Patent US4077920A successfully refreshed from Google Patents.
US4077920A
Expired / Lapsed
US
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Flame- and smoke-resistant polyurethane foam and a method for producing said foam
Assignee: Bridgestone Corp
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Filing: 1976-05-17
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Granted: 1978-03-07
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Expires: 1996-05-17
Abstract
Abstract An excellent flame- and smoke-resistant polyurethane foam is produced by reacting a polyol, a polyisocyanate and an amine-carbamate of primary or secondary amine having hydroxyl group in the presence of a catalyst and a surfactant.
Inventors
- 👤 Toshio Yukuta
- 👤 Takashi Ohashi
- 👤 Katsuhiko Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:16
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6603; C08G18/6614; C08G18/6622; C08G18/30; C08G18/32; C08G18/3271; C08G18/3296; C08G2110/00; C08G2110/0008; C08G2110/0016; C08G2110/0025; C08G2110/0041; C08G2110/005; C08G2110/0058; Y; Y10; Y10S; Y10S521/00; Y10S521/903
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
48 words
A flame- and smoke-resistant polyurethane foam obtained by reacting a polyol, a polyisocyanate and 3-40 parts by weight, based on 100 parts by weight of the polyol, of an amine-carbamate of primary or secondary amine having alcoholic hydroxyl group in the presence of a catalyst and a surfactant.
Claim 2
Dependent Claim
48 words
A flame- and smoke-resistant polyurethane foam obtained by reacting a polyol, a polyisocyanate and 3-40 parts by weight, based on 100 parts by weight of the polyol, of an amine-carbamate of primary or secondary amine having alcoholic hydroxyl group in the presence of a catalyst and a surfactant.
Claim 3
Dependent Claim
24 words
The polyurethane foam of claim 1, wherein the polyol has a number average molecular weight of 200-6,000 and a hydroxyl value of 20-900 mgKOH/g.
Claim 4
Dependent Claim
24 words
The polyurethane foam of claim 1, wherein the polyol has a number average molecular weight of 1,000-6,000 and a hydroxyl value of 20-170 mgKOH/g.
Claim 5
Dependent Claim
23 words
The polyurethane foam of claim 1, wherein the polyol is at least one polyol selected from polyether polyols, polyester polyols and polyetherester polyols.
Claim 6
Dependent Claim
12 words
The polyurethane foam of claim 1, wherein the polyol is poly(oxyalkylene) polyol.
Claim 7
Dependent Claim
17 words
The polyurethane foam of claim 1, wherein the polyisocyanate is used in an isocyanate index of 70-130.
Claim 8
Dependent Claim
30 words
The polyurethane foam of claim 1, wherein the polyisocyanate is at least one polyisocyanate selected from tolylene diisocyanate, diphenylmethane diisocyanate, diphenyl diisocyanate, chlorophenyl-2,4-diisocyanate, p-phenylene diisocyanate, xylylene diisocyanate and polymethylene-polyphenyl isocyanate.
Claim 9
Dependent Claim
12 words
The polyurethane foam of claim 1, wherein the polyisocyanate is tolylene diisocyanate.
Claim 10
Dependent Claim
30 words
The polyurethane foam of claim 1, wherein the amine-carbamate of primary or secondary amine having an alcoholic hydroxyl group is an amine-carbamate of a monoamine having an alcoholic hydroxyl group.
Claim 11
Dependent Claim
29 words
The polyurethane foam of claim 1, wherein the amine having an alcoholic hydroxyl group is at least one member selected from monoethanolamine, monoisopropanolamine, mono-n-propanolamine, mono-n-butanolamine, diethanolamine, diisopropanolamine, and di-n-propanolamine.
Claim 12
Dependent Claim
18 words
The polyurethane foam of claim 1, wherein the amount of the amine-carbamate used is 5-30 parts by weight.
Claim 13
Dependent Claim
21 words
The polyurethane foam of claim 1, wherein the catalyst is at least one compound selected from stannous octoate and dibutyltin dilaurate.
Claim 14
Dependent Claim
23 words
The polyurethane foam of claim 1, wherein the surfactant is at least one silicone surfactant selected from polydialkylsiloxanes and polysiloxane-polyalkylene oxide block copolymers.
