B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1216, 18/637
B29C 70/02 (2006.01) B29C 44/00 (2006.01) B29C 45/00 (2006.01) B29C 67/24 (2006.01) C08G 63/682 (2006.01) C08K 3/00 (2006.01) C08K 7/14 (2006.01)
Patent
CA 1181559
Abstract A shaped article containing a polymer which is capable of exhibiting anisotropy in the melt characterised in that the ratio of the stiffness in any two directions at right angles in the shaped article differs by at least 10%, and preferably by at least 50%, from the ratio in the same two directions for a control sample made from a melt consisting entirely of the polymer in anisotropic form, and wherein there is present in the shaped article at least 10% by volume of an inert filler in the form of voids. These may be obtained by a variety of methods including disturbing the normal flow pattern of flow into a mould by including obstacles to flow in the mould, disturbing the pattern of flow by foaming in the mould, by using polymers capable of existing as a bi-phase anisotropic and isotropic melt and forming shaped articles in which this two-phase disposition is retained.
381869
Bailey Derrick S.
Cogswell Frederick N.
Griffin Brian P.
Barlow Charles Brian
Imperial Chemical Industries Plc
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