6 August 1998: Central Glass Co. of Japan has formulated an original technique for manufacturing HFC-245fa, a promising next-generation replacement substance for foaming agents for rigid polyurethane,…
6 August 1998: Central Glass Co. of Japan has formulated an original technique for manufacturing HFC-245fa, a promising next-generation replacement substance for foaming agents for rigid polyurethane, recent press reports said. The most salient characteristic of the technique is its cost advantage when compared to other processes patented in Japan and overseas. The company claims the substance can be offered at a comparatively reasonable price through mass production. At present, Central Glass is preparing samples of the product for market appraisal. Subsequent plans would then call for installing commercial production facilities in preparation for switching over to the new process. Following the complete phase-out of CFC-11, HCFC-141b has become the mainstream foaming agent for rigid polyurethane used as insulation in refrigerators and building materials. Central Glass commands a 50% share of the 15,000-tonne per year annual market for this product. From an environmental protection standpoint, however, HCFC-141b is also scheduled to be phased-out in Japan by the end of 2003. With users of the product demanding that alternatives be developed, HFC-245fa, with its zero ozone depletion potential, is viewed as a promising candidate.