Dimension Technology Chemical Systems

 

We at DTCS are dedicated to answering any technical questions you might have about our Catalysts or Department of Defense technologies.

Dimension Technology Chemical Systems, Inc. (DTCS), is a global supplier of company proprietary catalysts that are specificity designed to give maximum curing performance of epoxy formulations and facilitate the formation of epoxy-derivatives (monomer or intermediates) for a number of commercial applications.

Dimension Technology Chemical Systems, Inc. (DTCS), is also a leader in chemical process research and development especially suited for Department of Defense (DOD) requirements and supplies the DOD with products particularly valuable for the security of our country.

Below are links to our products as well as technical data. For questions or comments,  please contact our Sales DepartmentGeneral Manager, or Research Director. To stay current with DTCS Products, Services, and Technical publications,  subscribe to our newsletter.

Our Director of Research and Development, Renato Rindone, writes a periodic short blog about his thoughts and ideas concerning the application of Hycat™ catalysts as well as other subjects pertaining to the field of polymers.

Hycat™ Catalysts Products

Department of Defense Products

Carboxylates

Hycat™ OA

 

Nitroplasticizer (A/F)

 

Hycat™2000S

 

Bis(2,2-dinitropropyl)Acetal [BDNPA]

 

Hycat™ 3000S

 

Bis(2,2-dinitropropyl)Formal [BDNPF]

Organophosphorus

Hycat™ AO-4

 

Tetrazine Derivitives

Emerging Catalysts

Hycat™ ZEP

 


 

                                                                                                                                                     

 

Research Director's Blog

 If you are interested in the subject presented, please share your comments or tell us what you would like to see on an upcoming blog.

 
Uniform Cross Linking of Aziridine Polymers with Dimer Acids | Print |
Written by Renato Rindone   
Monday, 28 September 2009 12:10

 

Uniform Cross Linking of Aziridine Polymers with Dimer Acids feed-icon

Polyaziridines, such as Xama-2 and Xama-7 are used in a number of applications such as:

Adhesives

Varnishes

Protective Films

Pressure Sensitive Adhesives

Wood Coatings

Photograph Films

Printing Inks

Leather and Textile Coatings

Plastic Films

 

  Cross linking of an aziridine with a poly functional carboxylic acid (or carboxylic acid anhydride) can be the desired end product.  

aziridine cross with poly functional carboxylic acid

 

Use of Hycat™ catalysts eliminates the problem of homopolymerization as shown in the reaction of pentaerythritol-tris-3-(1-aziridinyl)-propionate (Xama-7) with a dimer acid.  

Into a mixing cup were weighed 15.5 grams (100.3 meq) of Xama-7, 27.7 grams (101.6 meq) of Empol 1016 dimer acid and 4.28 grams of Hycat™ 2000/2000S. The mixture was mixed for two minutes with a spatula, and then placed into a Garner wire-stirred gel timer (Model GT-S) at 32 OC. After one minute of stirring the contents of the cup were completely solidified into a uniform, hard rubbery mass. Considerable heat was liberated during this period. As a control, the reaction was also performed without the use of the Hycat™ catalyst. Into an aluminum pan (60 mm diameter) were weighed1.6 grams (10.36 meq) of Xama-7 and 2.7 grams (9.90 meq) of Empol 1016 dimer acid and mixed for 2 minutes with a spatula then allowed to stand at 32 OC overnight. After 15 minutes the composition was tacky which solidified into a semi-tacky mass on standing overnight.

 

  ATTEMPTED HOMOPOLYMERIZATION OF XAMA-7 WITH HYCAT™ CATALYST

To show that Xama-7 does not homopolymerized in the presence of Hycat™ catalysts even at elevated temperature, 6.8 grams of Xama-7 and 0.4 grams of Hycat™ 2000/2000S were placed into an aluminum pan, thoroughly mixed with a spatula then heated to 41 OC for 3.25 hours. The contents of the pan were still quite fluid. After 9 days storage at about 20 OC the contents of the pan remained fluid.

Last Updated on Tuesday, 06 October 2009 12:43
 
 
 

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