if the phenol has an alkyl group with four or more carbon atoms (for example, a butyl group) in the -position, the resulting polymer is soluble in oils. such polymers also have lighter colours. uses of phenol-methanal plastics the polymers with giant three-dimensional, cross-linked structures form resins...
non-substantive amendments), or any waiver of a provision of the code that applies to hexcel's chief executive officer, chief financial officer or corporate controller, will be promptly disclosed in this corporate governance section of our website. home products carbon fiber fabrics/reinforcements prepregs & resins...
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strength, ramie has had limited acceptance for textile use. the fibre's extraction and cleaning are expensive, chiefly because of the several steps—involving scraping, pounding, heating, washing, or exposure to chemicals . some or all are needed to separate the raw fibre from the adhesive gums or resins...
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