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US 6,306,951 B1Granted
Polyphthalamide composition
AssigneeBP Corporation North America Inc.
InventorsRuth Ann Montag, George Albert Corbin, David William Garrett
Life of this patent
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Abstract
Filled and unfilled polyamide compositions of improved toughness comprise a polyamide component comprising recurring aliphatic terephthalamide units and a modifying component comprising a functionalized block copolymer comprising styrene polymer blocks and rubber blocks comprising ethylene/propylene, ethylene/butylene, or ethylene/pentylene polymer blocks or a combination thereof.
Claims7
A filled polyamide composition consisting of:
- (a) from about 99 to about 92 wt %, based on resin components (a) and (b), of a polyphthalamide consisting of recurring units represented by the formula:
- wherein the mole ratio of A:B:C units lies in range 100-50:0-35:0-50, and wherein R comprises at least one divalent aliphatic radical having from 4 to 14 carbon atoms;
- (b) from about 1 to about 8 wt % based on resin components (a) and (b) of a pendant succinic anhydride-functionalized block copolymer comprising polymerized styrene blocks and rubber blocks comprising ethylene/propylene, ethylene/butylene or ethylene/pentylene polymer blocks or a combination thereof;
- (c) from about 10 to about 60 wt %, based on total composition, of at least one filler selected from particulate filler and structural fiber;
- and
- (d) from 0 to 200 pbw, per hundred parts combined weight of components (a) and (b), of at least one additional component selected from the group consisting of pigments, colorants, stabilizing additives, and lubricants.
3 more elements
Dependencies are inferred from the claim text.