DuPont presents its latest technological developments in the K

Materials of high-performance, one of the five organizational platforms of DuPont, in 2003 recorded a growth of 9 percent over the previous year. Engineering polymers (EP) is the largest of several businesses that make up the platform of high performance materials for the company, where the r & d is always present.

A very low pad made with DuPont Delrin solves the problems of friction.

Engineering Polymers business has recently garnered some success in their innovation activities. In functional aesthetics, DuPont is building a competition of complete technology around the decorative polymer engineering. They started with paraformaldehyde Delrin, which is the resin harder to decorate, which is a lubricated and shiny surface by nature. The company has developed technology of acetal for painting, granular in chrome, and has a wide range of technologies including the formulation and attack of resins, covered by five patent applications. For applications in painting, a fundamental part of the equation is the use of selected paintings of coated high performance of DuPont. Applications in cosmetics, sports items, medical devices, rings as accessories are currently developing.

In development, other material, Shine-E Rynite, expands the boundaries of the replacement of the metal by plastics. It combines a very high surface brightness with the possibilities of high temperature and structural properties of the reinforced PET thermoplastic polyester. Those cars painted with this new resin panels will weigh less than the equivalent piece of metal.

To produce high performance Zytel HTN polyamides, new and unique process technologies have been developed. While other companies in related fields are working with processes of two-phase, DuPont has a continuous polymerization process. This gives them significant advantages with regard to the purity, performance and efficiency. In addition, the company plans to begin construction of a plant of continuous polymerization process next year.

Innovative wheelchairs with Zytel and Hytrel.

In the past, it was difficult to get a good bond between plastics were not similar chemically. However, DuPont has developed the structural Union, a new technology that allows a strong almost any plastic Union dissimilar using any process that a two surfaces in the molten state. Examples of such processes are the molding of double component, the sobremoldeado or any type of welding. The structural bonding technology consists of a specially developed micro-porous strained layer which is a strong physical Union between the two materials. DuPont has two patent applications that cover this discovery.

More comfortable closing window with a sleeve of Delrin

The company has also developed a patented technology to produce a type of membrane with a unique set of properties. Referred to as active membrane, it is a complete barrier to water or other liquids, but that "breathes": allows the passage of water vapor. In other microporosas membranes and hydrophobic, water vapor is transferred via a network of open pores. They can get stuck, and the tension of the surface of the fluid that is in contact affects the performance of these membranes. The active membrane has many possible applications; It is now marketed as coating of ceilings, which are placed under the shoe to prevent rain and snow to enter while leaving it transferred water vapor. Its excellent performance allows that these coverings used ceilings with a swing of 5 °, while the practical limit of earlier models was 10 °.

The polymer industry and others employ dioxide of titanium or TiO2, as white pigment. DuPont has developed a new technology of finish that would apply to even 3 organic or inorganic coatings of crystals of TiO2. This makes the TiO2 rather than a simple white pigment; also it can become aid processing, or an additive to exert its influence on a wide variety of final products, such as for example effects antimicrobial and self-cleaning. This type of composition reduces costs and improves the quality, as selected additives are added in a precise way to the TiO2 of order who is composing. Its initial market Center has been the polymer industry, although other segments of the market as the coatings industry and paper industry are being evaluated.

With Zytel HTN of high-performance, new and unique process technologies have been developed

A key role of technology consists in sustainable development. Recycling of plastics, mainly of packaging, is a business under way in many parts of the planet, but there has been many initiatives in this field in the automotive sector. DuPont has developed a technology composed of recycled nylon to help the car industry to achieve the objectives of the European directive in the field of recycling. It's a process of closed-loop that begins with pieces of vehicle used nylon reinforced with glass or mineral and that becomes the equivalent of Virgin material. Together with its Japanese partner, Denso Corporation, DuPont has investigated the possibility of a potential closed loop on a large scale recycling piece by piece. We collected 500 tanks frontal radiators manufactured in nylon 66 of dilapidated cars from Japan. The material was degraded by age in contact with the coolant from the engine. Tanks were reduced and introduced the particles in the prototype reactor. To dissolve the polymer, filtering the fibers of glass and pollutants, precipitating, drying and rebuilding the polymer, there was a new nylon 66, which exceeded the requirements of the customers of the automotive company Denso-like.