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Patent US4075151A successfully refreshed from Google Patents.
US4075151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid, rapid-setting, rigid polyurethanes
Assignee: Dow Chemical Co
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Filing: 1976-05-27
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Granted: 1978-02-21
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Expires: 1996-05-27
Abstract
Abstract Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compound having a boiling point above about 150° C such as a non-hydroxyl-containing polyoxy-alkylene compound.
Inventors
- 👤 Franciszek Olstowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:10
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08L75/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
157 words
A rigid, non-cellular, solid composition having a density of at least 1 g/cc, a percent elongation of less than 100 and which is demoldable within about 5 minutes, without the application of an external source of heat, after admixture of the components of a rapid-setting polyurethane-forming composition, free of catalytic quantities of a catalyst for urethane formation, and comprising A. an amine initiated polyol having an OH equivalent weight of from about 50 to less than about 250; B. an organic aromatic polyisocyanate; C. a liquid modifier compound having a boiling point above about 150° C selected from the group consisting of non-ester-containing non-hydroxyl-containing polyoxyalkylene compounds and mixtures thereof; and wherein components (A) and (B) are present in quantities such that the NCO:OH ratio is from about 0.8:1 to about 1.5:1 and component (C) is employed in quantities of from about 5% to about 60% by weight of the combined weight of components (A), (B) and (C).
Claim 2
Dependent Claim
157 words
A rigid, non-cellular, solid composition having a density of at least 1 g/cc, a percent elongation of less than 100 and which is demoldable within about 5 minutes, without the application of an external source of heat, after admixture of the components of a rapid-setting polyurethane-forming composition, free of catalytic quantities of a catalyst for urethane formation, and comprising A. an amine initiated polyol having an OH equivalent weight of from about 50 to less than about 250; B. an organic aromatic polyisocyanate; C. a liquid modifier compound having a boiling point above about 150° C selected from the group consisting of non-ester-containing non-hydroxyl-containing polyoxyalkylene compounds and mixtures thereof; and wherein components (A) and (B) are present in quantities such that the NCO:OH ratio is from about 0.8:1 to about 1.5:1 and component (C) is employed in quantities of from about 5% to about 60% by weight of the combined weight of components (A), (B) and (C).
Claim 3
Dependent Claim
69 words
The polyurethane composition of claim 1 wherein components (A) and (B) are present in quantities such that the NCO:OH ratio is from about 0.90:1 to about 1.2:1 and component (C) is present in quantities of from about 15% to about 40% by weight of the combined weight of components (A), (B) and (C) and wherein component (A) has an OH equivalent weight of from about 50 to about 200.
Claim 4
Dependent Claim
27 words
The polyurethane composition of claim 2 wherein components (A) and (B) are present in quantities such that the NCO:OH ratio is from about 0.95:1 to about 1.05:1.
Claim 5
Dependent Claim
43 words
The composition of claim 3 wherein component (C) is an adduct of a 1-6 carbon atom alcohol and a vicinal 2 to 4 carbon atom alkylene oxide or mixtures of such oxides said adduct being capped with a 1-3 carbon atom hydrocarbon group.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein said alcohol is selected from butanol and allyl alcohol.
Claim 7
Dependent Claim
31 words
The composition of claim 3 wherein component (A) is selected from the group consisting of triethanolamine, an adduct of diethylenetriamine with propylene oxide and an adduct of aminoethylethanolamine with propylene oxide.
Claim 8
Dependent Claim
21 words
The composition of claim 3 wherein component (B) is selected from the group consisting of 2,4-toluenediisocyanate, 2,6-toluenediisocyanate, diphenylmethanediisocyanate and mixtures thereof.
Claim 9
Dependent Claim
10 words
The composition of claim 1 cast as a decorative object.
Claim 10
Dependent Claim
10 words
The composition of claim 1 cast as a furniture component.
Claim 11
Dependent Claim
10 words
The composition of claim 1 cast as a machine component.
Claim 12
Dependent Claim
38 words
The composition of claim 1 wherein Component (A) additionally contains a non-amine initiated polyol having an equivalent weight of less than 200 and the weight ratio of non-amine initiated polyol to amine initiated polyol is less than 2:1.
Claim 13
Dependent Claim
21 words
The composition of claim 11 wherein the weight ratio of non-amine initiated polyol to amine initiated polyol is less than 1:1.
References Cited (Backward Citations)
US2448664A
Cited
US2425755A
Cited
US2520611A
Cited
US2782240A
Cited
US3049514A
Cited
US3105063A
Cited
US3297597A
Cited
US3378511A
Cited
US3502601A
Cited
US3746692A
Cited
US3726827A
Cited
US3892705A
Cited
US3956221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |