Patent US4292353A successfully refreshed from Google Patents.
US4292353A
Expired / Lapsed
US
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Urethane modified polyisocyanurate foam surfaced with aluminum foil or sheet
Assignee: Bridgestone Corp
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Filing: 1978-11-13
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Granted: 1981-09-29
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Expires: 1998-11-13
Abstract
Abstract A laminate having excellent flameproofing and low-smoke development is disclosed. The laminate comprises an urethane modified polyisocyanurate foam as a core material and an aluminum foil or sheet as a surface material piled on at least one surface of the foam through a self-adhesion of the foam and passes Grade 2 incombustibility according to Japanese Industrial Standard (JIS) A-1321 combustion test.
Inventors
- 👤 Takashi Ohashi
- 👤 Toru Okuyama
- 👤 Akira Suzuki
- 👤 Katsuhiko Arai
- 👤 Minoru Kojima
- 👤 Yoshiko Taniguchi
- 👤 Masako Yoshida
- 👤 Ryozo Sakata
- 👤 Hideki Sugihara
- 👤 Masashi Dobashi
- 👤 Hirobumi Ohwada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:36
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/046; B32B15/20; B32B5/00; B32B5/18; B32B5/20; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24934; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984; Y10T428/249987; Y10T428/24999; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31547; Y10T428/31678; Y10T428/31703
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
287 words
A laminate consisting essentially of (1) an urethane modified polyisocyanurate foam as a single core material and (2) a surface material piled on one or both surfaces of the foam, wherein (a) said surface material is an aluminum foil or sheet having a thickness of not less than 0.1 mm, said surface material being piled on said core material through a self-adhesion of said foam; (b) said core material is formed by reacting an organic polyisocyanate with a polyol wherein said polyol is a compound having two or more hydroxyl groups at its terminal, and wherein said polyol is selected from the group consisting of the addition product of a polyhydric alcohol with an alkylene oxide, the addition product of an alkanol amine with an alkylene oxide, the addition product of a polyamine with an alkylene oxide, the addition product of phosphoric acid with an alkylene oxide, the addition product of a phenol with an alkylene oxide, the addition product of an intermediate having a phenolic hydroxyl group with an alkylene oxide, a mixture of a polyhydric alcohol and a polyether polyol, and any combination of the above polyols, and wherein said polyol has a hydroxyl equivalent of 200 to 2,000 in an amount of 0.05 to 0.13 equivalent of said polyol to said organic polyisocyanate in the presence of (1) an isocyanate trimerization catalyst selected from the group consisting of an alkali metal salt of a carboxylic acid having a carbon number of 2-12 and a combination of a tertiary amino compound and said alkali metal salt; (2) a blowing agent; and, optionally (3) a foam stabilizer or (4) other additives; (c) said laminate passes Grade 2 incombustibility (quasi-incombustible material) according to JIS A-1321 combustion test.
Claim 2
Dependent Claim
287 words
A laminate consisting essentially of (1) an urethane modified polyisocyanurate foam as a single core material and (2) a surface material piled on one or both surfaces of the foam, wherein (a) said surface material is an aluminum foil or sheet having a thickness of not less than 0.1 mm, said surface material being piled on said core material through a self-adhesion of said foam; (b) said core material is formed by reacting an organic polyisocyanate with a polyol wherein said polyol is a compound having two or more hydroxyl groups at its terminal, and wherein said polyol is selected from the group consisting of the addition product of a polyhydric alcohol with an alkylene oxide, the addition product of an alkanol amine with an alkylene oxide, the addition product of a polyamine with an alkylene oxide, the addition product of phosphoric acid with an alkylene oxide, the addition product of a phenol with an alkylene oxide, the addition product of an intermediate having a phenolic hydroxyl group with an alkylene oxide, a mixture of a polyhydric alcohol and a polyether polyol, and any combination of the above polyols, and wherein said polyol has a hydroxyl equivalent of 200 to 2,000 in an amount of 0.05 to 0.13 equivalent of said polyol to said organic polyisocyanate in the presence of (1) an isocyanate trimerization catalyst selected from the group consisting of an alkali metal salt of a carboxylic acid having a carbon number of 2-12 and a combination of a tertiary amino compound and said alkali metal salt; (2) a blowing agent; and, optionally (3) a foam stabilizer or (4) other additives; (c) said laminate passes Grade 2 incombustibility (quasi-incombustible material) according to JIS A-1321 combustion test.
Claim 3
Dependent Claim
15 words
A laminate as claimed in claim 1, wherein the organic polyisocyanate is an aromatic polyisocyanate.
Claim 4
Dependent Claim
35 words
A laminate as claimed in claim 1, wherein the organic polyisocyanate is a mixture of polymethylene polyphenyl isocyanates having the following formula ##STR2## wherein n is zero or an integer of not less than 1.
Claim 5
Dependent Claim
14 words
A laminate as claimed in claim 1, wherein the polyol is a polyether polyol.
Claim 6
Dependent Claim
26 words
A laminate as claimed in claim 4, wherein the polyether polyol is an addition product of a compound having an active hydrogen with an alkylene oxide.
Claim 7
Dependent Claim
46 words
A laminate as claimed in claim 5, wherein the compound having an active hydrogen is selected from the group consisting of ethylene glycol, glycerine, trimethylol propane, pentaerythritol, hexane triol, methyl glucoside, sorbitol, sucrose, diethanol amine, triethanol amine, diethylene triamine, tolylene diamine, phosphoric acid and bisphenol A.
Claim 8
Dependent Claim
17 words
A laminate as claimed in claim 5, wherein the alkylene oxide is ethylene oxide or propylene oxide.
Claim 9
Dependent Claim
32 words
A laminate as claimed in claim 1, wherein the alkali metal salt of carboxylic acid is selected from potassium acetate, potassium propionate, potassium caprylate, potassium 2-ethyl hexanoate, potassium adipate and sodium benzoate.
Claim 10
Dependent Claim
28 words
A laminate as claimed in claim 1, wherein the tertiary amino compound is selected from N,N', N"-tris(dialkylaminoalkyl)-sym-hexahydrotriazine, 2,4,6-tris(dimethylaminomethyl) phenol, 1,8-diaza-bicyclo(5,4,0)-undecene-7, triethylamine, dimethyl ethanolamine, tetramethyl ethylenediamine and triethylene diamine.
Claim 11
Dependent Claim
27 words
A laminate as claimed in claim 1, wherein the isocyanate trimerization catalyst is used in an amount of 0.5 to 10% by weight per the organic polyisocyanate.
Claim 12
Dependent Claim
16 words
A laminate as claimed in claim 1, wherein the blowing agent is a low-boiling inert solvent.
Claim 13
Dependent Claim
13 words
A laminate as claimed in claim 1, wherein the blowing agent is trichloromonofluoromethane.
Claim 14
Dependent Claim
28 words
A laminate as claimed in claim 1, wherein the aluminum foil or sheet is subjected to an anodic oxidation, a coating or a sticking of printed decorative paper.
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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) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |