US4745136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes prepared from dispersions or solutions of cholesterol or cholestanol-containing polymers in a polyol
Assignee: Dow Chemical Co
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Filing: 1987-07-14
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Granted: 1988-05-17
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Expires: 2007-07-14
Abstract
Abstract A solution or colloidal dispersion of a polymer of an ethylenically unsaturated steroid derivative in an active hydrogen-containing compound is claimed. The polymer provides improved physical properties to a polyurethane made by reacting the solution or dispersion with an polyisocyanate.
Inventors
- 👤 Oomman P. Thomas
- 👤 Robert B. Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:46
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/63; C08G18/635; C08G18/638; C08L; C08L75/00; C08G2110/00; C08G2110/0008; C08G2110/0025; C08G2250/00; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
30 words
A solution or colloidal dispersion of a polymer of an ethylenically unsaturated steroid derivative in an active hydrogen-containing compound having an average of at least two isocyanate-reactive groups per molecule.
Claim 2
Dependent Claim
30 words
A solution or colloidal dispersion of a polymer of an ethylenically unsaturated steroid derivative in an active hydrogen-containing compound having an average of at least two isocyanate-reactive groups per molecule.
Claim 3
Dependent Claim
27 words
The solution or colloidal dispersion of claim 1 wherein said ethylenically unsaturated steroid derivative is a derivative of cholesterol, cholestanol, doristerol, campesterol, β-sitosterol, stigmatserol, ergosterol or cycloartenol.
Claim 4
Dependent Claim
40 words
The solution or colloidal dispersion of claim 2 wherein the active hydrogen-containing compound comprises a polyether polyol or amine-terminated polyether having a nominal functionality from about 2 to about 4 and an equivalent weight from about 800 to about 3000.
Claim 5
Dependent Claim
26 words
The solution or colloidal dispersion of claim 3 wherein said polymer of an ethylenically unsaturated steroid derivative is soluble in said polyether polyol or amine-terminated polyether.
Claim 6
Dependent Claim
15 words
The solution of claim 4 wherein said ethylenically unsaturated steroid derivative is a cholesterol derivative.
Claim 7
Dependent Claim
32 words
The solution of claim 5 wherein about 1 to about 10 parts of said polymer of an ethylenically unsaturated steroid derivative are present per 100 parts by weight of active hydrogen-containing compound.
Claim 8
Dependent Claim
26 words
The solution or colloidal dispersion of claim 3 wherein said polymer of an ethylenically unsaturated steroid derivative is dispersed in said polyether polyol or amine-terminated polyether.
Claim 9
Dependent Claim
16 words
The colloidal dispersion of claim 7 wherein said ethylenically unsaturated steroid derivative is a cholesterol derivative.
Claim 10
Dependent Claim
33 words
The colloidal dispersion of claim 8 wherein about 3 to about 60 parts of said polymer of an ethylenically unsaturated steroid derivative are present per 100 parts by weight of active hydrogen-containing compound.
Claim 11
Dependent Claim
13 words
The solution or colloidal dispersion of claim 3, further comprising a blowing agent.
Claim 12
Dependent Claim
20 words
The solution or colloidal dispersion of claim 10, further comprising a silicone surfactant and an organometallic or tertiary amine catalyst.
Claim 13
Dependent Claim
33 words
The solution or colloidal dispersion of claim 2 wherein the active hydrogen-containing compound has a nominal functionality from about 2 to about 16 and an equivalent weight from about 31 to about 1000.
Claim 14
Dependent Claim
23 words
The solution or colloidal dispersion of claim 12, further comprising a blowing agent, a silicone surfactant and an organometallic or tertiary amine catalyst.
Claim 15
Dependent Claim
18 words
A polyurethane and/or polyurea polymer prepared by reacting the solution or dispersion of claim 1 with a polyisocyanate.
Claim 16
Dependent Claim
18 words
A polyurethane and/or polyurea polymer prepared by reacting the solution or dispersion of claim 3 with a polyisocyanate.
Claim 17
Dependent Claim
18 words
A polyurethane and/or polyurea polymer prepared by reacting the solution or dispersion of claim 6 with a polyisocyanate.
Claim 18
Dependent Claim
18 words
A polyurethane and/or polyurea polymer prepared by reacting the solution or dispersion of claim 9 with a polyisocyanate.
Claim 19
Dependent Claim
18 words
A polyurethane and/or polyurea polymer prepared by reacting the solution or dispersion of claim 11 with a polyisocyanate.
Claim 20
Dependent Claim
18 words
A polyurethane and/or polyurea polymer prepared by reacting the solution or dispersion of claim 13 with a polyisocyanate.
Claim 21
Dependent Claim
14 words
A polyurethane and/or polyurea foam containing a polymer of an ethylenically unsaturated steroid derivative.
Claim 22
Dependent Claim
14 words
A polyurethane and/or polyurea foam containing a polymer of an ethylenically unsaturated steroid derivative.
Claim 23
Dependent Claim
10 words
The foam of claim 20 which is a flexible foam.
Claim 24
Dependent Claim
18 words
The foam of claim 21 wherein said polymer is a polymer of an ethylenically unsaturated derivative of cholesterol.
Claim 25
Dependent Claim
18 words
A crosslinked, non-cellular or microcellular polyurethane and/or polyurea polymer containing a polymer of an ethylenically unsaturated steroid derivative.
Claim 26
Dependent Claim
18 words
A crosslinked, non-cellular or microcellular polyurethane and/or polyurea polymer containing a polymer of an ethylenically unsaturated steroid derivative.
Claim 27
Dependent Claim
15 words
The polyurethane and/or polyurea polymer of claim 23 wherein said ethylenically unsaturated steroid is cholesterol.
References Cited (Backward Citations)
US3872050A
Cited
JPS56152830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |