Posts Tagged ‘Methacrylate’

Esstech Attends Advanced Energy 2013 Conference

Friday, May 10th, 2013
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It was our pleasure to attend the Advanced Energy 2013 Conference in NYC.

 

We appreciate the many comments and questions we received regarding our presentation, UV CURING – ENABLING PHOTOVOLTAICS. Please Contact Us to continue the discussions!

 

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PRODUCT SPOTLIGHT: HEMA Succinate

Thursday, April 11th, 2013
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Item Code:  X-753-0000

Product Name: Methacryloyloxyethyl SuccinateHEMA Succinate
CAS#: 20882-04-6

EC No: 244-096-4
INCI: HEMA Succinate

SYNONYMS:  mono-2-(Methacryloyloxy)ethyl Succinate, 4-(2-(methacryloyloxy)ethoxy)-4-oxobutanoic acid

HEMA succinate is a carboxylic acid-containing methacrylate that functions as an adhesion promoter in a variety of applications.  X-753-0000 demonstrates an affinity toward bonding with aluminum, cold rolled steel, stainless steel and tin-free steel when cured “neat” or when formulated with one of our urethane acrylates such as EXOTHANE 108.

HEMA succinate’s low viscosity makes it an an easy to incorporate and reactive diluent.  Its’ monomethacrylate functionality allows it to promote adhesion in soak-off or temporary systems while improving “removability”.

Contact us directly to discuss your application and request samples, techsupport@esstechinc.com.

 

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Product Spotlight: “Solid” Urethanes

Wednesday, November 28th, 2012
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In our pursuit of new and innovative materials, Esstech has created an experimental line of “solid” urethanes.  These materials are solid at room temperature, resembling glass both in appearance and the ability to fracture easily into a powder upon impact.  Here are more of our initial observations:

  • Easy to incorporate into a powder coating once fractured.
  • Extrude well under normal conditions and can be ground, sieved or sprayed.
  • Create very clear and colorless coatings.
  • Cured materials have excellent solvent resistance, flexibility and adhesion to polycarbonate and ABS.

 

Esstech offers a multitude of monomers including acrylates, methacrylates, diluents, crosslinkers, oligomers and more!  Contact us to discuss sourcing of existing commercial products or custom development.

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Product Spotlight: 70:30 BisGMA:TEGDMA

Friday, November 9th, 2012
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By popular demand, Esstech now offers a mixture of 70% BisGMA and 30% TEGDMA.  Click on the following links to learn more about our commercial blends:

 

Esstech offers a multitude of monomers including acrylates, methacrylates, diluents, crosslinkers, oligomers and more!  Contact us to discuss sourcing of any material or custom blends to match your application.  With large volume and high shear capability, there is a very good chance that Esstech can create a blend just right for you.

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An Overview of Esstech, Inc.

Tuesday, August 10th, 2010
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Optimizing Degree of Conversion, Strength, Young’s Modulus and Hardness of Bis-EMA, Bis-GMA and TEGDMA Formulations

Tuesday, April 20th, 2010
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Preparation and Evaluation of Dental Resin Luting Agents with Increasing Content of Bisphenol-A Ethoxylated Dimethacrylate

Rafael R. Moraes, Mário A.C. Sinhoreti, Lourenço Correr-Sobrinho, Fabrício A. Ogliari, Evandro Piva, and Cesar L. Petzhold

Journal of Biomaterials Applications, Jan 2010; vol. 24: pp. 453 – 473.

Abstract: Resin luting agents in which bisphenol-A glycidyl dimethacrylate (Bis-GMA) and/or triethylene glycol dimethacrylate (TEGDMA) are replaced with increasing amounts of bisphenol-A ethoxylated dimethacrylate are prepared. Degree of conversion (DC), diametral tensile strength (DTS), Young’s modulus (YM), Knoop hardness (KHN), film thickness (FT), water sorption (Wsp ), and solubility are evaluated. Regression analyses investigate the substitution of each monomer. The most appreciable differences are detected when TEGDMA is replaced: decreased DC, DTS, and Wsp, and increased YM, KHN, and FT. For substitution of Bis-GMA, the only significant differences are reduced Wsp and increased YM. An ideal formulation of resin cement would make use of the three monomers.

…Bis-GMA, TEGDMA, and/or Bis-EMA (Esstech Inc., Essington, PA, USA) were tested…photo-curable, 0.4 wt% of camphor- quinone (Esstech) and 0.8 wt% of N,N-dimethyl-p-toluidine…silanated strontium glass fillers (Esstech), 0.7 and 2 mm in size, to a constant…

This version was published on January 1, 2010.

Link:  http://jba.sagepub.com/cgi/content/abstract/24/5/453


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Refractive Index of Methacrylate Monomers & Polymers

Thursday, March 11th, 2010
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TECHNICAL BULLETIN:  Refractive Index of Monomers and Their Respective Polymers

The refractive index (RI) of photopolymers is an essential property for many applications.  For optical and coating applications, the RI can be related to the resultant gloss or clarity upon cure.  Within the dental industry, the refractive index of the organic polymer matrix, must match that of the inorganic filler and substrate in order to avoid obvious “lines” where the product is applied.

Various factors affect refractive index values.  The presence of conjugated ring structures contributes to increasing RI.  In general, larger molecular weight monomers have a tendency to possess a higher RI in comparison to their lower molecular weight counterparts.  Similar to this trend, high molecular weight functional groups like methacrylates have higher RI than their acrylate counterparts. Higher atomic weight atoms also seem to be predisposed to having higher RI.

Recognizing the importance of refractive index to our customers, Esstech has assembled RI data for a portion of our existing monomer products as well as their corresponding homopolymers.

 Esstech Refractive Index Chart

Maintaining its position as an industry innovator, Esstech has also created functional, high refractive index materials.  Contact us to learn more about these novel materials and how Esstech can make a material to match your application.

 (P) 800-245-3800 / (P) 610-521-3800 / techsupport@esstechinc.com / www.esstechinc.com


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