US4415469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase stable compositions containing a paraffinic polyol and an isocyanate reactive prepolymer
Assignee: Stauffer Chemical Co
•
Filing: 1981-11-02
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Granted: 1983-11-15
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Expires: 2001-11-02
Abstract
Abstract Phase stable compositions containing a paraffinic polyol chain extender, e.g., 1,4-butanediol, and an isocyanate-reactive prepolymer containing hydroxy and epoxy groups are formed by heating the polyol and prepolymer in the presence of one another to yield the phase stable composition. The composition, when reacted with a polyisocyanate, yields poly(oxazolidone/urethane) thermoset compositions.
Inventors
- 👤 Chung-Chieh Tsai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:45
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/58; C08G18/581; C08G18/65; C08G18/6505; C08G18/6511; C08G2130/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31598; Y10T428/31601
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
43 words
A process for producing a phase-stable solution composition comprising an isocyanate reactive prepolymer containing hydroxy and epoxy groups and a paraffinic polyol chain extender which comprises heating the prepolymer and polyol in the presence of one another to yield said phase-stable solution composition.
Claim 2
Dependent Claim
43 words
A process for producing a phase-stable solution composition comprising an isocyanate reactive prepolymer containing hydroxy and epoxy groups and a paraffinic polyol chain extender which comprises heating the prepolymer and polyol in the presence of one another to yield said phase-stable solution composition.
Claim 3
Dependent Claim
26 words
A process as claimed in claim 1 wherein the polyol is selected from the group consisting of the butanediols, the hexanediols, the octanediols and ethylene glycol.
Claim 4
Dependent Claim
24 words
A process as claimed in claim 1 wherein the polyol is present at from about 5% to about 40%, by weight of the composition.
Claim 5
Dependent Claim
12 words
A process as claimed in claim 1 wherein the polyol is 1,4-butanediol.
Claim 6
Dependent Claim
27 words
A process as claimed in claim 1 wherein the polyol is 1,4-butanediol and it is present at about 5% to about 40%, by weight of the composition.
Claim 7
Dependent Claim
41 words
A process as claimed in claim 1 wherein the prepolymer has the formula ##STR6## where R, R 1 and R 2 are independently alkylene, arylene, and alkylene-arylene and, for R and R 2 , also hydrogen, X being 1 or 2.
Claim 8
Dependent Claim
32 words
A process as claimed in claim 1 wherein the prepolymer has the formula ##STR7## where R 1 -R 2 are independently alkylene, arylene, and alkylenearylene and R is the same and hydrogen.
Claim 9
Dependent Claim
32 words
A process as claimed in claim 1 wherein the prepolymer has the formula ##STR8## where R 1 -R 3 are independently alkylene, arylene, and alkylene-arylene and R is the same and hydrogen.
Claim 10
Dependent Claim
24 words
A process as claimed in claim 1 wherein the prepolymer is present at from about 60% to about 95% by weight of the composition.
Claim 11
Dependent Claim
20 words
A process as claimed in claim 1 wherein the temperature of heating is from about 50° to about 160° C.
Claim 12
Dependent Claim
35 words
A phase stable solution composition comprising an isocyanate reactive prepolymer containing hydroxy and epoxy groups and a paraffinic polyol chain extender, said composition being essentially free of a compatibilizing agent for said prepolymer and polyol.
Claim 13
Dependent Claim
35 words
A phase stable solution composition comprising an isocyanate reactive prepolymer containing hydroxy and epoxy groups and a paraffinic polyol chain extender, said composition being essentially free of a compatibilizing agent for said prepolymer and polyol.
Claim 14
Dependent Claim
26 words
A composition as claimed in claim 11 wherein the polyol is selected from the group consisting of the butanediols, the hexanediols, the octanediols and ethylene glycol.
Claim 15
Dependent Claim
24 words
A composition as claimed in claim 11 wherein the polyol is present at from about 5% to about 40% by weight of the composition.
Claim 16
Dependent Claim
12 words
A composition as claimed in claim 11 wherein the polyol is 1,4-butanediol.
Claim 17
Dependent Claim
26 words
A composition as claimed in claim 11 wherein the polyol is 1,4-butanediol, and is present at about 5% to about 40%, by weight of the composition.
Claim 18
Dependent Claim
41 words
A composition as claimed in claim 11 wherein the prepolymer has the formula ##STR9## where R, R 1 and R 2 are independently alkylene, arylene, and alkylene-arylene and, for R and R 2 , also hydrogen, X being 1 or 2.
Claim 19
Dependent Claim
25 words
A composition as claimed in claim 11 wherein the prepolymer has the formula ##STR10## where R 1 -R 5 are independently alkylene, arylene, and alkylene-arylene.
Claim 20
Dependent Claim
32 words
A composition as claimed in claim 11 where the prepolymer has the formula ##STR11## where R 1 -R 3 are independently alkylene, arylene, and alkylene-arylene and R is the same and hydrogen.
Claim 21
Dependent Claim
24 words
A composition as claimed in claim 11 wherein the prepolymer is present at from about 60 to about 95% by weight of the composition.
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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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |