New PU dispersion combines environmental advantages with superior physical properties

13-Apr-09
Bayer MaterialScience recently unveiled the new DISPERCOLL® U XP 2699 polyurethane dispersion which it says combine the environmental advantages of a water-based sealant with the superior physical properties of a polyurethane resin in a new, high-performance water-based sealant. Dr. Jay A. Johnston, senior associate scientist, Bayer MaterialScience LLC, presented his research at Adhesives & Sealants Council Spring Meeting 2009 on April 7, 2009. As opposed to low-VOC water-based sealants prepared form acrylic resins, a sealant formulated with the DISPERCOLL® U XP 2699 dispersion demonstrates physical properties similar to a reactive sealant, despite being water-based, according to Johnston's work. And, his research also shows that adjusting the filler, plasticizer and resin ratios enables further fine tuning of the physical properties of the final sealant. According to Johnston, low-VOC water-based sealants prepared from acrylic resins have long been available in the commercial market. Though being water-based and environment friendly, these sealants usually have less desirable physical properties when compared with sealants formulated with reactive chemistries. These less desirable properties include lower tensile strength, lower tear resistance, less elasticity, poorer environmental resistance, and a tendency to shrink during cure.
  More News  Post Your Comment

Previous News

Next News

{{comment.Name}} made a post.
{{comment.DateTimeStampDisplay}}

{{comment.Comments}}

COMMENTS

0

There are no comments to display. Be the first one to comment!

*

Name Required.

*

Email Id Required.

Email Id Not Valid.

*

Mobile Required.

Email ID and Mobile Number are kept private and will not be shown publicly.
*

Message Required.

Click to Change image  Refresh Captcha