New selective syntheses of (meth)acrylic monomers: Isocyanates, isocyanurates, carbamates and ureas derivatives
作者:Christine Dubosclard-Gottardi、Paul Caubère、Yves Fort
DOI:10.1016/0040-4020(95)00005-s
日期:1995.2
conveniently obtained by simple condensation of potassium cyanate with ω-halogeno-alkyl (meth)acrylates under appropriated phase transfer catalytic conditions. Depending on the reaction media and the temperature, these isocyanate derivatives may be isolated, trimerized to the corresponding isocyanurates or trapped in situ as carbamates or ureas compounds.
DENTAL MATERIALS ON THE BASIS OF UREA GROUP-CONTAINING MONOMERS
申请人:IVOCLAR VIVADENT AG
公开号:US20160151249A1
公开(公告)日:2016-06-02
Dental material which contains a urea derivative according to general formula I,
in which R
1
and R
2
are in each case independently of each other an aliphatic C
1
-C
15
radical which can be interrupted by —O—, —S—, —CO—O—; X is a radically polymerizable group; Y is a radically polymerizable group or an acid group; n, m are in each case independently of each other 1, 2, or 3.
CURABLE COMPOSITION FOR TRANSFER MATERIAL AND UREA COMPOUND CONTAINING (METH)ACRYLOYL GROUP
申请人:Showa Denko K.K.
公开号:EP2393106A1
公开(公告)日:2011-12-07
The invention provides curable compositions for transfer materials suited for nanoimprinting, which have very high transfer properties in a nanoimprinting process, show high selectivity in dry etching rate between by argon gas and by oxygen gas, and can be fabricated into fine patterns with high throughput. The curable composition for transfer materials includes a compound (A) having at least one skeleton selected from Formulae (1) to (3) below, and a (meth)acryloyl group:
Dentalmaterialien auf der Basis von harnstoffgruppenhaltigen Monomeren
申请人:Ivoclar Vivadent AG
公开号:EP2823801A1
公开(公告)日:2015-01-14
Dentalwerkstoff, der ein Harnstoffderivat gemäß der allgemeinen Formel I enthält,
in der R1 und R2 unabhängig voneinander jeweils ein aliphatischer C1-C15-Rest sind, der durch -O-, -S-, -CO-O-, unterbrochen sein kann; X eine radikalisch polymerisierbare Gruppe ist; Y eine radikalisch polymerisierbare Gruppe oder eine acide Gruppe ist ; n, m unabhängig voneinander jeweils 1, 2, oder 3 sind.
Provided is a composition comprising a pre-formed, hydrolytically susceptible non-addition polyanionic polymer comprising polymer strands formed from at least one ethylenically unsaturated monomer and linking the polymer strands by at least one linking moiety comprising a hydrolytically susceptible bond, wherein at least one of which monomers has: i) one or more functional groups that can be titrated with base to form negatively charged functional groups; or ii) one or more precursor groups that are precursors of the functional groups that can be titrated with base; which precursor groups are converted to the functional groups.