Claim 15
Dependent Claim
64 words
A flame- and smoke-resistant polyurethane foam obtained by reacting (a) poly(oxypropylene) triol, (b) tolylene diisocyanate used in an isocyanate index of 95-110, and (c) an amine-carbamate of an amine having an alcoholic hydroxyl group, the amount of the amine-carbamate (c) being 10-30 parts by weight based on 100 parts by weight of poly(oxypropylene) triol (a), in the presence of a catalyst and a surfactant.
Claim 16
Dependent Claim
64 words
A flame- and smoke-resistant polyurethane foam obtained by reacting (a) poly(oxypropylene) triol, (b) tolylene diisocyanate used in an isocyanate index of 95-110, and (c) an amine-carbamate of an amine having an alcoholic hydroxyl group, the amount of the amine-carbamate (c) being 10-30 parts by weight based on 100 parts by weight of poly(oxypropylene) triol (a), in the presence of a catalyst and a surfactant.
Claim 17
Independent Claim
58 words
A method for producing flame- and smoke-resistant polyurethane foams, which comprises dissolving a primary or secondary amine having alcoholic hydroxyl group in a polyol, blowing carbon dioxide gas into the solution to form an amine-carbamate, and reacting the resulting mixture of the polyol and the amine-carbamate with a polyisocyanate in the presence of a catalyst and a surfactant.
Claim 18
Independent Claim
58 words
A method for producing flame- and smoke-resistant polyurethane foams, which comprises dissolving a primary or secondary amine having alcoholic hydroxyl group in a polyol, blowing carbon dioxide gas into the solution to form an amine-carbamate, and reacting the resulting mixture of the polyol and the amine-carbamate with a polyisocyanate in the presence of a catalyst and a surfactant.
Claim 19
Dependent Claim
14 words
The polyurethane foam of claim 1, wherein the amine-carbamate functions as a blowing agent.
Claim 20
Dependent Claim
14 words
The polyurethane foam of claim 14, wherein the amine-carbamate functions as a blowing agent.
Claim 21
Dependent Claim
13 words
The method of claim 15, wherein the amine-carbamate functions as a blowing agent.
Claim 22
Dependent Claim
30 words
The polyurethane foam of claim 1, wherein the polyurethane foam is obtained by reacting a system consisting essentially of the polyol, the polyisocyanate, the amine-carbamate, the catalyst and the surfactant.
Claim 23
Dependent Claim
28 words
The polyurethane foam of claim 14, wherein the polyurethane foam is obtained by reacting a system consisting essentially of components (a), (b), (c), the catalyst and the surfactant.
Claim 24
Dependent Claim
23 words
The method of claim 15, wherein the resulting mixture consists essentially of the polyol, the amine-carbamate, the polyisocyanate, the catalyst and the surfactant.
Claim 25
Dependent Claim
30 words
The polyurethane foam of claim 1, wherein the amine-carbamate is obtained by blowing carbon dioxide gas at room temperature into a previously prepared solution of the amine in the polyol.
Claim 26
Dependent Claim
30 words
The polyurethane foam of claim 14, wherein the amine-carbamate is obtained by blowing carbon dioxide gas at room temperature into a previously prepared solution of the amine in the polyol.
Claim 27
Dependent Claim
17 words
The method of claim 15, wherein the blowing of the carbon dioxide gas is at room temperature.
Claim 28
Dependent Claim
35 words
The polyurethane foam of claim 1, wherein during said reacting the amine-carbamate is decomposed due to the reaction of the hydroxyl group thereof with isocyanate groups on the polyisocyanate, whereafter foaming and curing reactions proceed.
Claim 29
Dependent Claim
35 words
The polyurethane foam of claim 14, wherein during said reacting the amine-carbamate is decomposed due to the reaction of the hydroxyl group thereof with isocyanate groups on the polyisocyanate, whereafter foaming and curing reactions proceed.
Claim 30
Dependent Claim
34 words
The method of claim 15, wherein during said reacting the amine-carbamate is decomposed due to the reaction of the hydroxyl group thereof with isocyanate groups on the polyisocyanate, whereafter foaming and curing reactions proceed.
Claim 31
Dependent Claim
12 words
The polyurethane foam of claim 9, wherein said amine is a monoamine.
Claim 32
Dependent Claim
20 words
The polyurethane foam of claim 14, wherein said amine having an alcoholic hydroxyl group is a primary or secondary amine.
Claim 33
Dependent Claim
12 words
The polyurethane foam of claim 29, wherein said amine is a monoamine.
Claim 34
Dependent Claim
11 words
The method of claim 15, wherein said amine is a monoamine.
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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) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |