Q&A About Polyurethanes

Q&A About Polyurethanes: Prepolymers with Low Isocyanate Content

What might cause problems with reproducibility in prepolymers with low isocyanate content?

March 1, 2014

We manufacture prepolymers with an isocyanate content of 15-20% NCO using a variety of diphenylmethane-based isocyanates and polyether polyols.

Q&A About Polyurethanes: September 2013

What approaches can be used to achieve excellent performance at elevated temperatures?

Dr. Jeffrey F. Dormish

September 5, 2013

I am developing an adhesive for an application that requires heat resistance greater than 80°C. A formulation based on a waterborne polyurethane polymer currently provides the best adhesion to the substrate and is a fit for the application process. What approaches can be used to achieve the required level of elevated temperature performance?

Can existing formulations help make the leap from a one-component polyurethane coating to a two-component system?

Dr. Jeffrey F. Dormish

May 1, 2013

I would like to achieve the high performance of a two-component polyurethane coating, but my application process is only able to handle a one-component system. Can any existing formulations help me make this performance leap?

Q&A About Polyurethanes: January 2013

Dr. Jeffrey F. Dormish

January 4, 2013

Certain polymer-based adhesives are described as crystalline, while others are described as amorphous. How do these adhesive polymer types differ? What advantages could be expected from each type?

Q&A About Polyurethanes: September 2012

Dr. Jeffrey F. Dormish

September 4, 2012

Confirming competitive pricing and product availability is a relatively straightforward process, but becoming comfortable with essential technical and performance requirements can be more complicated.

Q&A About Polyurethanes

Dr. Jeffrey F. Dormish

March 19, 2012

Sustainability is a subject that is often raised by potential customers. How should we target new product development or promote existing products to demonstrate that we are addressing their concerns?

Q&A About Polyurethanes

Dr. Jeffrey F. Dormish

July 1, 2011

Q: You've previously discussed polyol recommendations for formulating a two-component polyurethane adhesive. Do you have similar recommendations for the isocyanate component? In many ways, the recommendations for choosing the proper

Q&A About Polyurethanes

Michael Dvorchak Dr. Jeffrey F. Dormish

May 1, 2011

I am developing a two-component reactive adhesive and need some guidance on polyol selection. Can you provide information on the performance expectations of different polyol components? The variety of hydroxyl-containing

Q&A About Polyurethanes

Patrick Stennett

April 1, 2011

A particular application will require me to bond a variety of optically clear polymers to each other and to glass. What adhesive options are available?A particular application will require me

Q&A About Polyurethanes

Jay A. Johnston Ph.D. Steven Reinstadtler

February 1, 2011

A lot of recent discussion has focused on making construction adhesives and sealants green by eliminating formaldehyde, plasticizers or solvents. Are there similar alternatives for the coatings that are often