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Polyurethane (PU) microspheres & microcapsules

Details

Project TitlePolyurethane (PU) microspheres & microcapsules
Track Codencli-008
Websitehttp://nclinnovations.org/available.php
Short Description


Spherical PU microspheres of uniform shape and size used in getting a film of uniform thickness without any defects or fat edges. Applications in coatings, paints, powder coating/molding. Also, PU microcapsules that can encapsulate any chemical of interest, that could be later released when required.

Abstract


TECHNOLOGY DESCRIPTION

A novel process for preparation of polyurethane microspheres of uniform shape, a narrow particle size distribution, size ranging from 1 to 100 micron and molecular weight ranging from 200-2000. The yield is as high as ~60-85%.

A process for the preparation of polyurethane microcapsules that can encapsulate any chemical of interest, that could be later released when required. For ex.: biocides, pesticides, anti-microbial agents, disinfectants, etc.


MARKET POTENTIAL

• Indian paint industry has been growing at 13% over the last five years & predicted to grow by 15% annually over the next five years*
• Asia Pacific paint market is expected to grow by 7.9% per year, and top demand over 20 million tons by 2014**
• Powder coatings are increasingly being used to meet the needs of new markets/ applications and the worldwide powder coating market in 2010 was $ 2.5 billion^
• The market for anti-microbial coatings in the US has been projected to touch $ 1 billion by the year 2015##

* Coatings World, May, 2008, **http://www.coatingsworld.com/contents/view/24989 ^www.malvern.com/ProcessEng/industries/powder_coatings/overview.html
##www.prweb.com/releases/anti_microbial_coatings/indoor_air_quality/prweb8121153.htm


VALUE/ADVANTAGES

Microspheres
• Produces a film or coating of uniform thickness without defects or fat edges
• Narrow particle size distribution
• Superior appearance (smoothness, uniform coating thickness)

Microcapsules
• Reduce the environmental/mammalian toxicity otherwise caused
• Controlled Release by microcapsules extends the activity of the agent – increases effective delivery, and longer life


APPLICATIONS

Microspheres
• Coatings, paints an powder molding
• Adhesives
• As an encapsulant for pigments, agrochemicals, drugs and reactive chemicals like curing agents

Microcapsules
• Controlled release applications in interior/ exterior paints, coatings for medical devices,- for example, biocides, fungicides or algaecides


TECHNOLOGY STATUS

• Demonstrated at the lab scale
• On the lookout for potential partners for licensing
• Patent applications filed/granted: US 5814675, US 5859075, US 5962003, US 6123988, US 6239213, US 20060251688A1


CONTACT

Case Manager: Magesh N
Phone: +91-20-25902982
Email: m.nandagopal@ncl.res.in

 
Tagspolyurethane, microspheres, microcapsules, uniform thickness, coatings, Controlled Release, encapsulation
 
Posted DateJan 2, 2012 1:02 AM

Files

File Name Description
Microspheres-Flyer None Download