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Six sigma quality efforts have measurable impact / Cynthia Challener in COATINGS TECH, Vol. 1, N° 2 (02/2004)  

[article]  inCOATINGS TECH > Vol. 1, N° 2 (02/2004) . - p. 24-27 Titre : Six sigma quality efforts have measurable impact Type de document : texte imprimé Auteurs : Cynthia Challener, Auteur Année de publication : 2004 Article en page(s) : p. 24-27 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Six sigma Index. décimale : 667.9 Revêtements et enduits Résumé : Six Sigma is a business approach developed by Motorola in the late 1980s that involves the identification and elimination of costs that do not have any value associated with them. Initiated byMotoorola's then CEO, Bob Galvin Six Sigma has become a successful methodology for reducing costs, improving performance, and enhancing customer service. Other corporations, including many firms in the paint and coatings market, have since adopted Six Sigma and achieved significant and measurable gains. En ligne : https://drive.google.com/file/d/1Urll90WbRBa6arylPwmgmsbZBMWYnovl/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5555 [article]

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Using six sigma tools to evaluate pigment dispersant demand performance / Mary E. Koban in COATINGS TECH, Vol. 1, N° 2 (02/2004)  

[article]  inCOATINGS TECH > Vol. 1, N° 2 (02/2004) . - p. 28-33 Titre : Using six sigma tools to evaluate pigment dispersant demand performance Type de document : texte imprimé Auteurs : Mary E. Koban, Auteur Année de publication : 2004 Article en page(s) : p. 28-33 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents dispersants (chimie) Analyse des données Dioxyde de titane Pigments Six sigma Index. décimale : 667.9 Revêtements et enduits Résumé : A useful and relatively new methodology for reducing cost and improving quality is Six Sigma. Applying Six Sigma to product design and/or process control has been done on a routine basis. We would like to take this approach into the lab and offer the coatings formulator the same opportunity to explore the benefits of Six Sigma. Therefore, in this work, we focus on evaluating dispersant demand of four pigments using a Six Sigma approach. Specifically, we show how to define which parameters are important to measure, how to perform the measurements, analyze the data, and make conclusions regarding the relative difference in dispersant demand between the test pigments all with a Six Sigma data-driven approach. The goal of this work is to demonstrate how coatings formulators can find benefits in using Six Sigma tools. Then the coatings formulator can expand with confidence the use of Six Sigma to other applicable formulating processes. Note de contenu : - Six Sigma - Identifying key parameters - Measuring important parameters - Data analysis - Fig. 1 : SIPOC process map - Fig. 2 : General dispersion performance SIPOC - Fig. 3 : Cause and effect matrix - Fig. 4 : Generic data collection plan - Table 1 : Dispersion data for four TiO2 pigments En ligne : https://drive.google.com/file/d/1rChzGZlKRgNwVGqJgyq-Z-pOPR-kBaKt/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5556 [article]

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Automotive coatings defects part 1 / Clifford K. Schoff in COATINGS TECH, Vol. 1, N° 2 (02/2004)  

[article]  inCOATINGS TECH > Vol. 1, N° 2 (02/2004) . - p. 34-39 Titre : Automotive coatings defects part 1 : In-plant and field defects Type de document : texte imprimé Auteurs : Clifford K. Schoff, Auteur Année de publication : 2004 Article en page(s) : p. 34-39 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Automobiles -- Revêtements Revêtements -- Défauts:Peinture -- Défauts Index. décimale : 667.9 Revêtements et enduits Résumé : This paper deals with field defects and problems in automotive coatings and how they are caused or affected by weathering. It begins with a brief discussion of defects that occur in the auto factory, such as craters, pops, sags, and foreign material (dirt), some of which can affect durability. Then, it moves on to field defects and problems, a number of which occur as part of the weathering process. Others become worse with weathering. Examples of defects caused by weathering include blistering, water spotting, acid etch, cracking and spalling, delamination, fading and other color changes, and corrosion. Examples of defects that are worsened by weather include mar and scratch, cracking and, sometimes, stone chipping. Each of these defects is discussed. Note de contenu : - DEFECTS IN THE AUTO PLANT - FIELD DEFECTS, CHANGES AND PROBLEMS : Loss of gloss - Blistering - Water spotting, acid etch - Cracking, checking, and spalling - Delamination - Fading, yellowing, and other color changes - Corrosion - Mar and scratch - Stone chipping - Table 1 : Change in softening point with 15-day water soak En ligne : https://drive.google.com/file/d/1N0FxfD_BgT8PyVOVDyloiqkVkluTToVj/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5557 [article]

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High-solids alkyds resins with improved properties based on styrene allyl alcohol (SAA) resinous polyols / Daniel B. Pourreau in COATINGS TECH, Vol. 1, N° 2 (02/2004)  

[article]  inCOATINGS TECH > Vol. 1, N° 2 (02/2004) . - p. 40-47 Titre : High-solids alkyds resins with improved properties based on styrene allyl alcohol (SAA) resinous polyols Type de document : texte imprimé Auteurs : Daniel B. Pourreau, Auteur ; Scott E. Smyth, Auteur Année de publication : 2004 Article en page(s) : p. 40-47 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alcool styrène allylique Haut extrait sec Polyalkydes Polyols Réduction des composés organiques volatils Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Stringent VOC content rules on Architectural and Industrial Maintenance (AIM) coatings have recently been enacted by federal, regional, and state regulatory agencies. These new rules effectively ban the use of low-solids solventborne alkyd resins, despite their excellent properties, ease of use, and low cost. In response to these new regulations, alkyd producers have been developing higher solids and waterborne alkyds, but these new resins do not perform as well and are more costly than the higher VOC versions. High solids alkyd resins typically have lower molecular weights, which can increase their drying times and reduce their durability. Waterborne alkyds are usually more expensive, despite having lower solids contents. Their dry time is also affected by temperature and humidity and their storage stability is usually lower than solution alkyds. These properties make waterborne alkyds less attractive to contractors who require paints with fast dry times and high coverage and hiding power for maximum productivity. This paper describes the use of commercial resinous polyols to produce alkyd resins with lower solvent demand, plus improved dry times, humidity and UV resistance compared to conventional medium- and long-oil alkyds. Partial replacement of pentaerythritol with styrene allyl alcohol (SAA) resinous polyols in standard alkyd resin syntheses results in a marked decrease in the resin polydispersities but little change in the number average molecular weights. Tire SAA polyol can be added to the process as a solid or a liquid, oil-modified polyol. The alkyd resin with the best overall properties was obtained by replacing a portion of the pentaerythritol, soybean oil, and phthalic anhydride with an SAA-modified soy polyol. Note de contenu : - INTRODUCTION : Styrene allyl alcohol copolymers use in alkyds - EXPERIMENTAL : Raw materials - Preparation of SAA oleates - Examples preparation of SAA alkyds - Preparation of pigmented alkyds coatings - RESULTS AND DSICUSSION : Long-oil alkyd resin composition, molecular weight, and polydispersity - SAA oleates - Long-oil alkyd coating properties - Table 1 : National, regional, and state VOC content rules for major architectural and industrial maintenance coating categories - Table 2 : Effect of low-VOC alkyd strategies on coating performance - Table 3 : Properties of commercial styrene allyl alcohol co-polymers - Table 4 : Low-viscosity long-oil alkyds based on SAA polyols - Table 5 : Composition and physical properties of SAA-100 oleates En ligne : https://drive.google.com/file/d/1NY0K6-uuc77TYku-i9lL_S9hFR3Gt_Bd/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5558 [article]

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