US4292369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproof laminates
Assignee: Bridgestone Corp
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Filing: 1980-03-06
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Granted: 1981-09-29
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Expires: 2000-03-06
Abstract
Abstract A fireproof laminates passing Grade 2 incombustibility according to Japanese Industrial Standard (JIS) A-1321 combustion test is disclosed. The laminate comprises a urethane modified polyisocyanurate foam as a core material and a particular front surface material piled on the core material through self-adhesion of the foam.
Inventors
- 👤 Takashi Ohashi
- 👤 Toru Okuyama
- 👤 Katsuhiko Arai
- 👤 Hiroshi Kaneda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:40
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B32B15/14; B32B5/02; B32B5/024; B32B5/18; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2311/00; B32B2311/24; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984; Y10T428/249987; Y10T428/24999; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31547
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
223 words
A fireproof laminate comprising a urethane modified polyisocyanurate foam as a core material and a surface material piled on at least one side of the foam, which comprises: (1) an aluminum foil having a thickness of not less than 0.015 mm, as a surface material for said core material, said surface material being united with said core material by self-adhesion of said urethane modified polyisocyanurate foam; and (2) a matted or woven glass fiber interposed between said core material and said front surface material; said urethane modified polyisocyanurate foam being obtained by reacting an organic polyisocyanate with a polyol in the presence of an isocyanate trimerization catalyst, a blowing agent and other additives, provided that (1) said polyol being a combination of (a) a low molecular weight diol having a hydroxyl equivalent of not more than 100 selected from diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, 2,3-butane diol and 2-butene-1,4-diol and (b) at least one high molecular weight polyol having a hydroxyl equivalent of 600-2,000 and 2 to 4 hydroxyl groups in its molecule; (2) the weight ratio of said low molecular weight diol to said high molecular weight polyols being 0.55 to 7.0; and (3) said polyol being used in a total amount of 12.5 to 25 parts by weight per 100 parts by weight of said organic polyisocyanate.
Claim 2
Dependent Claim
223 words
A fireproof laminate comprising a urethane modified polyisocyanurate foam as a core material and a surface material piled on at least one side of the foam, which comprises: (1) an aluminum foil having a thickness of not less than 0.015 mm, as a surface material for said core material, said surface material being united with said core material by self-adhesion of said urethane modified polyisocyanurate foam; and (2) a matted or woven glass fiber interposed between said core material and said front surface material; said urethane modified polyisocyanurate foam being obtained by reacting an organic polyisocyanate with a polyol in the presence of an isocyanate trimerization catalyst, a blowing agent and other additives, provided that (1) said polyol being a combination of (a) a low molecular weight diol having a hydroxyl equivalent of not more than 100 selected from diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, 2,3-butane diol and 2-butene-1,4-diol and (b) at least one high molecular weight polyol having a hydroxyl equivalent of 600-2,000 and 2 to 4 hydroxyl groups in its molecule; (2) the weight ratio of said low molecular weight diol to said high molecular weight polyols being 0.55 to 7.0; and (3) said polyol being used in a total amount of 12.5 to 25 parts by weight per 100 parts by weight of said organic polyisocyanate.
Claim 3
Dependent Claim
224 words
A fireproof laminate comprising a urethane modified polyisocyanurate foam as a core material and a surface material piled on at least one side of the foam, which comprises, as the surface material for said core material, a three-layer assembly composed of aluminum foils with a thickness of less than 0.1 mm as upper and lower layers and a matted or woven glass fiber as a middle layer, said surface material being united with said core material through said lower layer by self-adhesion of said foam; said urethane modified polyisocyanurate foam being obtained by reacting an organic polyisocyanate with a polyol in the presence of an isocyanate trimerization catalyst, a blowing agent and other additives, provided that (1) said polyol being a combination of (a) a low molecular weight diol having a hydroxyl equivalent of not more than 100 selected from diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, 2,3-butane diol and 2-butene-1,4-diol and (b) at least one high molecular weight polyol having a hydroxyl equivalent of 600-2,000 and 2 to 4 hydroxyl groups in its molecule; (2) the weight ratio of said low molecular weight diol to said high molecular weight polyols being 0.55 to 7.0; and (3) said polyol being used in a total amount of 12.5 to 25 parts by weight per 100 parts by weight of said organic polyisocyanate.
