Claims
- 1. A polyurethane corresponding to the formula: ##STR7## wherein Q is a divalent, mononuclear or dinuclear aromatic radical which is unsubstituted or is substituted by lower alkyl groups and which can contain, as a linking member, a lower alkylene group,
- X is one of the groups --O--Ph--Z--Ph--O-- and --OOC--(CH.sub.2).sub.y --COO--,
- Ph being an optionally substituted phenylene group,
- Z being an alkylene group having 1-4 carbons atoms, and
- y being an integer from 2 to 12,
- R is a hydrogen atom or a methyl group,
- Y is an alkylene radical having 2-6 carbon atoms,
- m is an integer from 4 to 50,
- n is an integer from 1 to 6, and
- o is an integer from 4 to 20.
- 2. A polyurethane according to claim 1, wherein Q represents an aromatic radical selected from the group consisting of phenylene, tolylene, xylylene, naphthylene, diphenylene, methyl-substituted diphenylene, ethyl-substituted diphenylene, and diphenylmethane and 2,2-diphenylpropane groups having free valencies in the 2-, 3- or 4-position of both nuclei.
- 3. A polyurethane according to claim 1, wherein Q represents a tolylene radical.
- 4. A polyurethane according to claim 1, wherein Y represents an alkylene radical selected from the group consisting of ethylene; 1,2-propylene; and 1,4-butylene.
- 5. A polyurethane according to claim 1, wherein X represents a radical corresponding to the formula
- --O--Ph--Z--Ph--O--
- Ph represents an optionally-substituted phenylene radical and Z represents an alkylene radical in which the free valencies are both at the same carbon atom.
- 6. A polyurethane according to claim 5, wherein Ph represents a phenylene radical bearing at least one substituent selected from the group consisting of alkyl groups containing from 1 to 4 carbon atoms, alkoxy groups containing from 1 to 4 carbons atoms and halogen.
- 7. A polyurethane according to claim 5, wherein Z represents an alkylene radical selected from the group consisting of methylene and 2,2-propylene.
- 8. A polyurethane according to claim 1, wherein X represents a radical corresponding to the formula: ##STR8##
- 9. A polyurethane according to claim 1, wherein X represents a radical corresponding to the formula:
- --OOC--(CH.sub.2).sub.y --COO--
- and y represents an integer from 2 to 6.
- 10. A polyurethane according to claim 9, wherein X represents a radical corresponding to the formula:
- --OOC--(CH.sub.2).sub.4 --COO--
- 11. A polyurethane according to claim 1, wherein R represents a methyl radical.
- 12. A polyurethane according to claim 1, wherein m represents an integer from 8 to 20; n represents an integer from 2 to 4; and o represents an integer from 5 to 12.
- 13. A polyurethane according to claim 1, wherein Q represents a tolylene group; Ph represents an unsubstituted phenylene group; Z represents an alkylene radical selected from the group consisting of methylene and 2,2-propylene; y represents an integer from 2 to 6; R represents methyl; and Y represents an alkylene radical selected from the group consisting of ethylene, 1,2-propylene, and 1,4-butylene.
- 14. A polyurethane according to claim 1, having a reduced specific viscosity lying in the range from about 0.15 to about 1.4 dl/g, measured in a 1% solution in dimethylformamide at 25.degree. C.
- 15. A polyurethane according to claim 1, wherein said reduced specific viscosity lies in the range from about 0.2 to about 0.9 dl/g.
- 16. A molding composition comprising a polyurethane according to claim 1 and a compatible filler.
- 17. A molding composition according to claim 16, wherein said filler is selected from the group consisting of carbon black, wood flour, powdered glass, calcium carbonate, and thermoplastic resins.
- 18. An elastomeric body comprising a cross-linked polyurethane according to claim 1.
- 19. A foamed elastomer body comprising a polyurethane according to claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3036694 |
Sep 1980 |
DEX |
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Parent Case Info
This is a division of application Ser. No. 302,687, filed Sept. 15, 1981.
US Referenced Citations (17)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1441108 |
Apr 1974 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
302687 |
Sep 1981 |
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