Claims
- 1. A multiphase composition which is a reaction product formed by mixing Nylon 66 and a block or graft copolymer, said mixing step being a melt blending or a dry mixing followed by melt mixing at a temperature at from about 400.degree. F. to about 650.degree. F. and at a shear rate from about 500 sec.sup.-1 to about 2000 sec.sup.-1 and comprising:
- from about 5 to about 95 percent by weight of said polyamide,
- from about 5 to about 95 percent by weight of said block or graft copolymer which is formed by mixing at a reaction temperature of from about 200.degree. to about 500.degree. F. and at a shear rate of from about 500 sec.sup.-1 to about 2,000 sec.sup.-1 in the presence of free radicals so as to cause a chemical coupling of at least a first and second polymer components, said first polymer component comprising one or more rubber polymers and said second polymer component comprising one or more reactive polymers having a reactive functionality reactive with said polyamide, said reactive polymer having a mole fraction of less than 0.5 of said reactive functionality, said reactive functionality being selected from the group consisting of an unsaturated dicarboxylic acid, an unsaturated monocarboxylic acid, an anhydride of a dicarboxylic acid, a monoester, a sulfonic acid, and an epoxy, or said reactive polymer having a salt of said reactive functionality; said rubber containing unsaturation and having a glass transition temperature of minus 40.degree. C. or less or an elongation of 100 percent or greater at room temperature and comprising at least one of said polymers or copolymers made from one or more of butadiene, ethylene propylene diene monomer, isoprene, and neoprene; or at least one of polymers or copolymers of halogenated unsaturated rubber, polyisoprene, nitrile rubbers, unsaturated polyurethane rubber, unsaturated polyester rubbers, and unsaturated block copolymers.
- 2. A composition as set forth in claim 1, wherein the composition is a at least a two-phase composition having a continuous phase and a dispersed phase, wherein said Nylon 66 comprises the continuous phase and the block or graft copolymer comprises the dispersed phase, and said dispersed phase is present in the form of particles having a weight average particle size of from 1 to about 100 microns.
- 3. A composition as set forth in claim 2, wherein the composition has a notched Izod value of at least of 2 ft-lbs/inch.
- 4. A composition as set forth in claim 3, wherein the composition comprises from about 30 to about 85 percent by weight of the polymers of the Nylon 66.
- 5. A composition as set forth in claim 6, wherein said composition comprises from about 40 to about 80 percent by weight of the polymers of the Nylon 66.
- 6. A composition as set forth in claim 7, wherein said composition has a notched Izod value of at least 4 ft-lbs/inch.
- 7. A composition as set forth in claim 6, wherein said reactive functionality is selected from the group consisting of dicarboxylic acid groups and salts thereof, sulphonic acid groups, and salts thereof, and epoxy.
- 8. A composition as set forth in claim 7, wherein said Nylon 66 is a semi-crystalline or amorphous resin and is produced by the reaction of approximately equimolar amounts of at least one dicarboxylic acid and at least one diamine.
- 9. The composition according to claim 8, wherein a molded article produced from said polymer composition has a notched Izod of at least 9 ft-lb/inch at 23.degree. C. and at least about 3.0 ft-lb/inch at minus 40.degree. C.
- 10. The polymer according to claim 9, wherein said dispersed phase has a weight average particle size of from about 1.5 to about 40 microns.
- 11. The polymer according to claim 10, wherein said dispersed phase has a weight average particle size of from about 3.5 to about 15 microns.
- 12. The polymer according to claim 11, wherein said reactive polymer has an ethylene unit therein.
- 13. A composition as set forth in claim 12 wherein said block or graft copolymer is formed by mixing said one or more rubber polymers and said one or more reactive polymers in the presence of high shear.
- 14. A composition as set forth in claim 13 wherein said mixing takes place at shear rates of from about 500 to about 2,000 sec.sup.-1.
- 15. A composition as set forth in claim 1 wherein said block or graft copolymer is in the form of an extrudate.
- 16. A composition as set forth in claim 1 wherein said rubber is made from one or more diene monomers or from one or more nitrile monomers.
Parent Case Info
This application is a continuation of application Ser. No. 07/288,736, filed on Dec. 22, 1988, by Anthony S. Scheibelhoffer et al, for TOUTHENED COMPOSITIONS OF POLYAMIDE AND FUNCTIONALIZED RUBBER BLOCK OR GRAFT COPOLYMERS now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (6)
Number |
Date |
Country |
0072480 |
Feb 1983 |
EPX |
62-74943 |
Apr 1987 |
JPX |
0998439 |
Jul 1965 |
GBX |
998439 |
Jul 1965 |
GBX |
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GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
288736 |
Dec 1988 |
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