Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-10-29
1996-05-21
Cain, Edward
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
524539, 524556, 525437, 525441, 525448, 525452, 525453, C08S 2000
Patent
active
055190944
ABSTRACT:
Thermoplastic molding compositions and articles comprise immiscible thermoplastic polymer components and reinforcing fibers. The immiscible thermoplastic polymer components and the fibers are blended together under high shear conditions. The molding composition generally contains at least two phases and has an extremely smooth and fiber-free surface. Generally, other very good physical properties are obtained such as high heat distortion temperatures, high tensile modulus, high flex modulus, and the like are also very good. A desired blend of thermoplastic components is thermoplastic polyurethane and modified polyethylene terephthalate with glass fibers. The molded polyethylene terephthalate copolyester blended with an immiscible thermoplastic polymer, preferably modified polyurethane, and glass fibers produces thermoplastic molding compositions and articles having surprisingly superior impact strength. In addition, if the thermoplastic polyurethane is modified by an aromatic polyester polyol, and blended with a modified polyethylene terephthalate, no fibers are necessary to produce compositions having greatly improved processability.
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Kolycheck Edmond G.
Tseng Hsiungto S.
B. F. Goodrich Company
Cain Edward
Odar Helen A.
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