A process for the bulk polymerization, in the absence of any solvent, of a reactant containing azide functionality and a reactant containing a terminal alkyne functionality, in the presence of Cu (I) catalyst or in the presence of a Cu(II) catalyst without a reducing agent, is described. Polymerization can be achieved at temperatures less than 100° C., which is suitable for low temperature cures. A controlled synthesis for low molecular weight oligomers is disclosed.
Compounds of formula (I): wherein Ar represents an, optionally substituted, aryl or heteroaryl group, R represents an, optionally substituted, aryl or heteroaryl group, an optionally substituted straight or branched chain C
1.10
-alkyl, R
1
is H or methyl, X is an extender group, n is 0 or an integer between 1 and 12 inclusive, A is a polyol residue wherein the unsubstituted polyol from which the residue is derived has at least y OH groups, and y is an integer>1, can easily be prepared, and are useful as synergists in radiation curing.
[EN] UV CURABLE INKJET INKS AND INKJET PRINTING METHODS<br/>[FR] ENCRES POUR JET D'ENCRE DURCISSABLE AUX UV ET PROCÉDÉS D'IMPRESSION À JET D'ENCRE
申请人:AGFA NV
公开号:WO2022106100A1
公开(公告)日:2022-05-27
A UV curable inkjet ink including a free radical polymerizable compound and an acyl phosphine oxide initiator wherein the acyl phosphine oxide initiator includes an acyl group selected from the group consisting of a benzoyl group substituted by an urea group or an oxalylamide group; a 2,6-dimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,6-dimethoxy benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,4,6-trimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; and a 2,4,6-trimethoxybenzoyl group substituted in position 3 by an urea group or an oxalylamide group wherein the urea group and the oxalylamide group include a tertiary amine group positioning a phosporus atom of the acylphosphine oxide initiator in a 1 to Z position, where position 1 is defined as that of the phosphorus atom and position Z is defined as the nitrogen atom of the tertiary amine group with Z representing an integer of at least 11; and that the acyl phosphine oxide initiator contains no more than two photoinitiating moieties having a phosphine oxide group.
INKJET INK SET FOR A METHOD OF MANUFACTURING A PACKAGING
申请人:Agfa Graphics NV
公开号:EP3173246A1
公开(公告)日:2017-05-31
A method for manufacturing a packaging (1, 9) including the steps of: jetting one or more free radical UV curable pigmented colour inkjet inks from an inkjet ink set on the packaging (2); UV curing the one or more jetted free radical UV curable pigmented colour inkjet inks; jetting at least one colour forming inkjet ink from the inkjet ink set on the packaging or on the one or more UV cured free radical UV curable pigmented colour inkjet inks; and forming a colour image (10, 11) by a heat treatment (8) of the at least one jetted colour forming inkjet ink. Suitable inkjet ink sets are also described.
Photocurable composition, denture base, and plate denture
申请人:Mitsui Chemicals, Inc.
公开号:US10973742B2
公开(公告)日:2021-04-13
A photocurable composition for manufacturing a dental prosthesis by stereolithography, including: a photopolymerization initiator; and a (meth)acrylic monomer component including an acrylic monomer (X) having no aromatic rings and having a ring structure other than an aromatic ring and two or more acryloyloxy groups in one molecule and having an Mw of from 200 to 800, and at least one of a (meth)acrylic monomer (A) having one or more ether bonds and two (meth)acryloyloxy groups in one molecule and having a defined Mw, a (meth)acrylic monomer (B) having a ring structure other than an aromatic ring and one (meth)acryloyloxy group in one molecule and having a defined Mw, a (meth)acrylic monomer (C) having a hydrocarbon skeleton and two (meth)acryloyloxy groups in one molecule and having a defined Mw, and a (meth)acrylic monomer (D) having one or more aromatic rings and one (meth)acryloyloxy group in one molecule and having a Mw.