1988 Ed.]
Import and Export (Strategic Commodities) Regulations
[CAP. 60
G 145
[Subsidiary]
IL 1749
(b) Polybenzimidazoles;
(c) Aromatic polyamides, except:
(1) Filament yarns, staple fibres, chopped fibres, spun yarns or threads, having both of the following characteristics:
(1) A "fibre modulus" of 22.075 N per tex or less; and
(ii) "Tenacity" of 0.970 N per tex or less;
(2) Pulp made from materials described under (c)(1) above;
Note:
This sub-item also covers heterocyclic aromatic polyamides characterized as aromatic due to the presence of a benzene ring.
(d) Polybenzothiazoles;
(e) Polyoxadiazoles
(f) Polyphosphazenes (Polyphosphonitriles);
(g) Polystyrylpyridine (PSP);
(h) Thermoplastic liquid crystal copolyesters, as follows:
(1) Ethylene copolyesters of terephthalic acid and parahydroxybenzoic acid, except manufactures thereof, having both of the following characteristics:
(1) A tensile modulus of less than 15 GPa; and
(ii) Specially designed for non-aerospace, non-electronic civil applications;
(2) Phenylene or biphenylene copolyesters of terephthalic acid and parahydroxybenzoic acid.
(i) Polybenzoxozoles;
(j) Aromatic polyether ether ketones (PEEK);
(k) Polymeric products of butadiene, as follows:
(1) Carboxyl terminated polybutadiene; hydroxyl terminated polybutadiene; thiol terminated polybutadiene; and cyclised 1,2-polybutadiene;
(2) Mouldable copolymers of butadiene and acrylic acid;
(3) Mouldable terpolymers of butadiene, acrylonitrile and acrylic acid or any of the homologues of acrylic acid;
(1) Carboxyl terminated polyisoprene.
Note:
(See also Item IL 1564).
This item does not embargo manufactured articles where the value of the polymeric component together with materials embargoed by other items is less than 50 per cent of the total value of the materials used.
Technical Note:
The characteristics referred to in sub-item (c) are defined as follows, in accordance with the ASTM Standard D2101-72:
(a) "Tenacity": tensile stress when expressed as force per unit linear density of the unstrained specimen, i.e. Newton per tex.
(b) "Fibre Modulus" (secant modulus): ratio of change in stress to change in strain between two points on a stress-strain curve, particularly the points of zero stress and breaking stress, and is expressed in Newton per tex.
N.B.
"Tex" is the number of grams in 1,000 metres of material.
Polycarbonate sheet of 1.5 mm (0.060 inch) to 25.4 mm (1 inch) thickness, having no "major defects" and having all of the following optical characteristics—
(a) Less than 2 per cent haze as determined by method ASTM D1003;
(b) An angular deviation, as determined by method ASTM D637, as follows:
(1) Not more than 12 minutes at any location more than 25.4 mm (1 inch) from the edge of the sheet for sheet thickness of 1.5 mm (0.060 inch) to 9.5 mm (0.375 inch); or
(2) Not more than 20 minutes at any location more than 25.4 mm (1 inch) from the edge of the sheet for sheet thickness over 9.5 mm (0.375 inch) to 25.4 mm (1 inch);
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