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Product Name: 4-methacryloxyethyl trimellitic anhydride

Synonyms:  4-META, 4-MET (anhydride ring opens becoming di-carboxylic acid)

CAS#: 70293-55-9

4-META is an acidic monomer that can serve as a reactive primer in dental adhesive systems. 4-META is a high performance monomer that interacts with the tooth substrate, creating excellent adhesive bonds to dentin and enamel.  Upon hydrolysis, the anhydride ring opens forming two carboxylic acid groups capable of demineralization as well as salt formation with calcium,  strontium and other metals.

CONTACT US, for a sample.

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Esstech is excited to announce that two of their own will be presenting the upcoming Radtech UV & EB show!  Join us in Chicago and learn more about Esstech’s latest technology, the EXOTHANE™ Elastomers as well as the fundamentals of UV-curable nail gel formulations.

Dr. Mike Idacavage, Director, Business Development
Presenting: Exothane™ Elastomers: A New Series of Versatile Urethane (Meth)acrylates
A novel set of energy curable materials, urethane (meth)acrylates, have been developed. Results of this work indicate that these UV and EB curable urethanes have superior toughness at max strength compared to the controls. In an unusual and unexpected finding, these materials exhibit low shrinkage while at the same time demonstrating high conversion rates. The enhanced properties of the UV curable elastomers, specifically the high percent elongation and hardness, suggest that these novel materials could be used as functional key components to increase the toughness and durability of coatings in a wide range of industrial applications.   The combination of high conversion, low volumetric shrinkage and low shrinkage stress brings interesting attributes to a large variety of applications such as adhesives, photopolymer printing plates, floor coatings, etc.

Dr. Idacavage is also teaching:  UV/EB Professional Short Course: Undergraduate-Level, and chairing the following two sessions: Session: 13 – Photovoltaics & Electronics and Session: 14 – Barrier Coatings & Conductive Films For Flexible Electronics

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Presenter:  Tom Barclift, Director, Sales and Marketing
Presenting: Chemistry and Formulation of UV Curable Nail Enhancements
The nail enhancement industry has evolved from chemical-cure, methyl methacrylate-based liquid and powder systems to UV-curable systems.  These systems are a precise mix of resins, additives, rheological modifiers and photoinitiators. The basic chemistry of these components will be discussed along with examples of typical formulation strategies.

Manufacturing quality adhesive components requires raw materials of uncompromising purity. Their multiple applications place a considerable burden on their performance. The challenge is further heightened by the difficulty in synthesizing these molecules. These unique materials are capable of bridging the gap between hydrophilic and hydrophobic substrates.

X-168-0000:  4-Meta

• CAS# 70293-55-9

4-methacryloxyethyl trimellitic anhydride is an acidic monomer that can serve as a reactive primer in dental adhesive systems. 4-META is a high performance monomer that interacts with the tooth substrate, creating excellent adhesive bonds to dentin and enamel.

X-863-0050:  NTG-GMA Sodium Salt

• CAS # 133736-31-9

The sodium salt of N-tolylglycine glycidyl methacrylate is an adhesive that bridges the gap between hydrophobic and hydrophilic substrates. Na Salt of NTG-GMA is TSCA listed and can be solubilized in acetone.

X-863-0070: NTG-GMA Magnesium Salt

• CAS # 211810-95-6

The Magnesium Salt of this surface active monomer (NTG-GMA) offers double the functionality as the sodium salt of NTG-GMA along with improved color.

The sodium salt and magnesium salt of NTG-GMA are both adhesion promoting monomers that also function as a co-initiators due to their tertiary aromatic amine group.

X-865-0000:  PMDM

• CAS # 51156-91-3

Pyromellitic Dimethacrylate has the ability to bond to various substrates when used alone or in conjunction with our Sodium or Magnesium NTG-GMA salts. Bis(2-Methacryloyloxyethyl) Pyromellitate is TSCA listed and promotes adhesion between metal and plastic substrates in anaerobic adhesives.

X-830-0100:  PMGDM

• CAS # 148019-46-9

Pyromellitic glycerol dimethacrylate is now available without any diluent.  To use this neat material, simply add the desired quantity into the diluent of your choosing or directly into your formulation.  PMGDM, also known as Bis (Glyceryl Dimethacrylate) Pyromellitate, can make an ideal adhesive system using its’ four methacrylate groups and two carboxylic acid groups to bond to various substrates.

Join us in Tampa, FL for the AADR Annual Meeting, March 21-24.

We are excited to present our poster highlighting the latest shrinkage and conversion data of our EXOTHANE Elastomers.  Contact us immediately to schedule a meeting.

Hope to see you there!

Phone:  1-800-245-3800 or 610-521-3800

EMail: techsupport@esstechinc.com.

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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Luis Felipe J. Schneider, Larissa Maria Cavalcante, Scott A. Prah, Carmem S. Pfeifer, Jack L. Ferracane.  “Curing efficiency of dental resin composites formulated with camphorquinone or trimethylbenzoyl-diphenyl-phosphine oxide” Dental Materials.  December 2011:  Online

LINK:  http://dx.doi.org/10.1016/j.dental.2011.11.014

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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!

Phone:  1-800-245-3800 or 610-521-3800
EMail:  techsupport@esstechinc.com. 

Micro-Raman spectroscopic analysis of the degree of conversion of composite resins containing different initiators cured by polywave or monowave LED units

Vesna Miletic ^a, Ario Santini ^b,

^a Clinical Lecturer, University of Belgrade, School of Dentistry, Department of Restorative Odontology and Endodontics, Rankeova 4, Belgrade, Serbia

^b Director of Biomaterials Research, The University of Edinburgh, Edinburgh Postgraduate Dental Institute, Lauriston Place, Edinburgh EH3 9HA, United Kingdom

Received 20 August 2011; revised 28 October 2011; Accepted 30 October 2011. Available online 6 November 2011.

Materials

… Page 5 of 24 Ac ce pte d M an usc rip t 4 Materials and Methods The following materials were
used in the study: bisphenol A bis(2-bydroxy-3- methacryloxypropyl)ether (BisGMA), triethylene
glycol dimethacrylate (TEGDMA), camphorquinone (CQ) (Esstech Inc, Essington, PA …

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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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