Posts Tagged ‘Monomer’

PL Industries to Attend 2014 UV & EB Technology Expo and Conference

Wednesday, April 16th, 2014
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We are excited to announce that representatives from PL Industries, a division of Esstech, Inc., will be attending the 2014 UV & EB Technology Expo and Conference, May 12th through the 14th, at the Hyatt Regency O’Hare in Rosemont, Illinois.

Our own Dr. Mike Idacavage will be teaching a short course on the fundamentals of polymer chemistry for professionals in the UV/EB technical field. The course will include an in-depth discussion on the chemistry of the photoinitiation process and will highlight a variety of polymer characterization techniques for UV/EB polymers. Click here for more information!

 

Please contact sales@esstechinc.com to set up an appointment to discuss custom solutions for:

  • Industrial Coatings
  • Ink Jet
  • Graphic Arts
  • Cosmetics
  • 3D Printing
  • Electronics

We look forward to seeing you at RadTech 2014!

 

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LOW SHRINK, HIGH CONVERSION

Friday, November 11th, 2011
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EXOTHANE Elastomers

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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PRODUCT SPOTLIGHT: HEMA Maleate

Friday, November 11th, 2011
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Item Code: X-846-0000X-846-0000, HEMA Maleate

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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Introducing EXOTHANE Elastomers

Wednesday, September 28th, 2011
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EXOTHANE Elastomers

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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Esstech Attending UV.EB East

Wednesday, September 21st, 2011
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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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Properties of UDMA and Bis-GMA based Composites

Monday, February 28th, 2011
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Hydrogen bonding interactions in methacrylate monomers and polymers

Marianela T. Lemon, Melissa S. Jones, Jeffrey W. Stansbury
Department of Craniofacial Biology, University of Colorado School of Dentistry, Aurora, Colorado 80045

ABSTRACT

It is well appreciated that hydrogen bonding affects a variety of monomer and polymer properties. This study focused on Bis-GMA and urethane dimethacrylate (UDMA) to help elucidate how the strength and nature of
specific noncovalent interactions involved with these different functional dimethacrylate structures are expressed in the monomers and polymers. Hydrogen bonding interactions in monomers and comonomer mixtures as well as in appropriate model compounds were examined by FT-IR under ambient conditions, at elevated temperatures and in dilution studies. The investigation of hydrogen bonding extended to monomer viscosity, photopolymerization reaction kinetics, and polymer mechanical properties.

CONCLUSION

The strength of hydrogen bonding was shown not only to be greater for Bis-GMA compared with UDMA, but there is also greater contribution from intermolecular interactions that enhance the hydrogen bonding effects. While UDMA-based polymers reach significantly higher levels of conversion compared with Bis-GMA materials, the stronger hydrogen bonding reinforcement associated with Bis-GMA appears to provide for comparable mechanical strength properties. Depending on the hydrogen bond donor functionality of a monomer as well as its neighboring functional groups, overall monomer structure and comonomers used, hydrogen bonding can favorably affect polymerization reactivity and mechanical properties, even in materials that form highly crosslinked polymeric networks.


Wiley Periodicals, Inc. J Biomed Mater Res 83A: 734–746,2007

Link:  http://onlinelibrary.wiley.com/doi/10.1002/jbm.a.31448/abstract



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An Overview of Esstech, Inc.

Tuesday, August 10th, 2010
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Esstech to Present at IADR 2010

Wednesday, April 28th, 2010
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We are very excited to announce the details of our 2010 IADR presentation!

Physical Properties of New Low-Shrink Resin

Friday, July 16, 2010: 3 p.m. – 4:15 p.m.
Location: Exhibit Hall (CCIB)
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 Ctr at San Antonio, San Antonio, TX

2010 IADR Meeting Logo


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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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