane material based on isosorbide and polylactic acid and synthesis method of high-mechanical-performance degradable polyurethane material
The invention discloses a high-mechanical-performance degradable polyurethane material based on isosorbide and polylactic acid and a synthesis method of the high-mechanical-performance degradable polyurethane material.The synthesis method of the high-mechanical-performance degradable polyurethane material includes the following steps that isosorbide serves as a co-initiator to initiate lactide ring opening polymerization to form polylactic-acid-based macromolecular diol, then aliphatic diisocyanate serves as a coupling agent, isosorbide serves as a chain extender, and the degradable polyurethane material based on isosorbide and polylactic acid is prepared through a two-step method.Isosorbide serves as the chain extender, so that the mechanical performance of the polyurethane material is improved while the reaction is controllable and no cross-linking occurs in the synthesis process of the polyurethane material.
Owner:CHONGQING UNIV
Preparation material of high-efficiency holographic polymer dispersed liquid crystal Bragg volume grating and preparation method thereof
The invention relates to a preparation material of a high-efficiency holographic polymer dispersed liquid crystal Bragg volume grating and a preparation method thereof. The preparation material is prepared by the following steps of: forming a mixed emulsion by an acrylate monomer with polyfunctional groups, a crosslinking agent, an initiator, a co-initiator and nematic liquid crystal; wafering the mixed emulsion into a liquid crystal box made of two transparent conductive panes; arranging the liquid crystal box in an interference light field of green laser for holographic exposure; accurately controlling exposure intensity and time; and then, enabling the liquid crystal box to stand still in a dark room for a certain time. The prepared high-efficiency holographic polymer dispersed liquid crystal Bragg volume grating has the diffraction efficiency over 95 percent and the scattering and high-order diffraction loss lower than 1 percent.
Owner:FUDAN UNIV
Visible-light sensitive macro-initiator
Type II photoinitiators interact with co-initiating agents to initiate polymerization in ethylenically unsaturated resins when exposed to irradiation. In the current invention, said photoinitiators are bound to the surface or synthesized on the surface of polymer or inorganic particles or molecules, creating a complex which is multifunctional with respect to the photo-initiating capability. The mixture of said photoinitiator in said monomer / co-initiator mixture will demonstrate a low level of elution of initiator species from the cured polymer in liquid media.
Owner:CONDON JOHN R
Process for preparing polyether polylol and application of prepared product
The invention provides a preparation method of polyether polyol and the application of the obtained product. The method is prepared by reacting a co-initiator and an oxyalkylene under the action of a basic catalyst. Put palm oil or the mixture of palm oil and soybean oil and polyol or amine compound or the mixture of both into the reactor as a co-initiator, add catalyst and oxidized olefin to the above reactor, and co-initiate in the presence of the catalyst The initiator reacts with oxyalkylene at a certain temperature and pressure to prepare polyether polyol. The raw materials of the method for preparing polyether polyol in the invention are cheap and easy to obtain, the product quality is stable, the use performance is good, and the polyurethane foam plastic prepared by the method has good degradability.
Owner:JURONG NINGWU CHEM
Method for preparing polyurethane polyether polyol by waste oil
InactiveCN102336901AAchieve recyclingReduce usageSugar derivativesOrganic compound preparationPolyolFiltration
The invention discloses a method for preparing polyurethane polyether polyol by waste oil. In the method, the polyurethane polyether polyol is prepared through the reaction of co-initiators and oxyalkylene under the effect of a basic catalyst. Firstly, the waste oil is heated to raise the temperature, and is vacuumized for 3-6 hours when the temperature is controlled between 110 and 130 DEG C, then an adsorbent is added, the mixture is stirred for 1-3 hours, impurities are adsorbed, and refined waste oil is obtained after filtration; and then the waste oil or the mixture of the waste oil and vegetable oil, and polyol or amine compound or the mixture of the polyol and the amine compound are used as the co-initiators to be added into a reactor, a catalyst and the oxyalkylene are added, and in the presence of the catalyst, the co-initiators and the oxyalkylene react at a certain temperature under certain pressure to prepare the polyether polyol. The polyether polyol preparing method disclosed by the invention has the advantages that raw materials are cheap and easy to get, the product has stable quality and good use performance, and the degradability of the prepared polyurethane foam plastics is good.
Owner:JURONG NINGWU NEW MATERIAL CO LTD BY SHARES
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