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Category 1 - SPECIAL MATERIALS AND RELATED EQUIPMENT

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1C008  Non-fluorinated polymeric substances, as follows:

        (a) (1) Bismaleimides;
          (2) Aromatic polyamide-imides;

          (3) Aromatic polyimides;

          (4) Aromatic polyetherimides having a glass transition temperature (Tg) exceeding 513 K (2400C); (L.N. 95 of 2006)
            Note:1C008(a) includes substances in liquid or solid "fusible" form, including resin, powder, pellet, film, sheet, tape and ribbon.  (L.N. 226 of 2009)
            N.B.:
            For non-"fusible" aromatic polyimides in film, sheet, tape or ribbon form, see 1A003.  (L.N. 226 of 2009)

          (b) Thermoplastic liquid crystal copolymers having a heat distortion temperature exceeding 523 K (2500C) measured according to ISO 75-2(2004), method A, or national equivalents, with a load of 1.80 N/mm2 and composed of: (L.N. 95 of 2006; L.N. 254 of 2008)

            (1) Any of the following:
              (a) Phenylene, biphenylene or naphthalene; or
              (b) Methyl, tertiary-butyl or phenyl substituted phenylene, biphenylene or naphthalene; and

            (2) Any of the following acids:
              (a) Terephthalic acid;
              (b) 6-hydroxy-2 naphthoic acid; or
              (c) 4-hydroxybenzoic acid;

          (c) (Repealed L.N. 254 of 2008)

          (d) Polyarylene ketones;

          (e) Polyarylene sulphides, where the arylene group is biphenylene, triphenylene or combinations thereof;

          (f) Polybiphenylenethersulphone having a glass transition temperature (Tg) exceeding 513 K (240oC); (L.N. 95 of 2006)
        Technical Note:
        The glass transition temperature (Tg) for 1C008 materials is determined using the method described in ISO 11357-2 (1999) or national equivalents. (L.N. 95 of 2006)
     
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    Last Updated Date : 30 May 2011