Polyphthalamide composition
First Claim
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1. A blend comprising a polyphthalamide having at least about 50 mole percent recurring units represented by the formula:
- ##STR3## wherein R comprises at least one divalent aliphatic radical having from 4 to 14 carbon atoms, a functionalized polyolefin having as reactive functionality grafted or copolymerized carboxylic acid or derivative thereof and a pendant succinic anhydride-functionalized block copolymer said block copolymer comprising polymerized styrene blocks add rubber blocks comprising ethylene/propylene, ethylenic/butylene or ethylene/pentylene polymer blocks or a combination thereof.
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Abstract
Filled and unfilled polyamide compositions of improved toughness comprise a blend of a polyamide comprising recurring aliphatic terephthalamide units, a functionalized polyolefin and 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.
75 Citations
13 Claims
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1. A blend comprising a polyphthalamide having at least about 50 mole percent recurring units represented by the formula:
- ##STR3## wherein R comprises at least one divalent aliphatic radical having from 4 to 14 carbon atoms, a functionalized polyolefin having as reactive functionality grafted or copolymerized carboxylic acid or derivative thereof and a pendant succinic anhydride-functionalized block copolymer said block copolymer comprising polymerized styrene blocks add rubber blocks comprising ethylene/propylene, ethylenic/butylene or ethylene/pentylene polymer blocks or a combination thereof.
- View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A blend comprising (a) from about 50 to about 92.5 wt % of a polyphthalamide having from 50 to 100 mole % terephthalamide units represented by the formula:
- ##STR4## wherein R comprises at least one C4 -C14 divalent aliphatic radical; and
correspondingly, from 0 to about 50 mole % of at least one additional unit selected from the group consisting of adipamides, isophthalamides, and 2,6-naphthalene dicarboxylamides;
dicarboxylamides;
(b) from about 5 to about 47.5 wt % of a functionalized polyolefin having as reactive functionality grafted or copolymerized carboxylic acid or derivative thereof; and
(c) from about 2.5 to about 10 wt % 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 and about 0.5 to about 5 wt % pendant succinic anhydride groups, the percentages of (a), (b) and (c) based on the total weight of said components. - View Dependent Claims (9)
- ##STR4## wherein R comprises at least one C4 -C14 divalent aliphatic radical; and
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10. A method for improving toughness of blends comprising (a) polyterephthalamide having at least 50 mole per cent recurring units represented by the formula:
- ##STR6## wherein R comprises at least one C4 -C14 divalent aliphatic radical; and
(b) functionalized polyolefins having as reactive functionality grafted or copolymerized carboxylic acid or derivative thereof, said method comprising compounding therewith from about 2.5 to about 10 wt %, based on total resin components, of a pendant succinic anhydride-functionalized block copolymer said copolymer comprising polymerized styrene blocks and rubber blocks comprising ethylene/propylene, ethylene/butylene or ethylene/pentylene polymer blocks, or a combination of such blocks. - View Dependent Claims (11, 12, 13)
- ##STR6## wherein R comprises at least one C4 -C14 divalent aliphatic radical; and
Specification