Polyoxymethylene from Methanol and Acetic Anhydride - Cost Analysis - POM E21A


Book Description

This report presents a cost analysis of Polyacetal Resins (also known as Polyoxymethylene, POM) production starting from methanol and acetic anhydride. The process examined is a conventional silver-catalyzed process with methanol recycle, combined with one owned by DuPont for producing the POM. In this process, methanol is converted to Formaldehyde (37wt% solution) over a silver catalyst. The formaldehyde (37wt% solution) is concentrated to a purity higher than 99.9wt% by means of two distillation steps and a treatment step. High purity formaldehyde is then polymerized in an inert cyclohexane medium. This report was developed based essentially on the following reference(s): (1) "Formaldehyde", Kirk-Othmer Encyclopedia of Chemical Technology, 5th edition (2) "Acetal Resins", Kirk-Othmer Encyclopedia of Chemical Technology, 5th edition (3) US Patent 2768994, issued to Du Pont in 1956 Keywords: Acetyl resin, polyoxymethylene (POM) resins, polymer of formaldehyde, DuPont, polyformaldehyde, Formalin, silver catalyst, Uhde Inventa Fischer, EMS, formaldehyde solution, incomplete conversion




Polyoxymethylene from Methanol and Acetic Anhydride - Cost Analysis - POM E21A


Book Description

This report presents a cost analysis of Polyacetal Resins (also known as Polyoxymethylene, POM) production starting from methanol and acetic anhydride The process examined is a conventional silver-catalyzed process with methanol recycle, combined with one owned by DuPont for producing the POM. In this process, methanol is converted to Formaldehyde (37wt% solution) over a silver catalyst. The formaldehyde (37wt% solution) is concentrated to a purity higher than 99.9wt% by means of two distillation steps and a treatment step. High purity formaldehyde is then polymerized in an inert cyclohexane medium. This report was developed based essentially on the following reference(s): (1) "Formaldehyde", Kirk-Othmer Encyclopedia of Chemical Technology, 5th edition (2) "Acetal Resins", Kirk-Othmer Encyclopedia of Chemical Technology, 5th edition (3) US Patent 2768994, issued to Du Pont in 1956 Keywords: Acetyl resin, polyoxymethylene (POM) resins, polymer of formaldehyde, DuPont, polyformaldehyde, Formalin, silver catalyst, Uhde Inventa Fischer, EMS, formaldehyde solution, incomplete conversion




Polypropylene Homopolymer via Gas Process - Cost Analysis - PP E14A


Book Description

This report presents a cost analysis of Polypropylene (PP) homopolymer production from polymer grade (PG) propylene using a gas phase process. The process examined is similar to Grace UNIPOL process. This process is based on the polymerization of gaseous PG propylene in fluidized-bed reactors. This report was developed based essentially on the following reference(s): US Patent 6005049, originally issued to Union Carbide in 1999 (assigned to Grace in 2014) Keywords: PG Propylene, Propene, Dow, Gas-Phase Reactor, Fluidized Bed Reactor




Designing with Plastics and Composites: A Handbook


Book Description

For some time there has been a strong need in the plastic and related industries for a detailed, practical book on designing with plastics and composites (reinforced plastics). This one-source book meets this criterion by clearly explaining all aspects of designing with plastics, as can be seen from the Table of Contents and Index. It provides information on what is ahead as well as today's technology. It explains how to interrelate the process of meeting design performance requirements with that of selecting the proper plastic and manufacturing process to make a product at the lowest cost. This book has been prepared with an awareness that its usefulness will depend greatly upon its simplicity. The overall guiding premise has therefore been to provide all essential information. Each chapter is organized to best present a methodology for designing with plastics and composites. of industrial designers, whether in engineering This book will prove useful to all types or involved in products, molds, dies or equipment, and to people in new-product ventures, research and development, marketing, purchasing, and management who are involved with such different products as appliances, the building industry, autos, boats, electronics, furniture, medical, recreation, space vehicles, and others. In this handbook the basic essentials of the properties and processing behaviors of plastics are presented in a single source intended to be one the user will want to keep within easy reach.




Polylactic Acid


Book Description

Polylactic Acid: A Practical Guide for the Processing, Manufacturing, and Applications of PLA, Second Edition, provides a practical guide for engineers and scientists working in PLA and on the development of emerging new products. The current market situation for PLA and biodegradable polymers is described, along with applications across a range of market sectors. In addition, the mechanical, chemical, thermal, rheology and degradation properties are included. Updates include new chapters covering various processing methods, as well as recycling methods, and additives and processing aids. New applications cover a range of products (including 3D Printing), and an environmental assessment, including regulatory aspects. The book is not only a useful introduction to this topic, but also a practical, readily applicable reference book that will support decision-making in the plastics industry. - Presents an essential reference for engineers, scientists and product designers considering switching to a sustainable plastic - Covers the properties, synthesis and polymerization of PLA, along with processing techniques involved in fabricating parts from this polymer - Includes critical new chapters on processing, additives, recycling and environmental considerations relating to PLA




Handbook of Textile Fibre Structure


Book Description

Due to their complexity and diversity, understanding the structure of textile fibres is of key importance. This authoritative two-volume collection provides a comprehensive review of the structure of an extensive range of textile fibres.Volume 2 begins by reviewing natural fibres such as cellulosic, cotton, protein, wool and silk fibres. Part two considers regenerated cellulosic, protein, alginate, chitin and chitosan fibres. The final part of the book discusses inorganic fibres such as glass, carbon and ceramic fibres as well as specialist fibres such as thermally and chemically-resistant fibres, optical and hollow fibres. Chapters review how fibre structure contributes to key mechanical properties. A companion volume reviews the structure of manufactured polymer fibres.Edited by leading authorities on the subject and with a team of international authors, the two volumes of the Handbook of textile fibre structure is an essential reference for textile technologists, fibre scientists, textile engineers and those in academia. - Discusses how fibre structure contributes to key mechanical properties - Reviews natural fibres such as cellulosic, cotton and silk fibres and considers various regenerated fibres - Examines inorganic fibres including glass and carbon as well as specialist fibres such as chemically-resistant and optical fibres




Handbook of Textile Fibres


Book Description

A comprehensive survey of the natural fibres animal, vegetable and mineral on which we depended for our textiles until comparatively recently.




Fibre Structure


Book Description

Fibre Structure is a 19-chapter text that emerged from lectures presented at the Manchester College of Science and Technology. The interest of fiber studies lies to some extent in the important part textile materials play in general living and in industrial products and operations. The first chapters deal with the chemistry of fiber-forming polymers, followed by considerable chapters on the controversial subject of the fine structure of fibers. The remaining chapters describe the special features of all the important fibers, including glass and asbestos. Textile scientists, researchers, and manufacturers will find this book invaluable.




Polyoxymethylene Production Process - Cost Analysis - POM E11A


Book Description

This report presents a cost analysis of Polyacetal Resins (also known as Polyoxymethylene, POM) production from acetic anhydride and formaldehyde. The process examined is similar to the one owned by DuPont. In this process, starting formaldehyde (37wt% solution) is concentrated to a purity higher than 99.9wt% by means of two distillation steps and a treatment step. High purity formaldehyde is then polymerized in an inert cyclohexane medium. This report was developed based essentially on the following reference(s): (1) "Acetal Resins", Kirk-Othmer Encyclopedia of Chemical Technology, 5th edition (2) US Patent 2768994, issued to Du Pont in 1956 Keywords: Acetyl resin, polyoxymethylene (POM) resins, polymer of formaldehyde, DuPont, polyformaldehyde




Film Properties of Plastics and Elastomers


Book Description

Preface -- 1. Introduction to Plastics and Polymers -- 2. Chapter 2 - Introduction to the Mechanical, Thermal and Permeation Properties of Plastics and Elastomers -- 3. Production of films -- 4. Markets and Applications for films -- 5. Styrenic Plastics -- 6. Polyesters -- 8. Polyamides (Nylons) -- 9. Polyolefins -- 10. Polyvinyls & Acrylics -- 11. Fluoropolymers -- 12. High Temperature/High Performance Polymers -- 13. Elastomers and rubbers -- 14. Renewable Resource or biodegradable polymers -- Appendices -- Permeation Unit Conversion Factors -- Vapor Transmission rate Conversion factors.