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Posts Tagged ‘esstech’
Wednesday, January 11th, 2012
From its simple origins in the early 1990′s as a line of highly customized raw materials for compounders of “new generation” restorative dental composites to now a major manufacturer of customized UV/EB curable materials serving an ever-wider range of industries, Esstech, Inc. has indeed been a very successful “experiment”. It is my pleasure to announce two additions to the Esstech Team of talented professionals.
Last year, Bruce Farina, a 21-year veteran of Sartomer Company, joined Esstech as Senior Vice President and we are now pleased to announce that, effective as of January 1, 2012, Bruce has been given full operational responsibility for Esstech as President/COO. Bruce’s two decades of experience at Sartomer ranged from Manufacturing Manager through various titles and functions to Vice President with, most recently, overall global responsibility for all of Sartomer’s photocure (UV/EB) business.
Bruce is taking over for Howard Slaff who, after a very successful leadership tenure at Esstech, is moving ten miles south down I-95 to assume the President/COO responsibilities being vacated by the retiring Mike Norquist at Esstech’s sister company, Esschem, Inc..
I am also very pleased to announce that Bruce has successfully recruited Dr. Mike Idacavage as Esstech’s new Director of Business Development. Mike Idacavage may be known to some of you as the immediate past-President of RadTech North America and is a lifetime member of RadTech’s Board of Directors. Mike’s “day job” for the last 15 years was with Cytec Industries (and, pre-merger, UCB Chemicals), most recently as Cytec’s Principal Research Fellow.
Those of us involved with Esstech over the years could not be more excited with the Team now in place and with their commitment to its next phase of customer-centric growth!
Please check us out at www.esstechinc.com !
Henry M. (“Tac”) Justi
Chairman
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Tags: adhesives, coatins, dental research, esstech, oligomers, Photopolymers, steriolithography, UV Curable
Posted in Announcements | No Comments »
Monday, December 5th, 2011
Join us in Sau Paulo for the CIOSP dental show, January 28-31.
We are planning a very exciting and busy trip so contact us immediately to schedule a meeting.
Hope to see you there!
Tags: dental research, esstech, tradeshow
Posted in Announcements | No Comments »
Friday, November 11th, 2011
Do not sacrifice conversion and the risk of residual monomer contamination to achieve low-shrink properties. New testing has demonstrated that EXOTHANE(TM) Elastomers have low shrinkage stress, low volumetric shrinkage, AND high conversion.
- Exothane 8, 94% Conversion, 3% Shrinkage, high % elongation
- Exothane 26, 96% Conversion, 4% Shrinkage, increased flexibility/toughness
- Exothane 32, 97% Conversion, 3% Shrinkage, low color and low viscosity
This new data, in addition to superior toughness, tensilse strength and percent elongation make the EXOTHANE product line ideal form many applications including, low-shrink dental restoratives, non-curling industrial coatings, unique UV nail enhancements, tougher anaerobic adhesives and more.
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Tags: dental research, esstech, EXOTHANE, EXOTHANE Elastomers, High conversion, low shrinkage stress, low volumetric shrinkage, Monomer, polymerization, Resin, Shrinkage, stress, tough
Posted in Announcements | No Comments »
Friday, November 11th, 2011
Item Code: X-846-0000
Product Name: Methacryloyloxyethyl Maleate
CAS#: 51978-15-5
EINECS(I): 257-569-5
INCI: HEMA Maleate
HEMA maleate is a carboxylic acid-containing methacrylate that can function as an alternative to PMDM. It has been used in anaerobic adhesive applications and is approved for use in cosmetic products.
The carboxylic acid group of X-846-0000 has the ability to improve adhesion to keratin. Its’ monomethacrylate functionality allows it to be incorporated into soak-off systems without detriment to “removability”. HEMA maleate’s low viscosity also makes it an ideal, reactive diluents.
Contact us directly to discuss your application and request samples, techsupport@esstechinc.com.
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Tags: Adhesive Monomer, diluent, esstech, Monofunctional, Monomer, X-846-0000
Posted in Uncategorized | No Comments »
Thursday, October 13th, 2011
Characterization of a nanoparticle-filled resin for application in scan-LED-technology
Eva Kolb, Claudia Kummerlöwe and Martin Klare
Abstract
Scan-LED-technology is a new rapid prototyping technique with increasing applications in the production of custom-made medical products. The present work is dealing with the examination of a silica/ urethandimethacrylate (UDMA) nanocomposite for application in scan-LED-technology. The use of specific LED in a photo-DSC unit enables the simulation of crucial parameters of nanoparticle-filled resins for their application in scan-LED-technology. The conversion of double bonds during the curing reaction and the rate of conversion were studied as a function of radiation intensity, silica nanoparticle content, and silanization of the nanoparticles with 3-methacryloyloxypropyl-trimethoxysilane (MPTMS). The conversion of double bonds is increasing with increasing radiation intensity. The increasing conversion of the nanoparticle-filled resins is discussed as a combined effect of increasing nanoparticle content, alternated initiator/double bond ratio and increasing radiation intensity. A significant dependence of the reaction rate on nanoparticle content could not be found. Only for the unfilled resin, the rate was increasing at higher radiation intensities. The influence of residual solvent on conversion and rate of reaction was also analyzed. TGA measurements combined with FTIR were used to study the silanization of the nanoparticles. The silane layer thickness on the surface of the silica nanoparticles was determined. -
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Tags: esstech, lithography, nanocomposite, rapid prototyping, UDMA, urethane, X-850-0000
Posted in Research Paper | No Comments »
Wednesday, September 28th, 2011
Optimize Photocurable Mechanical Properties
EXOTHANE™ Elastomers represent the most recent advances in Esstech’s urethane chemistry. These versatile materials offer performance enhancements across a broad range of demanding formulations.
