Claims
- 1. A resinous homogeneous thermoplastic composition comprising (a) a first polyolefin selected from the group consisting of isotactic polypropylene, syndiotactic polypropylene and TPO and (b) a mixture of about 1 to 99% thermoplastic polyurethane and 1 to 99% of an agent, said percents being relative to the weight of said mixture, said agent comprising the product of a reaction of reactant (i) and reactant (ii) wherein
- (i) is a modified polyolefin having a molecular weight of about 2,000 to 600,000, selected from the group consisting of homopolymers, random and block copolymers said group polymerized from olefin monomers selected from the group consisting of ethylene, propylene, butylene and mixtures thereof, and mixtures of ethylene/C.sub.3-12 .alpha.,.beta.unsaturated alkenes characterized in having in a main or side chain thereof a functional group selected from the group consisting of carboxylic acid; C.sub.1-8 -carboxylate ester; carboxylic acid anhydride; carboxylate salts formed from the neutralization of carboxylic acid group(s) with metal ions from Groups I, II, III, IV-A and VIII of the periodic table; amide; epoxy; hydroxy; and C.sub.2-6 -acyloxy;
- wherein said functional group is part of an unsaturated monomer precursor which is either copolymerized with an olefin monomer or grafted onto a polyolefin to form said modified polyolefin, and where said functional group is present in the molar range of 0,005 to 5 percent relative to the weight of said modified polyolefin, and wherein
- (ii) is a polyamide resin which is a condensation product of one or more C.sub.4-40 -dicarboxylic acid with one or more C.sub.4-50 -diamine, said first polyolefin excluding said modified polyolefin.
- 2. The composition of claim 1 wherein said first polyolefin is isotactic polypropylene.
- 3. The composition of claim 1 wherein said first polyolefin is syndiotactic polypropylene.
- 4. The composition of claim 1 wherein said first polyolefin is TPO.
- 5. The composition of claim 1 wherein said polyamide is nylon x,y where x is an integer of 4 to 20 and y is an integer of 4 to 40.
- 6. The composition of claim 1 wherein said polyamide is nylon x,y,y' wherein x is an integer of 4 to 20 and y is an integer of 4 to 40 and y' is 36.
- 7. The composition of claim 1 wherein said thermoplastic polyurethane is present in an amount of about 60 to 80% and wherein said agent is present in an amount of about 40 to 20% said percents being relative to the weight of said mixture.
- 8. The composition of claim 1 wherein said functional group is carboxylic acid anhydride.
- 9. The composition of claim 8 wherein said anhydride is maleic acid anhydride.
- 10. The composition of claim 1 wherein molecular weight is about 3,000 to 300,000.
- 11. The composition of claim 1 wherein reaction entails equimolar reactants.
- 12. The composition of claim 1 wherein reaction entails excess reactant (ii).
- 13. The composition of claim 1 wherein thermoplastic polyurethane is based on a polyester polyol.
- 14. The composition of claim 1 wherein thermoplastic polyurethane is based on a polyether polyol.
- 15. A resinous homogeneous thermoplastic composition comprising (a) a first polyolefin selected from the group consisting of isotactic polypropylene, syndiotactic polypropylene and TPO and (b) a mixture of about 60 to 80% thermoplastic polyurethane and 40 to 20% of an agent, said percents being relative to the weight of said mixture, said agent comprising the product of a reaction of reactant (i) and reactant (ii) wherein
- (i) is a maleic anhydride grafted polypropylene having a molecular weight of about 2,000 to 300,000 having a maleic anhydride content of about 0.5% relative to the weight of said grafted polypropylene, and wherein
- (ii) is a polyamide resin selected from the group consisting of nylon 6,36 and nylon 6,6,36,
- said first polyolefin excluding said modified polyolefin.
Parent Case Info
This application is a continuation of application Ser. No. 08/335,430 filed Nov. 7, 1994 now abandoned which is a continuation of Ser. No. 08/118,367 filed Sep. 8, 1993 (now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2170502 |
Dec 1985 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Derwent Astract 24216V. |
Polyurethane-Polypropylene Blends, Z. S. Petrovic et al in J. Appl. Sci. 42, 1991, p. 779. |
Continuations (2)
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Number |
Date |
Country |
Parent |
335430 |
Nov 1994 |
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Parent |
118367 |
Sep 1993 |
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