Udel polysulfone

As of November 1, 1995, the price range of UDEL polysulfone resias ia large quantities was 9.10— 12.03/kg depending on grade and color. RADEL A polyethersulfone grades sold for 10.46— 13.26/kg and the prices of RADEL R polyphenylsulfone resias were ia the range 15.75— 25.95/kg. MINDEL resias based oa polysulfoae had Hst prices betweea 6.72— 7.42/kg. 

Polyarylsulfones are a class of high-use temperature thermoplastics that characteristically exhibit excellent thermal-oxidative resistance, good solvent resistance, hydrolytic stability, and creep resistance (10). In 1965, Union Carbide announced a thermoplastic polysulfone based on dichlorodiphenylsulfone and bisphenol A (11). This polysulfone became commercially available in 1966 and was designated as Udel polysulfone. Since 1966, Imperial Chemical Industry (ICI), Minnesota Mining and Manufacturing (3-M), and Union Carbide have commercialized polyarylsulfones that contain only aromatic moieties in the polymer structure. These materials have been designated Vlctrex polyethersulfone (ICI), Astrel 360 (3-M), and Radel polyphenylsulfone (Union Carbide). 

Udel Polysulfone Poly(bisphenol A sulfone) Solvay... 

Routes to aromatic polysulphones were discovered independently and almost simultaneously in the early 1960 s in the laboratories of the 3H Corporation (3) and Union Carbide Corporation (6) in the USA and at the Plastics Division of ICI in the UK (4). All three companies have since commercialised their disciveries. In 1963 Union Carbide introduced Udel Polysulfone which is rated to have a continuous use tmp-... 

Udel"Polysulfone (Union Carbide Corporation) -[O 2 -O " -0- 2 0 Tg 375°F injection moulds in conventional equipment... 

Panek, J.R., Polysulflde sealants and adhesives (Chapter 22). Handbook of Adhesives (1. Skeist, ed.), 3rd ed., Van Nostrand Reinhold, New York, 1990. Udel Polysulfone for High-Temperature Structural Adhesive Applications, Solvay Advanced Polymers, Udel Polysulfone Product Data, Solvay Corp., www.SolvayAdvancedPolymers.com, 2005. 

Solvay Advanced Polymers, Udel Polysulfone Design Guide, Adhesive Bonding, www.solvayadvancedpolymers.com, 2006. 

UDEL Polysulfone Design Guide Version 2.1. Solvay Advanced Polymers 2009. 

The first of the sulfone polymers was introduced commercially hy Union Carbide Corp. in 1965 as Udel Polysulfone, and it carries the following repeat unit structure ... 

Two types of polysulfone are eommonly used in the manufacture of membranes Vitrex poly-(ether sulfone) and Udel polysulfone. Their molecular structures are showed in Scheme 2. 

A marketing study concluded that significant opportunities existed based on the differentiated performance of Polysulfone, namely high temperature resistance and hydrolytic stability. Thus UDEL Polysulfone was introduced by Union Carbide in 1965 based on a commercial manufacturing plant in Marietta, Ohio. 

The main purpose of the second conference held on April 7, 1965 was to announce the development of a new heat resistant structural plastic UDEL Polysulfone and to also announce the construction of a plant to produce this product. In attendance were representatives of the following publications Chemicals Engineering. Plastics Technology. Modern Plastics. 

The production facility began producing commerical product in January 1966, and since then UDEL Polysulfone has gained significant market acceptance. 

UDEL Polysulfone is prepared by a nucleophilic substitution reaction between the disodium salt of bisphenol A and 4,4 -dichlorodiphenyl sulfone yielding the following structure ... 

The excellent thermal stability of polysulfone is verified by thermal gravimetric analysis which shows that UDEL Polysulfone is stable to air up to 450°C (840°F). The excellent thermal stability coupled with excellent oxidation resistance of polysulfones provides excellent melt stability for molding and extrusion. 

Union Carbide UDEL Polysulfone has the structure shown previously. This structure was selected as offering the best combination of properties, ease of fabrication and economics. The traditional form of property presentation at room temperature is shown in Table I. 

First, let s consider polysulfone properties vs. temperature. Some highlight properties of UDEL Polysulfone vs. temperature are shown in Table... 

The retention of properties of UDEL Polysulfone on exposure to high temperatures for prolonged periods of time and to externally applied stress is shown in Table III. 

All these factors are taken into consideration when assigning recommended continuous use temperatures for materials of construction. UDEL Polysulfone has a maximum use temperature of 300 F-340 F, the same as that for general purpose phenolic molding materials. 

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