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March Chementator briefs

By Edited by Gerald Ondrey |

    A new Kraft pulp Weyerhaeuser Co. (Federal Way, Wash.; www.weyerhaeuser.com) says it has begun commercial production of a new grade of Kraft pulp for the cellulose derivatives market. Cellulose derivatives are used in various products, including lacquers, paints, inks and thickening agents. The new pulp, called Pearl429, “is essentially a new class of softwood Kraft pulp,” says Don Atkinson, vice-president of marketing and new product development for Weyerhaeuser Cellulose Fibers. The company declines to give details on the production process, except to say that it is a continuous Kraft process, whereas many other specialty pulps are made by a batch process. The new method is said to generate higher yields than typical dissolving pulp manufacturing processes, from the same amount of raw materials, with better product uniformity. Weyerhaeuser adds that Pearl429’s characteristics allow it to be used in various applications that use cellulose esters and ethers. Bioacrylic milestone Since beginning pilot-scale development six months ago, OPX Biotechnologies, Inc. (Boulder, Col.; www.opxbiotechnologies.com) has reduced bioacrylic production cost by 85% towards the commercial target of 50¢/lb. The company…
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