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  • Akshay Kokil
  • Yongwoo Lee

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Details

Project TitleHighly Stable and Environment-friendly Vinyl Resins
Track Code2015-041
Short Description

Environmentally benign methodology for the synthesis of a new class of resin, vinyl hydroxyl ether resin (VHER).

Abstract

An environmentally benign methodology for the synthesis of a new class of resin, vinyl hydroxyl ether resin (VHER). This approach eliminates the chemically and thermally unstable ester linkages in the resin and eliminates the use of hazardous chemicals epichlorohydrin and styrene.

 
Tagsresin, vinyl ether, green chemistry
 
Posted DateJun 7, 2017 5:14 PM

Researcher

Name
Akshay Kokil
Yongwoo Lee

Manager

Name
Vijayendra Kumar
Rajnish Kaushik

Background

Vinyl ester resins (VER) are high performance unsaturated resins with exceptional mechanical strength and corrosion resistance. In addition to their superior performance, these resins display lower viscosities than conventional epoxy resins resulting in significantly improved processability. Current process of making VER involves toxic chemicals such as epichlorohydrin and styrene. Epichlorohydrin has been identified by the U.S. Environmental Protection Agency (EPA) as a hazardous air pollutant and it also features on the list of controlled chemicals by the EPA.

Although, VER is widely utilized, it contains ester linkages which are susceptible to chemical and thermal degradation. The hydroxyl group present in the VER however, is vital for its interaction with a variety of substrates and fiber reinforcements.

Hence, a resin structure containing the hydroxyl group, no ester linkages and avoid the use of toxic chemicals such as epichlorohydrin and styrene would result in significantly more stable class of resin.

Technology

UMass Lowell researchers Dr Yongwoo Lee and Dr. Akshay Kokil have developed an environmentally benign methodology for the synthesis of a new class of resin, vinyl hydroxyl ether resin (VHER). Process of making VHER resin consists of single step synthetic protocol. This approach retains the hydroxyl group and eliminates the chemically and thermally unstable ester linkages in the resin and eliminates the use of hazardous chemicals epichlorohydrin and styrene.

Competitive Advantages

  • Environment-friendly “Green” process
  • Synthetic steps involve no use of hazardous chemicals, Epichlorohydrin-free process
  • Elimination of ester moieties promises stability towards chemical and thermal degradation of the resin
  • One pot/single step process
  • Cost-comparative

Applications

Vinyl hydroxyl ether resins (VHER) find use similar to VER, either in pure form or as a matrix in fiber-reinforced composites, in diverse industries such as Transportation, Building & Construction, Marine.

  • Automotive parts
  • Corrosion resistance coatings - chemical storage tanks, pipes& ducting, fume extraction systems, gas cleaning units
  • Ship building
  • Top-coat materials (with excellent adhesion to plastics, steel and concrete)
  • Optical fiber coating
  • UV curing inks
  • Printed circuit board manufacture

Market Potential

Vinyl ester resins were first commercialized as Epocryl resins by Shell Chemical Company and later as Derakane resins by Dow Chemical Company. Currently these resins are produced predominantly by Ashland, DSM and Reichold.

The global reinforced plastic composite market is estimated to total 13.6 billion pounds in 2013, 14.3 billion pounds in 2014 and is expected to increase to nearly 17.2 billion pounds (~$92B) by 2019. This market is expected to show a compound annual growth rate (CAGR) of 3.7% through the forecast period of 2014 to 2019.

About the inventor

Dr Yongwoo Lee, Research Professor in Chemistry, has expertise in bioinspired materials, bio-based adhesives and coatings, flexible polymeric transistors, greener resins derived from renewable materials. For detail, see an inventor profile.

Dr. Akshay Kokil, Post-Doctoral Research Associate at UMass Lowell has research experience in design, synthesis, characterization and processing of advanced materials. For detail, see an inventor profile.  

Patent

Pending, World-wide protection available 

Publications

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