Nitto Europe N.V. | Date: 2013-06-13
The present invention is concerned with a honeycomb based high temperature structural damper laminate, based on a core structure comprising a honeycomb laminated with a layer of a structural damping material. The present invention also provides a method for producing said laminate as well as the use of said laminate in various fields of application.
Vendamme R.,Nitto Europe NV |
Schuwer N.,Ecole Polytechnique Federale de Lausanne |
Eevers W.,Vlaamse Instelling voor Technologisch Onderzoek VITO NV
Journal of Applied Polymer Science | Year: 2014
In this review, we provide a bird's eye view of recent developments in the field of pressure-sensitive adhesives (PSAs) derived from renewable monomeric building blocks. This emerging research field has been driven by increasing sustainability requirements in the adhesive industry and bridges the gap existing between highly optimized petroleum-based synthetic PSA systems, which display superior performance but lack biobased content, and historical PSAs derived from naturally occurring biopolymers (e.g., starch and natural rubber), which provide more environmentally friendly bonding solutions but have inherent technical limitations that prevent their more widespread implementation in today's technically demanding applications. We critically reviewed a representative (and exhaustive) survey of recent synthetic approaches to the development of biobased PSAs from the academic (articles) and industrial (patents) literature categorized in two families: chain-growth and step-growth polymerization routes. Finally, we draw a parallel between renewable synthetic PSAs and nature's self-adhesive glues, highlighting how the synergy between green chemistry and biomimetic concepts could inspire the emergence of a new generation of smart, synthetic, biobased PSAs with differentiated properties that approach the ones that are found in the natural world and with a wide spectrum of potential applications in the industrial and medical sectors. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40669. Copyright © 2014 Wiley Periodicals, Inc. Source
Vendamme R.,Nitto Europe NV |
Eevers W.,Nitto Europe NV |
Eevers W.,Nitto Denko Europe Technical Center Sarl
Macromolecules | Year: 2013
This article describes the synthesis of functional pressure-sensitive adhesives (PSA) derived from plant oils and highlights how the viscoelastic and adhesion properties can be tailored by incorporation of the cereal-based monomer 1,4:3,6-dianhydro-d-glucitol (isosorbide). At first, the synthesis of carboxylic acid-terminated polyesters from bulk polycondensation of dimerized fatty acids with several diols such as dimer fatty diol, butanediol or isosorbide is described. The resulting polymers were then fully characterized, before being cured with epoxidized plant oils to form viscoelastic bioelastomers with tunable stickiness degrees. The role of isosorbide in the rheological and adhesion profiles of the glues was investigated and discussed. These renewable coatings combined the intrinsic flexibility of lipids with the polarity of sugars and demonstrate interesting performances. This article exemplifies that in soft materials such as PSA, isosorbide can play multiple roles such as adjusting the glass transition temperature, modulating the viscoelastic spectrum, and tuning the interfacial properties of the glue, and this gives a new twist to this promising renewable monomer that, up to now, has mostly been incorporated in rigid polymeric systems. © 2013 American Chemical Society. Source
Nitto Denko Corporation and Nitto Europe N.V. | Date: 2010-06-02
The present invention is directed to a bio-based composition comprising a polycondensate of a dimer of a fatty alcohol and a dimer of a fatty acid, and an epoxidized fatty acid ester as a cross-linking agent, wherein the polycondensate and the epoxidized fatty acid ester are capable of reacting with each other. The invention is also directed to an adhesive obtainable by reacting the polycondensate and the epoxidized fatty acid ester, to a method for preparing the adhesive and to the use of the adhesive for laminating a sheet or a film
Nitto Europe N.V. and Nitto Denko Corporation | Date: 2015-10-20
The present invention provides pressure-sensitive adhesive films with a favourable visual appearance and surface printability without discoloration and burrs on the cutting edge after short-wavelength laser machining. At the same time, the PSA films of the present invention exhibit a favourable cuttability, allowing for high fiber laser as well as carbon dioxide laser cutting speeds. Since the use of the PSA films of the present invention as surface protecting films does not require extensive cleaning and polishing operations after the cutting process and the cutting process itself may be accelerated, the efficiency of laser machining methods may be improved.