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ADHESIVES & SEALANTS INDUSTRY (ASI) . Vol. 25, N° 4Formulating adhesive and sealantsMention de date : 04/2018 Paru le : 16/05/2018 |
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Ajouter le résultat dans votre panierIntroduction to farnesene-based polyols / Herbert Chao in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 4 (04/2018)
[article]
Titre : Introduction to farnesene-based polyols Type de document : texte imprimé Auteurs : Herbert Chao, Auteur ; Steve Henning, Auteur ; Nan Tian, Auteur ; Tomas Tmka, Auteur Année de publication : 2018 Article en page(s) : p. 21-27 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Hydrophobie
Polyaddition
Polyfarnesène
Polymères -- Synthèse
Polyols
Polyuréthanes
RhéologieIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : A new hydrophobic polyol derived from a renewable source offers lower viscosity than hydroxyl-terminated polybutadienes (HTPBs) of the same molecular weight.
Hydroxyl-terminated polybutadiene (HTPB) resins are known to have a higher viscosity than polyether polyols of the same molecular weight. A new hydrophobic polyol derived from renewable resources, namely polyfarnesene diol, has been developed having lower viscosity than the HTPBs of the same molecular weight.Hydroxyl-terminated polybutadiene (HTPB) resins are known to have a higher viscosity than polyether polyols of the same molecular weight. A new hydrophobic polyol derived from renewable resources, namely polyfarnesene diol, has been developed having lower viscosity than the HTPBs of the same molecular weight.
Trans-b-farnesene* was used in the present study for the anionic processes (farnesol and other oxygenated byproducts removed). Trans-b-farnesene is produced in small quantities in natural processes, but typically both a- and b-isomers are present. The supplier has modified the common yeast Saccharomyces cerevisiae to efficiently produce large amounts of trans-b- farnesene. Sugar is fermented to the target molecule in a manufacturing-ready strain that used 21 enzymatic steps in a native pathway. Only the b-isomer is active in polymerization, making this fermentation route especially attractive industrially.
This article summarizes the preparation of polyols based on trans-b-farnesene via anionic polymerization. Polyurethanes derived from polyfarnesene diol (PFD), poly(farnesene-co-butadiene) diol, and polyol blends of polyfarnesene diol and hydroxyl-terminated polybutadiene are evaluated and compared.Note de contenu : - ANIONIC POLYMERIZATION
- POLYURETHANE SYNTHESIS
- RESULTS AND DISCUSSION : Miscibility of polyfarnesene diols with other polyols - Polyurethanes derived from polyol mixture containing diols - POlyurethanes derived from copolymer diols based on different ratios of farnesene and butaniene - Polyurethane derivef rom th epolyol mixture conatining polyfarnesene diol and poly bd polyol - Viscosity of polyol blends and copolymer polyols
- FIGURE : Viscosity of polyol blends and polyols of copolymers made from farnesene and butadiene in various ratios
- TABLES : 1. Compatibility results of polyfarnesene diol and hydrogenated polyfarnesene diol - 2. Polyurethanes of 30% hard segment content derived from polyol blends of PFD 2000 and Krasol LBH 2000 resin - 3. Polyurethanes of 40% hard segment content derived from polyol blends of PFD 2000 and Krasol LBH 2000 resin - 4. Polyurethanes of 30 % hard segment content derived from polyols based on farnesene and butadiene random copolymers - 5. Polyurethanes of 40 % hard segment content derived from polyolss based on farnesene and butadiene random copolymers - 6. Polyurethanes of 30 % hard segment content derived from polol blends of PFD 2000 and poly bd R45HTLO resin - 7. Polyurethanes of 40 % hard segment content derived from poloyl blends of PFD 2000 and poly bd R45HTLO resin - 8. Polyurethanes of 30 % hard segment content derived from poloyl blends of PFD 2000 and poly bd R20LM resin - Polyurethanes of 40 % hard segment content derived from poloyl blends of PFD 2000 and poly bd R20LM resin
- TABLES :En ligne : https://www.adhesivesmag.com/articles/96166-introduction-to-farnesene-based-poly [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30632
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 25, N° 4 (04/2018) . - p. 21-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19885 - Périodique Bibliothèque principale Documentaires Disponible Dispensing systems for dosing two-component silicones in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 4 (04/2018)
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Titre : Dispensing systems for dosing two-component silicones Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 35-37 Langues : Américain (ame) Catégories : Adhésifs -- Application-dosage
Colles bi-composante:Adhésifs bi-composant
Pompes à piston
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
Systèmes de dosageIndex. décimale : 668.3 Adhésifs et produits semblables Note de contenu : - Applied pumping systems
- Optimal implementationEn ligne : https://www.adhesivesmag.com/articles/96162-dispensing-systems-for-dosing-two-co [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30633
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Code-barres Cote Support Localisation Section Disponibilité 19885 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Convertin success Titre original : Converters should partner with adhesive manufacturers that are committed to designing PSAs with properties that benefit the converting process Type de document : texte imprimé Auteurs : Kathy Magyar, Auteur Année de publication : 2018 Article en page(s) : p .38-41 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs sensibles à la pression
Adhésifs thermofusibles
Emballages souples
EtiquettesIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : For nearly 100 years, pressure-sensitive adhesives (PSAs) have been used in converting applications. According to the Adhesive and Sealant Council Inc.,2 one of the first converting applications to feature PSAs was Johnson & Johnson’s cloth Band-Aid® products in the 1920s. In the 1960s, PSAs began replacing cold glues for the labeling of plastic bottles. Today, PSAs are converted for thousands of applications in a variety of industries―from medical to industrial and beyond.
One of the most common industries to convert PSAs is labels and labeling. PSA label converting may consist of printing, over-laminating, die-cutting, matrix removal, web splicing and slitting. Die-cutting and matrix removal are generally the most commonly known label-finishing functions. Die-cutting is the process of using steel or magnetic tools to cut the finished shape of the label. The material that is left following a die-cut is called the matrix. Matrix removal is the process of stripping the excess matrix so only the cut labels remain on the silicone liner.Note de contenu : - CONVERTER-FREINDLY PSA LABEL TYPES : Acrylic emulsion - Hot melts
- Ensuring converting success
- A winning combinationEn ligne : https://www.adhesivesmag.com/articles/96161-successful-converting-with-pressure- [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30634
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Code-barres Cote Support Localisation Section Disponibilité 19885 - Périodique Bibliothèque principale Documentaires Disponible