- Exothane 8, low color urethane, creates a “soft” yet tough polymer with high elongation
- Exothane 26, high flexibility when cured, has the ability to re-adhere at lower tensile strength
- Exothane 24, high crosslink capacity, low in color and viscosity and very high Shore D hardness
- Exothane 32, very low in color and viscosity, provides improved flexibility
Like many of Esstech’s other products, potential applications involving EXOTHANE™ Elastomers can vary across many industries from medical devices and nail gel enhancements to radiation-curable coatings.
Contact us directly to discuss your unique requirements and request our EXOTHANE™ Elastomers Product Literature.
Phone: 1-800-245-3800 or 610-521-3800
EMail: techsupport@esstechinc.com.
Esstech products are available to our European customers via, Esschem Europe
(www.esschem-europe.com).
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Tags: composite, esstech, EXOTHANE, low-shrink, Monomer, urethane, X-726-0000, X-850-0000, X-891-0000, X-892-0000, X-893-0000, X-894-0000
Posted in Announcements | No Comments »
Wednesday, September 21st, 2011
Esstech will be attending the UV.EB East Show in Syracuse, NY from October 4th to the 5th.
We look forward to seeing everyone, making appointments and discussing our new EXOTHANE(TM) Elastomers product line .
If you would like to schedule a meeting with use, please send an email to techsupport@esstechinc.com.
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Tags: esstech, EXOTHANE Elastomers, Monomer, Radiation Curable, tradeshow, UV Curable
Posted in Announcements | No Comments »
Friday, August 12th, 2011
Esstech has again, re-qualified for the Safety and Health Achievement Recognition Program or SHARP. SHARP is an OSHA cooperative program that recognizes companies who operate an exemplary safety and health management system. Click here the logo to learn more about this achievement.
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Tags: esstech
Posted in Announcements | No Comments »
Thursday, July 28th, 2011
Click on the following link for a pdf download of our poster.
Physical Properties of a New Low Shrink Resin
A. JOHNSTON1, F. RUEGGEBERG2, H.R. RAWLS3, H. SLAFF1, T. BARCLIFT1, and J. DUFF1, 1Esstech Inc, Essington, PA, 2Medical College of Georgia, Augusta, GA, 3University of Texas Health Science Center at San Antonio, San Antonio, TX
Introduction:
The improvement of aesthetic restorative dental composites can be pursued on many fronts. A composite is made from multiple components but, generally, it is a blend of finely ground glasses and reactive monomers. The monomers cure to provide a continuous polymer matrix for retaining the glass. Together they present a hard surface with the capability to survive in the oral environment. Failure of these composites is a complex phenomenon. While clinical failure can occur when the adhesive force between the composite and the vital dental tissue is compromised, failure also occurs when stresses overcome the cohesive strength of the continuous phase of the mixture. Catastrophic material failure can occur as wear against complementary dentition that slowly erodes the surface. Those cracks through the polymer phase lead to composite failure. To improve the composite properties, a new monomer has been introduced, FIT 852 Resin™, that can provide greater toughness in the polymer, greater extent of cure in the polymer, lower shrinkage stress and no change in composite material manufacture.
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Tags: composite, conversion, dental research, esstech, low-shrink, Shrinkage, urethane, X-852-0000
Posted in Research Paper | No Comments »
Tuesday, July 5th, 2011
A new approach in self-etching adhesive formulations: Replacing HEMA for surfactant dimethacrylate monomers
Cesar Henrique Zanchi,, Eliseu Aldrighi Münchow, Fabricio Aulo Ogliari, Rodrigo Varella de Carvalho, Stefano Chersoni, Carlo Prati, Flávio Fernando Demarco, Evandro Piva
Article first published online: 28 JUN 2011. DOI: 10.1002/jbm.b.31871. © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2011.
Abstract
This study evaluated the influence of surfactant dimethacrylates (SD) on the resin-to-dentin microtensile bond strength (μTBS) and characterized the interfacial micromorphology of the hybrid layer of the experimental HEMA-free self-etching systems. Five experimental HEMA-free two-step self-etching systems containing different SD (Bis-EMA 10, Bis-EMA 30, PEG 400, PEG 1000, and PEG 400 UDMA [Esstech Code X-726-0000]) and a HEMA-containing system (control) were compared. Each experimental adhesive system was applied and resin composite restorations were incrementally built up in bovine incisors. After 24 h, restored teeth were sectioned to obtain 24 sticks per group. Thereafter, the specimens were subjected to the μTBS test. Data (MPa) were analyzed by One-way ANOVA and Tukey’s test. Adhesive-dentin interfaces were analyzed through Scanning Electron Microscopy (SEM). The adhesive system formulated with PEG 400 UDMA produced μTBS similar to the HEMA-containing group and statistically higher than the HEMA-free groups. Similar failure percentages were observed in the PEG 400 UDMA and the control group. In the SEM analysis, all the adhesive systems presented similar partially demineralized hybrid layer (1.5–3.0 μm thickness) with well-formed resin tags. All SD presented reasonable initial μTBS, with the PEG 400 UDMA being a promising monomer to be considered as a HEMA substitute in adhesive systems compositions.
Link: http://onlinelibrary.wiley.com/doi/10.1002/jbm.b.31871/full
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Tags: bis-EMA, bisEMA, esstech, Extended UDMA, PEG 400 UDMA, urethane, X-726-0000
Posted in Research Paper | No Comments »
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