Claim 4
Dependent Claim
224 words
A fireproof laminate comprising a urethane modified polyisocyanurate foam as a core material and a surface material piled on at least one side of the foam, which comprises, as the surface material for said core material, a three-layer assembly composed of aluminum foils with a thickness of less than 0.1 mm as upper and lower layers and a matted or woven glass fiber as a middle layer, said surface material being united with said core material through said lower layer by self-adhesion of said foam; said urethane modified polyisocyanurate foam being obtained by reacting an organic polyisocyanate with a polyol in the presence of an isocyanate trimerization catalyst, a blowing agent and other additives, provided that (1) said polyol being a combination of (a) a low molecular weight diol having a hydroxyl equivalent of not more than 100 selected from diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, 2,3-butane diol and 2-butene-1,4-diol and (b) at least one high molecular weight polyol having a hydroxyl equivalent of 600-2,000 and 2 to 4 hydroxyl groups in its molecule; (2) the weight ratio of said low molecular weight diol to said high molecular weight polyols being 0.55 to 7.0; and (3) said polyol being used in a total amount of 12.5 to 25 parts by weight per 100 parts by weight of said organic polyisocyanate.
Claim 5
Dependent Claim
18 words
A fireproof laminate as claimed in claim 1 or 2, wherein said organic polyisocyanate is an aromatic polyisocyanate.
Claim 6
Dependent Claim
36 words
A fireproof laminate as claimed in claim 1 or 2, wherein said organic polyisocyanate is a mixture of polymethylenepolyphenyl isocyanates having the following formula ##STR5## wherein n is 0 or an integer of 1 or more.
Claim 7
Dependent Claim
39 words
A fireproof laminate as claimed in claim 1 or 2, wherein said isocyanate trimerization catalyst is an alkali metal salt of a carboxylic acid having a carbon number of 2-12 alone or combination of a tertiary amino compound therewith.
Claim 8
Dependent Claim
26 words
A fireproof laminate as claimed in claim 1, wherein said aluminum foil to be used in said front surface material has a thickness of 0.015-0.2 mm.
Claim 9
Dependent Claim
24 words
A fireproof laminate as claimed in claim 1, wherein said matted or woven glass fiber has a thickness of not more than 2 mm.
Claim 10
Dependent Claim
22 words
A fireproof laminate as claimed in claim 2, wherein said aluminum foil as the upper layer has a thickness of 0.02-0.1 mm.
Claim 11
Dependent Claim
24 words
A fireproof laminate as claimed in claim 2, wherein said matted or woven glass fiber has a thickness of not more than 0.5 mm.
Claim 12
Dependent Claim
23 words
A fireproof laminate as claimed in claim 1 or 2, wherein said blowing agent is a low-boiling inert fluorinated and/or chlorinated organic compound.
Claim 13
Dependent Claim
16 words
A fireproof laminate as claimed in claim 1 or 2, wherein said blowing agent is trichloromonofluoromethane.
Claim 14
Dependent Claim
21 words
The fireproof laminate of claim 1 wherein said surface material consists essentially of said foil (1) and said glass fiber (2).
Claim 15
Dependent Claim
20 words
The fireproof laminate of claim 1 wherein said surface material consists of said foil (1) and said glass fiber (2).
Claim 16
Dependent Claim
16 words
The fireproof laminate of claim 1 wherein said laminate passes Grade 2 combustibility under JIS A-1321.
Claim 17
Dependent Claim
16 words
The fireproof laminate of claim 2 wherein said laminate passes Grade 2 combustibility under JIS A-1321.
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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 |