US4500671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced polyurethane thermoplastic chemical materials and processes for their preparation
Assignee: Bayer AG
•
Filing: 1984-06-01
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Granted: 1985-02-19
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Expires: 2004-06-01
Abstract
Abstract The instant invention is directed to 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 a fibrous reinforcing material; and (C) from 36 to 3 parts, by weight, based on 100 parts of (A)+(B), of a polar polymer. The instant invention is also directed to a process for the production of the thermoplastic chemical materials.
Inventors
- 👤 Wilhelm Goyert
- 👤 Wolfgang Grimm
- 👤 Albert Awater
- 👤 Hans Wagner
- 👤 Bruno Kruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:06
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08K; C08K7/00; C08K7/02; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C08L33/18; C08L33/20; C08L9/00
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
131 words
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, α-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.
Claim 2
Dependent Claim
131 words
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, α-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.
Claim 3
Dependent Claim
23 words
The chemical material of claim 1, wherein said polar polymer is present in an amount of from 15 to 4 parts, by weight.
Claim 4
Dependent Claim
36 words
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 α-methylstyrene.
Claim 5
Dependent Claim
31 words
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° C.
Claim 6
Dependent Claim
22 words
The chemical material of claim 4, wherein said graft basis is a homo- or co-polymer of butadiene and/or acrylic acid alkyl esters.
Claim 7
Dependent Claim
31 words
The chemical material of claim 1, wherein component (B) is sized glass fibers having a diameter of from 8 to 30 mμ and a length of from 0.3 to 100 mm.
Claim 8
Dependent Claim
49 words
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.
Claim 9
Dependent Claim
141 words
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, α-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.
Claim 10
Dependent Claim
141 words
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, α-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.
Claim 11
Dependent Claim
29 words
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.
Claim 12
Dependent Claim
36 words
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.
Claim 13
Dependent Claim
25 words
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° C.
Claim 14
Dependent Claim
20 words
The chemical material of claim 11 in which the graft polymer backbone contains from 50 to 95 weight % diene.
Claim 15
Dependent Claim
25 words
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° C.
Claim 16
Dependent Claim
20 words
The chemical material of claim 1 in which the graft polymer backbone contains from 50 to 95 weight % diene.
Claim 17
Dependent Claim
20 words
The chemical material of claim 1 in which the graft polymer backbone contains from 75 to 95 weight % diene.
Claim 18
Dependent Claim
21 words
The chemical material of claim 1 in which the graft polymer backbone contains from 50 to 95 weight % 1,3-diene rubber.
Claim 19
Dependent Claim
25 words
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.
Claim 20
Dependent Claim
22 words
The chemical material of claim 1 in which the polar monomer is an acrylic acid alkyl ester and/or methacrylic acid alkyl ester.
Claim 21
Dependent Claim
22 words
The chemical material of claim 18 in which the alkyl group of the alkyl ester contains from 4 to 10 carbon atoms.
Claim 22
Dependent Claim
26 words
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.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |