Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-05-12
1994-06-28
Short, Patricia A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 65, 525 68, 525132, 525151, 525395, 525396, 525397, 525423, 525424, 525425, 525437, 525438, 525439, 525440, 525450, 525466, C08L 6702, C08L 6703, C08L 6704
Patent
active
053247957
ABSTRACT:
The present invention relates to a polymer blend composition for melt molding which is a composition obtained by adding a thickener to a polymer blend comprising a liquid crystal polymer and a non-liquid crystal polymer, characterized in that the melt viscosity of the composition determined at a molding temperature at a shear rate of 1000 sec.sup.-1 is the same or higher than the melt viscosity of said non-liquid crystal polymer determined under the same conditions.
According to the present invention, a polymer blend for melt molding having improved properties, whereby problems observed in prior arts upon molding a polymer blend comprising a liquid crystal polymer and a non-liquid crystal polymer (for example, insufficient alignment of the liquid crystal polymer and difficulties in extrusion, because of excessively low melt viscosity) can be solved, is obtained.
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patent: 4438236 (1984-03-01), Cogswell
patent: 4451611 (1984-05-01), Cincotta
patent: 4460735 (1984-07-01), Froix
patent: 4728698 (1988-03-01), Isayev
patent: 4788251 (1988-11-01), Brown
patent: 4904746 (1990-02-01), Brown
patent: 4933429 (1990-06-01), McCracken
patent: 5171778 (1992-12-01), Dekkers
Short Patricia A.
Unitika Ltd.
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