US4399239A
Expired / Lapsed
US
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Elastomeric, ethylenically unsaturated polyurethanes and radiation polymerizable mixtures containing such polyurethanes
Assignee: Hoechst AG
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Filing: 1982-07-21
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Granted: 1983-08-16
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Expires: 2002-07-21
Abstract
Abstract A polyurethane corresponding to the formula: <IMAGE> (I) <IMAGE> wherein Q is a divalent, mononuclear or dinuclear aromatic radial 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-(CH2)y-COO-, Ph being an optionally substituted phenylene group, Z being an alkylene group having 1-4 carbon atoms and y being a number 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 having the properties of thermolasts and being hardenable to give elastic products. It is suitable for use as a hardenable constituent of photopolymerizable materials.
Inventors
- 👤 Walter Herwig
- 👤 Kurt Erbes
- 👤 Rudolf Decker
- 👤 Helga Sikora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:10
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/032; C08F; C08F299/00; C08F299/02; C08F299/06; C08F299/065; C08G18/30; C08G18/32; C08G18/6705; C08G18/675; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31605; Y10T428/31786
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
120 words
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 2 ) 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.
Claim 2
Dependent Claim
120 words
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 2 ) 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.
Claim 3
Dependent Claim
44 words
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.
Claim 4
Dependent Claim
12 words
A polyurethane according to claim 1, wherein Q represents a tolylene radical.
Claim 5
Dependent Claim
22 words
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.
Claim 6
Dependent Claim
40 words
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.
Claim 7
Dependent Claim
43 words
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.
Claim 8
Dependent Claim
21 words
A polyurethane according to claim 5, wherein Z represents an alkylene radical selected from the group consisting of methylene and 2,2-propylene.
Claim 9
Dependent Claim
16 words
A polyurethane according to claim 1, wherein X represents a radical corresponding to the formula: ##STR8##
Claim 10
Dependent Claim
26 words
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.
Claim 11
Dependent Claim
17 words
A polyurethane according to claim 9, wherein X represents a radical corresponding to the formula: --OOC--(CH.sub.2).sub.4 --COO--
Claim 12
Dependent Claim
12 words
A polyurethane according to claim 1, wherein R represents a methyl radical.
Claim 13
Dependent Claim
32 words
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.
Claim 14
Dependent Claim
59 words
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.
Claim 15
Dependent Claim
32 words
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° C.
Claim 16
Dependent Claim
22 words
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.
Claim 17
Dependent Claim
14 words
A molding composition comprising a polyurethane according to claim 1 and a compatible filler.
Claim 18
Dependent Claim
28 words
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.
Claim 19
Dependent Claim
11 words
An elastomeric body comprising a cross-linked polyurethane according to claim 1.
Claim 20
Dependent Claim
11 words
A foamed elastomer body comprising a polyurethane according to claim 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) | 1986-08-15 | 1987-02-14 | 1987-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-15 | 1991-02-14 | 1991-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-15 | 1995-02-14 | 1995-08-16 | $7700.00 | Window Closed / Lapsed |