Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1987-03-09
1988-08-30
Lilling, Herbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524504, 525 74, 525 75, 525 78, 525 80, C08K 714, C08L 5100, C08L 5104
Patent
active
047678178
ABSTRACT:
Shaped articles which have excellent solvent resistance and resistance to fatty acids are formed from a thermoplastic polyblend of poly(vinyl chloride) (PVC), chlorinated polyethylene (CPE), polyolefin (PO), and a graft copolymer of a polyolefin (PO-G). The thermoplastic polyblend contains a PO and PO-G (PO/PO-G) as a first continuous single phase, PVC and CPE as the second and third dispersed phases, and the relative amounts of the components are chosen so that there is, at most, an equal amount by weight of PO and PO-G each of which may be present in an amount as high as 40 parts by weight when the PVC is present in an amount in the range from 40 to 70 parts, so as to provide a mechanically compatible polyblend without miscibility or chemical compatibility. Further, a glass fiber reinforced (GFR) polyblend of PVC/CPE/PO/PO-G having a HDT of at least 95.degree. C. and sufficient thermoformability to form the desired article has excellent notched impact strength. In the GFR polyblend the fibers are preferably long, at least 3 mm, and from 10-20 microns in diameter. The high HDT is obtained provided only if both co-compatibilizers and glass fibers are present in the reinforced composite.
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Lilling Herbert J.
Lindsay James R.
Lobo Alfred D.
The B. F. Goodrich Company
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