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[article]
Titre : Polyurethanes get a lift : New technology overcames disadvantages associated with non-sagging polyurethane compositions Type de document : texte imprimé Auteurs : Ralf Guether, Auteur ; Peter. H. Markusch, Auteur ; Robert. L. Cline, Auteur Année de publication : 2001 Article en page(s) : p. 31-36 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Colles:Adhésifs
Composés de moulage en feuille
PolyuréthanesIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : Non-sagging behavior is an essential property for polyurethane and adhesive formulations that are applied onto vertical surfaces. Traditionally, the non-sag property is achieved through additives that control theological properties of a paint or adhesive. For warerborne polymers such as latex paints, rheology modifiers include hydroxyerhyl-cellulose, hydrophobically modified alkali-soluble emulsions and hydrophobically modified ethylene oxide urethanes (associative thickeners). Solvent-based polymers, such as alkyd paints, typically use castor oil derivatives, attapulgite or bentonite clays or fumed silica.
Bayer Corp. has developed a non-sagging polyurethane technology that overcomes disadvantages associated with these filled systems. This technology involves the reaction of a liquid polyisocyanate with polyhydroxy compounds and an aliphatic or aromatic amine. The amines may be added to the reaction in an amount sufficient to produce adequate resistance to flow/sag upon mixing of the reactants. Hence, when a bead of polyurethane is applied to a vertical surface, it does not run, drip or sag. Due to the almost immediate reaction of the amine component with the isocyanate, an initial build-up in molecular weight produces the desired non-sagging behavior. The system remains in this "B-stage" for a controllable amount of time before the hydroxy/isocyanate reaction rakes place and the system cures to a solid polyurethane.
This article describes the basic principles of non-sagging polyurethane compositions as well as a wide variety of applications for this technology. Applications for non-sagging polyurethanes include structural adhesives for SMC, expandable caulkings and sealants, furniture edging, carpet seam sealants, and flexible, sandable patching compounds.Note de contenu : - Amine-terminated polyethers
- TDI prepolymer hydrolysis
- Aminocrotonate process
- Mesylate process
- Chloronitrobenzene process
- Structural adhesives for SMC
- Expandable caulkings & Sealants
- Furniture edging
- Seam sealants
- Sandable patching compounds
- Fig. 1 : Polyurea formation
- Fig. 2 : Typical amines
- Fig. 3 : Synthesis of ATPEsEn ligne : https://drive.google.com/file/d/1a2zAvnMyI9PdJCe052wKyaGBXnam7GeM/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19733
in ADHESIVES AGE > Vol. 44, N° 1 (01/2001) . - p. 31-36[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001454 - Périodique Bibliothèque principale Documentaires Disponible Polyurethanes moving with the times / Florian Kessler in KUNSTSTOFFE INTERNATIONAL, Vol. 108, N° 10 (10/2018)
[article]
Titre : Polyurethanes moving with the times : Specialization, resource efficiency, and digitalization are driving developments Type de document : texte imprimé Auteurs : Florian Kessler, Auteur ; Daniel Schneider, Auteur Année de publication : 2018 Article en page(s) : p. 36-40 Langues : Anglais (eng) Catégories : Matériaux -- Allègement
Matières plastiques -- Moulage par injection
Moussage (chimie)
Mousses plastiques
Polymères -- Applications industrielles
Polyuréthanes
Système de changement de couleurIndex. décimale : 668.4 Plastiques, vinyles Résumé : This versatile material is continually opening up new areas of application. A processing technology that achieves high component quality and cost efficiency is the requirement for PU products to be manufactured competitively. Rapid digitalization is playing an increasingly important role here. Note de contenu : - Rapid color changes
- Sealed tight
- Saving resources
- Lightweight structural components with PU
- Polyurethane 4.0
- Thanks to their versatility, polyurethane applications are advancing on all fronts: here is a current example of a polyurethane foam seal made from Fermapor CC with very low moisture absorption and good resistance to ice water, which is a favorably priced alternative to previous closed-cell systems or silicone foams, according to the manufacturer
- Fig. 1 : Colourline multi-connect : this modular machine system can reduce color changing to less than 15 min
- Fig. 2 : Rapid color changing: with the MK10/15-UVP-2K+4 transfer mixing head, up to four colors can be metered without colorant carryover
- Fig. 3 : Carabiner closure: this tool technology for cable foam encapsulation seals off insulat¬ed cable strands so that no foam can escape from the tool
- Fig. 4 : iPul line for the production of fiber-reinforced polyurethane profiles: in this complete
line, fiber impregnation takes place in a closed injection box, which reduces pollution of the work environment and allows higher production speeds
- Fig. 5 : UltraSim: with
foaming simulation, it is possible not only to describe the processing of steer¬ing wheels but also to determine their mechanical behaviorPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31444
in KUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 10 (10/2018) . - p. 36-40[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20275 - Périodique Bibliothèque principale Documentaires Disponible Polyurethanes (PU) / Avar Géza in KUNSTSTOFFE INTERNATIONAL, Vol. 98, N° 10/2008 (10/2008)
[article]
Titre : Polyurethanes (PU) Type de document : texte imprimé Auteurs : Avar Géza, Auteur Année de publication : 2008 Article en page(s) : p. 123-127 Langues : Anglais (eng) Catégories : Matières plastiques -- Industrie et commerce
PolyuréthanesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Growth through diversification - As in previous years, the market for polyurethanes will likely grow by about 5% in 2008. This growth is based to a large extent on a trend towards specialization and diversification associated with innovations in raw materials, PU systems and processes. This has led regularly to new fields of application for this versatile family of
materials.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3572
in KUNSTSTOFFE INTERNATIONAL > Vol. 98, N° 10/2008 (10/2008) . - p. 123-127[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010798 - Périodique Bibliothèque principale Documentaires Disponible Polyurethanes (PU) / Avar Géza in KUNSTSTOFFE INTERNATIONAL, Vol. 101, N° 10 (10/2011)
[article]
Titre : Polyurethanes (PU) Type de document : texte imprimé Auteurs : Avar Géza, Auteur Année de publication : 2011 Article en page(s) : p. 71-76 Langues : Anglais (eng) Catégories : Matières plastiques -- Industrie et commerce
Mousses plastiques
Polyuréthanes
ProductionIndex. décimale : 668.4 Plastiques, vinyles Résumé : Steady Demand - The disproportionately strong economic growth in Asia, and particularly in China, but also new applications resulting from global megatrends such as increasing mobility, climate change, dwindling energy resources, urbanization and the demographic development are driving the world market for polyurethane. In the coming years it is expected to grow at rates of around 5 % per year. This very positive development in the global PU business is currently being countered by sharply rising raw material costs and an increasing pressure on profit margins. Note de contenu : - Investment focus China
- Flexible foam : greater flexibility with PMPO
- Rigid foam : increased demand for building installation
- specialties : new applications driven by global megatrendsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15079
in KUNSTSTOFFE INTERNATIONAL > Vol. 101, N° 10 (10/2011) . - p. 71-76[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13375 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Polyurethanes (PU) : Custom-formulated all-around resin for numerous innovative applications Type de document : texte imprimé Auteurs : Ulrich Liman, Auteur Année de publication : 2014 Article en page(s) : p. 72-78 Langues : Anglais (eng) Catégories : Matières plastiques -- Applications industrielles
Matières plastiques -- Industrie et commerce
Mousses plastiques
PolyuréthanesIndex. décimale : 668.4 Plastiques, vinyles Résumé : The world market for PU grew at an above-average rate in 2013, with total sales reaching 16.4 million t. Prognoses indicate that in the medium term it will continue to grow globally at an annual rate of about 5 %. For years, investments by PU manufacturers have concentrated on the largest PU regional market, the Asian-Pacific region. However, other regions are also displaying solid growth. Note de contenu : - Flexible foams
- Rigid foam
- Integral-skin foams
- PU composites
- Thermoplastic polyurethanesEn ligne : https://drive.google.com/file/d/1F8TABPUuhusfrRxBoIyAVQXmnZriPUYW/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22351
in KUNSTSTOFFE INTERNATIONAL > Vol. 104, N° 10 (10/2014) . - p. 72-78[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16563 - Périodique Bibliothèque principale Documentaires Disponible Positive results in the production of battery cells in ADHESION - ADHESIVES + SEALANTS, Vol. 15, N° 3/2018 (2018)
PermalinkPoursuivre le développement urbain avec des bâtiments durables / Valérie Gramond in L'ACTUALITE CHIMIQUE, N° 416 (03/2017)
PermalinkPermalinkPrecipitated calcium carbonate's particle size, surface treatment affect sealant rheology / Joanne C. Armstead in ADHESIVES AGE, Vol. 40, N° 8 (07/1997)
PermalinkPremium surfaces by the one-shot process / Markus Koppe in KUNSTSTOFFE INTERNATIONAL, Vol. 109, N° 1-2 (01-02/2019)
PermalinkPreparation and application of collagen-based waterborne polyurethane retanning agent / Li Chengtao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 3 (05-06/2017)
PermalinkPreparation and characterization of anticorrosion polyurethane paints and coatings based on novel Zn-free phosphates / Krzysztof Kowalczyk in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 1 (01/2015)
PermalinkPreparation and characterization of cationic waterborne polyurethanes containing a star-branched polydimethylsiloxane / Xiaoling He in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)
PermalinkPreparation and characterization of hydrogen-containing silicone oil-modified polyurethane/Al composite coating with low-infrared emissivity / Weigang Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
PermalinkPreparation and characterization of polyurethane clearcoats and investigation into their antigraffiti property / Hu Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 6 (11/2013)
PermalinkPreparation and characterization of polyurethane/polysulfide miscible blend nanocomposites / P. K. Guchhait in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 4 (08/2012)
PermalinkPreparation and characterization of water-based polyurethane–acrylic hybrid nanocomposite emulsion based on a new silane-containing acrylic macromonomer / Hamid Javaheriannaghash in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 3 (05/2012)
PermalinkPreparation and characterization of waterborne polyurethane nail enamel modified by silane coupling agent in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
PermalinkPreparation and characterization of waterborne polyurethane/polyacrylate emulsions containing sulfonate groups / Xiaorong Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 6 (11/2018)
PermalinkPreparation and evaluation of degradable polyurethane with low surface energy for marine antifouling coating / Yue Xu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)
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