Claims
- 1. Thermoplastic chemical material comprising
- (A) from 60 to 97%, by weight, based on (A)+(B), of a thermoplastic polyurethane; and
- (B) from 40 to 3%, by weight, based on (A)+(B), of glass fiber reinforcing material; and
- (C) from 36 to 3 parts, by weight, based on 100 parts of (A)+(B), of a polar polymer containing at least 30% by weight of butadiene, isoprene and/or acrylic acid ester units which is a graft polymer having a rubbery polymer backbone containing butadiene, isoprene and/or acrylic ester units and grafted polar monomer selected from the group consisting of acrylic acid alkyl esters, methacrylic acid alkyl ester and/or acrylonitrile, styrene, .alpha.-methyl styrene and mixtures thereof in which the proportion, by weight of graft polymer backbone to graft monomer is in the range from 50:50 to 95:5.
- 2. The chemical material of claim 1, wherein said polar polymer is present in an amount of from 15 to 4 parts, by weight.
- 3. The chemical material of claim 1, wherein said polar polymer contains more than 20%, by weight, of one or more of the polar monomers, acrylic acid alkyl esters, methacrylic acid alkyl esters, acrylonitrile, styrene and .alpha.-methylstyrene.
- 4. The chemical material of claim 1, wherein said graft basis is an elastomer having a 1,3-diene content of from 50 to 95%, by weight, and a freezing temperature below -30.degree. C.
- 5. The chemical material of claim 4, wherein said graft basis is a homo- or co-polymer of butadiene and/or acrylic acid alkyl esters.
- 6. The chemical material of claim 1, wherein component (B) is sized glass fibers having a diameter of from 8 to 30 m.mu. and a length of from 0.3 to 100 mm.
- 7. The chemical material of claim 1, wherein said component (A) is prepared from a long chain polyol having a molecular weight from 400 to 10,000, a diisocyanate, and a chain-extending agent having a molecular weight of 400 or less, and wherein the NCO/OH ratio is from 0.95:1 to 1.10:1.
- 8. A process for the production of thermoplastic chemical materials, comprising mixing and co-extruding:
- (A) from 60 to 97%, by weight, based on (A)+(B), of a thermoplastic polyurethane; and
- (B) from 40 to 3%, by weight, based on (A)+(B), of a glass fiber material; and
- (C) from 36 to 3 parts, by weight, based on 100 parts of (A)+(B), of a polar polymer containing at least 30% by weight of butadiene, isoprene and/or acrylic acid ester units which is a graft polymer having a rubbery polymer backbone containing butadiene, isoprene and/or acrylic ester units and grafted polar monomer selected from the group consisting of acrylic and alkyl esters, methacrylic acid alkyl esters, and/or acrylonitrile, styrene, .alpha.-methyl styrene and mixtures thereof in which the proportion by weight of a graft polymer backbone to graft monomer is in the range from 50:50 to 95:5.
- 9. The process of claim 8, wherein components (B) and (C) are added to the polyurethane-forming components before or during preparation of component (A) in a double shaft screw extruder.
- 10. The chemical material of claim 1 in which the polar polymer is a graft polymer in which the proportion by weight, of graft polymer backbone to graft monomer is in the range from 70:30 to 87.5:12.5.
- 11. The chemical material of claim 10 in which the graft polymer backbone is a rubber-like polymer having a glass transition temperature lower than -30.degree. C.
- 12. The chemical material of claim 11 in which the graft polymer backbone contains from 50 to 95 weight % diene.
- 13. The chemical material of claim 1 in which the graft polymer backbone is a rubber-like polymer having a glass transition temperature lower than -30.degree. C.
- 14. The chemical material of claim 1 in which the graft polymer backbone contains from 50 to 95 weight % diene.
- 15. The chemical material of claim 1 in which the graft polymer backbone contains from 75 to 95 weight % diene.
- 16. The chemical material of claim 1 in which the graft polymer backbone contains from 50 to 95 weight % 1,3-diene rubber.
- 17. The chemical material of claim 1 in which the graft polymer backbone contains from 50 to 95 weight % butadiene, isoprene and/or acrylic ester units.
- 18. The chemical material of claim 1 in which the polar monomer is an acrylic acid alkyl ester and/or methacrylic acid alkyl ester.
- 19. The chemical material of claim 18 in which the alkyl group of the alkyl ester contains from 4 to 10 carbon atoms.
- 20. The chemical material of claim 1 in which the graft monomer is a mixture of styrene and acrylonitrile in a proportion of from 9:1 to 1:1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2854406 |
Dec 1978 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 103,003, filed Dec. 13, 1979, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
2337706 |
Feb 1974 |
DEX |
1333188 |
Oct 1973 |
GBX |
1357904 |
Jun 1974 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
103003 |
Dec 1979 |
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