Results 241 to 250 of about 134,814 (297)

Monocomponent Non-isocyanate Polyurethane Adhesives Based on a Sol–Gel Process

, 2020
Non-isocyanate polyurethanes (NIPUs) based on five-membered cyclic carbonates have emerged as the most promising alternative to replace more toxic, conventional polyurethanes.
Alvaro Gomez-Lopez, B. Grignard, Iñigo Calvo, C. Detrembleur, H. Sardón   +4 more
semanticscholar   +1 more source

WORKERS' EXPOSURE TO ISOCYANATES

American Industrial Hygiene Association Journal, 1992
A model of exposure to isocyanates, based on knowledge of industrial processes and starting materials and the results of industrial hygiene surveys, is proposed. This model of exposure suggests the concentration and physical form of airborne isocyanate monomers and oligomers.
J, Lesage, N, Goyer, F, Desjardins, J Y, Vincent, G, Perrault   +4 more
openaire   +2 more sources

Preparation of isocyanate microcapsules as a high-performance adhesive for PLA/WF

Construction and Building Materials, 2020
The application of liquid isocyanate in composite material is limited because of its high activity and toxicity. In this work, microcapsules were employed to preserve the activity of isocyanates.
Yangbao Ma, Shanshan Lv, X. Yao, Yanhua Zhang, J. Gu   +4 more
semanticscholar   +1 more source

Biomarkers for Isocyanate Exposure:  Synthesis of Isocyanate DNA Adducts

Chemical Research in Toxicology, 2006
Isocyanates are important intermediates in industrial manufacturing. DNA adducts and protein adducts are important tools to biomonitor people exposed to xenobiotics. In the present work, the formation of DNA adducts deriving from 4-chlorophenyl isocyanate (4CPI) and 4-methylphenyl isocyanate (4MPI) were explored. The adducts of 4CPI and/or 4MPI with 2'-
Beyerbach, A, Sabbioni, G, Farmer, PB
openaire   +3 more sources

Sulfonylmethyl isocyanates, a new class of isocyanates

Recueil des Travaux Chimiques des Pays-Bas, 1966
AbstractFive alkyl‐ and aryl‐sulfonylmethyl isocyanates have been ...
J. Strating, H. O. van Oven, A. M. van Leusen   +2 more
openaire   +1 more source

Polyfunctional Acrylic Non-isocyanate Hydroxyurethanes as Photocurable Thermosets for 3D Printing

Macromolecules, 2019
Liquid acrylic oligourethanes are components of photocurable thermoset resins for applications ranging from coatings to 3D printing technologies like stereolithography.
Vitalij Schimpf, A. Asmacher, A. Fuchs, B. Bruchmann, R. Mülhaupt   +4 more
semanticscholar   +1 more source

A comparison of non-isocyanate and HDI-based poly(ether urethane): Structure and properties

Polymer, 2019
DMC-derived poly (ether urethanes) were prepared via isocyanate-free route. The transurethanization reaction of the non-isocyanate route needs higher temperature as compared with the traditional route.
Ziyun Shen, Liuchun Zheng, Chuncheng Li, Guoming Liu, Yaonan Xiao, Shaohua Wu, Jiajian Liu, Bo Zhang   +7 more
semanticscholar   +1 more source

Chemical recycling of a lignin-based non-isocyanate polyurethane foam

Nature Sustainability, 2023
James Sternberg, Srikanth Pilla
semanticscholar   +1 more source

Synthesis of self-healable waterborne isocyanate-free poly(hydroxyurethane)-based supramolecular networks by ionic interactions

Polymer Chemistry, 2019
A novel synthetic strategy to isocyanate-free supramolecular polyhydroxyurethanes based on ionic interactions is described.
Amaury Bossion, Ion Olazabal, R. Aguirresarobe, Sara Marina, Jaime Martín, L. Irusta, D. Taton, H. Sardón   +7 more
semanticscholar   +1 more source

Preparation of isocyanate microcapsules as functional crosslinking agent by minimalist interfacial polymerization

Advanced Powder Technology, 2019
Isocyanate is an extremely high activity compound that has been extensively used in the chemical materials. In this study, we employ microcapsules in preserving the activity of isocyanates and controlling their release in wood adhesives for plywood ...
Yangbao Ma, P. Lu, Wenshuai Chen, Yanhua Zhang, J. Gu   +4 more
semanticscholar   +1 more source