Essen, Germany - Evonik Industries has created its first polyurethane hot-melt adhesive based on Dynacoll Terra from its Dynacoll product range, the chemical company said in a 24 May statement.
Dynacoll systems were first introduced in the late 1980s. While the modular system of more than 20 medium-molecular options has been adapted and further developed to meet the latest market demands, the addition of polyester made from renewables now introduces "a revolutionary new chapter in the Dynacoll story," the company said.
"We began raw material screening a little over a year ago. The aim was to include the synthesis of amorphous, liquid and crystalline polyesters in the Dynacoll Terra product range," commented Gabriele Brenner, who is in charge of technical service for Reactive Hot Melts at Evonik.
She added, "Not only did we wish to use green components, but we wanted to achieve product properties comparable with, or even better than those offered in the existing product portfolio."
After a period of research, Evonik is now presenting six development products, which is says have a broad spectrum of properties. The individual products contain between 30 and 100 percent monomers derived from renewable resources, and the polyesters can be variously combined in adhesive formulations. Good adhesion properties have already been achieved on a variety of substrates, particularly wood and plastics, the company said in the statement.
The product was developed in close cooperation with one of Jowat AG in Detmold, Germany. At the Ligna trade fair for the wood and furniture industry held in Hanover, Germany, Jowat will present a reactive PU hot melt adhesive for edgebanding on the basis of Dynacoll Terra.
The Ligna trade fair will be held 30 May - 3 June 2011.