New PTT & TPE biopolymers.DuPont Engineering Polymers, Wilmington, Del., is perhaps the first supplier to introduce engineering resins and TPEs based on renewable resources. Its new biopolymer-based products are Sorona polytrimethylene terephthalate (PTr) resin and Hytrel thermoplastic polyester elastomer. While these materials are both polyester-based, DuPont expects to expand its biopolymer bi·o·pol·y·mer n. A macromolecule, such as a protein or nucleic acid, that is formed in a living organism. biopolymer any protein or nucleic acid produced by a living organism. offering to nylons too. The key ingredient in both materials is DuPont's Bio-PDO (propanediol), which is derived from corn sugar using a patented bacterial fermentation process. Bio-PDO is a replacement for petrochemical-based PDO PDO Php Data Objects (PHP extension) PDO Protected Designation of Origin (EC) PDO Pacific Decadal Oscillation (weather) PDO Property Damage Only and/or butanediol (BDO BDO Big Day Out (Australian music festival) BDO Banco de Oro (Philippines) BDO 1,4-Butanediol BDO British Darts Organisation BDO Block Development Officer BDO Big Dumb Object ). Sorona PTT (1) (Postal, Telegraph & Telephone) The governmental agency responsible for combined postal, telegraph and telephone services in many European countries. (2) See push-to-talk. PTT - Post, Telephone and Telegraph administration is made by polymerizing Bio-PDO with either terephthalic acid or dimethyl terephthalate. PTT reportedly exhibits properties and molding characteristics similar to PBT PBT Provider Backbone Transport (networking technology adding determinism to ethernet) PBT Polybutylene Terephthalate PBT Profit Before Tax PBT Paper Based Test (education) but with improved surface appearance and gloss and a glass-transition temperature 15[degrees] to 20[degrees] C higher than PBT. Potential uses include automotive and electrical/electronic parts. Yazaki, a leading Japanese connector maker, has already demonstrated the viability of Sorona in automotive wire-harness connectors, according to DuPont. Meanwhile, the soft segments of biopolymer-based Hytrel grades will be made with a new polyol derived from Bio-PDO. Preliminary evaluations show a broader use-temperature range and better elastic recovery than current Hytrel materials. Targeted applications include automotive hose and tubing, blow molded CVJ CVJ Constant Velocity Joint CVJ Crevalle Jack (FAO fish species code) boots, and injection molded airbag doors and energy dampers. Sorona and Hytrel grades made with Bio-PDO will be available in mid-to late 2007. Tel: (800) 441-0575 * PTDirect. 412SX |
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