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Radically Polymerizable Materials For The Production Of Dental Molding With Little Discoloration

Resumen de: US2025002631A1

A free radical polymerization initiator system having at least one monoacylphosphine oxide of formula (I)in whichR1, R2, R3 independently of one another are each H, or a linear or branched C1-C10 alkyl radical or OR6,R4 is a linear or branched C1-C10 alkyl radical, C1-C10 alkoxy radical, cyclohexyl radical or a phenyl, methylphenyl or mesityl radical,R5 is a linear or branched C1-C10 alkyl radical,R6 is a linear or branched C1-C6 alkyl radical, andn is 0, 1, 2 or 3,and at least one phenolic inhibitor, wherein the molar ratio of inhibitor to photoinitiator is in a range from 0.002 to 0.9. The initiator system is particularly suitable for the photopolymerization of radically polymerizable compositions containing urethane group-containing monomers and for the production of dental moldings with low discoloration.

METHOD FOR DEHYDRATING AN ITEM UTILIZING A MOISTURE REMOVING BAG

Resumen de: US2025002241A1

A method for dehydrating an object includes forming a container from a moisture wicking, air impermeable, polyvinyl alcohol sheet. The sheet is folded upon itself to form a folded structure having layer of the sheet in facing relationship with a second layer of the sheet. The first layer is sealed to the second layer along the length of a first open edge. The first layer is sealed to the second layer along the length of a second open edge; the opposed to the first open edge forming an open-ended container at a remaining open edge. An object to be dehydrated is placed in the container and the first layer is sealed to the second layer along the remaining layer.

RADICAL POLYMERISABLE MATERIALS FOR PRODUCING DENTAL MOULDED BODIES WITH LOW DISCOLORATION

Resumen de: EP4484436A1

Initiatorsystem für die radikalische Polymerisation, das mindestens ein Monoacylphosphinoxid der Formel (I) in derR¹, R², R³unabhängig voneinander jeweils H, oder ein linearer oder verzweigter C₁-C₁₀-Alkylrest oder OR⁶ sind,R⁴ein linearer oder verzweigter C₁-C₁₀-Alkyl-, C₁-C₁₀-Alkoxy-, Cyclohexyl-rest oder ein Phenyl-, Methylphenyl- oder Mesityl-Rest ist,R⁵ein linearer oder verzweigter C₁-C₁₀-Alkyl-Rest ist,R⁶ein linearer oder verzweigter C₁-C₆-Alkyl-Rest ist, undn0, 1, 2 oder 3 ist,und mindestens einen phenolischen Inhibitor enthält, wobei dass das Molverhältnis von Inhibitor zu Photoinitiator in einem Bereich von 0,002 bis 0,9 liegt. Das Initiatorsystem eignet sich besonders zur Photopolymerisation radikalisch polymerisierbarer Zusammensetzungen, die urethangruppenhaltige Monomere enthalten, und zur Herstellung von dentalen Formkörpern mit geringer Verfärbung.

Systems and methods for de-oxygenation of a closed container

Resumen de: AU2024266998A1

Abstract An oxygen scavenging device configured to scavenge oxygen from a headspace of a vessel, the oxygen scavenging device comprising: a stopper configured to be removably coupled to the vessel to seal an interior of the vessel, the stopper including structure defining an internal channel, the channel having a first end and a second end, the channel being in fluid communication with the headspace of the vessel when the stopper is coupled to the vessel; and an oxygen scavenging agent fluidly coupled to the first end of the channel, the oxygen scavenging agent being in fluidic contact with a headspace of the vessel via the channel when the oxygen scavenging device is coupled to the vessel to scavenge oxygen therefrom, wherein the oxygen scavenging agent is contained within a sachet. 17014418_1 (GHMatters) P43260AU01

COMPOSITION AND RESIN MOLDED BODY

Nº publicación: EP4477709A1 18/12/2024

Solicitante:

MITSUBISHI CHEM CORP [JP]
Mitsubishi Chemical Corporation

Resumen de: EP4477709A1

A composition comprising a(meth)acrylic polymer (A), an antioxidant (B), and a rubber particle (C), wherein a mass ratio of the rubber particle (C)/antioxidant (B) is more than 8 and less than 1000. A method for producing a resin molded article by molding a composition comprising a (meth)acrylic polymer (A), a rubber particle (C), and an antioxidant (B), wherein the composition has a mass ratio of the rubber particle (C)/antioxidant (B) of more than 8 and less than 1000.