Patent US4016111A successfully refreshed from Google Patents.
US4016111A
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Non-burning, class 1 rating, foams and a method of producing same
Assignee: Greif International Holding BV
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Filing: 1975-04-01
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Granted: 1977-04-05
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Expires: 1995-04-01
Abstract
Abstract Method of preparing foamed solid aminoformaldehyde furfurylalcohol products by polymerizing a liquid furfurylalcohol containing aminoformaldehyde resin composition in the presence of an acid, characterized in using as a starting material a resin compositioncontaining 15-90% by weight of total free and bound furfurylalcohol and having an urea:formaldehyde molar ratio of 1:1 to 1:5 and at least 10 parts by weight of a boron compound per 100 parts by weight of said resin, the boron compound being present in an amount sufficient so that the foam product will pass the muffle furnace test at 500° C., and has no second exotherm at 200° C. The boron compound can be selected from the group consisting of boric acid, boron oxide, borax, boric acid esters, boron tribromide, boron trichloride, boron nitride, boron phosphate, boron trifluoride etherate, boron trifluoride methanol, boron trifloride monoethylamine, complexes of boric acid with polyhydroxyl compounds, and mixtures thereof.
Inventors
- 👤 Per Lind Wolff
- 👤 John Arthur Gooch Gent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:47
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0066; C08G; C08G16/00; C08G16/02; C08G16/025; C08G16/0256; C08G16/0262; C08J9/0014; C08J9/0047; C08K; C08K3/00; C08K3/38; C08K5/00; C08K5/55; G; G01; G01N; G01N25/00; G01N25/50; C08J2361/00; C08J2361/34; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S521/00; Y10S521/903
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
A method of preparing foamed solid aminoformaldehyde furfurylalcohol products by polymerizing a liquid furfurylalcohol containing aminoformaldehyde resin composition in the presence of an acid, characterized in using as a starting material a resin composition containing 15-90% by weight of total free and bound furfurylalcohol and having an urea: formaldehyde molar ratio of 1:1 to 1:5 and at least 10 parts by weight of a boron compound per 100 parts by weight of said resin, the boron compound being present in an amount sufficient so that the foam product will pass the muffle furnace test at 500° C., and has no second exotherm at 200° C., said boron compound being selected from the group consisting of boric acid, boron oxide, borax, boric acid esters, boron tribromide, boron trichloride, boron nitride, boron phosphate, boron trifluoride etherate, boron trifluoride methanol, boron trifluoride monoethylamine, complexes of boric acid with polyhydroxyl compounds, and mixtures thereof.
Claim 2
Independent Claim
150 words
A method of preparing foamed solid aminoformaldehyde furfurylalcohol products by polymerizing a liquid furfurylalcohol containing aminoformaldehyde resin composition in the presence of an acid, characterized in using as a starting material a resin composition containing 15-90% by weight of total free and bound furfurylalcohol and having an urea: formaldehyde molar ratio of 1:1 to 1:5 and at least 10 parts by weight of a boron compound per 100 parts by weight of said resin, the boron compound being present in an amount sufficient so that the foam product will pass the muffle furnace test at 500° C., and has no second exotherm at 200° C., said boron compound being selected from the group consisting of boric acid, boron oxide, borax, boric acid esters, boron tribromide, boron trichloride, boron nitride, boron phosphate, boron trifluoride etherate, boron trifluoride methanol, boron trifluoride monoethylamine, complexes of boric acid with polyhydroxyl compounds, and mixtures thereof.
Claim 3
Dependent Claim
28 words
A method according to claim 1, characterized in using a resin composition, which when foamed in absence of a boron compound, has no second exotherm at 200° C.
Claim 4
Dependent Claim
43 words
A method according to claim 1, characterized in using a resin composition, which when foamed in the presence of at least 10 parts by weight of a boron compound per 100 parts by weight of resin, has no second exotherm at 200° C.
Claim 5
Dependent Claim
34 words
A method according to claim 1, characterized in using a resin composition containing 25 to 70% by weight of total free and bound furfurylalcohol and a urea:formaldehyde molar ratio of from 1:1.5 to 1:4.
Claim 6
Dependent Claim
34 words
A method according to claim 1, characterized in using a resin composition containing 25 to 50% by weight of total free and bound furfurylalcohol and a urea:formaldehyde molar ratio of from 1:1.5 to 1:2.5.
Claim 7
Dependent Claim
34 words
A method according to claim 1, characterized in using a resin composition containing 30 to 40% by weight of total free and bound furfurylalcohol and a urea:formaldehyde molar ratio of from 1:1.7 to 1:2.1.
Claim 8
Dependent Claim
15 words
A method according to claim 1 characterized in using boric acid as the boron compound.
Claim 9
Dependent Claim
26 words
A method according to claim 1, characterized in using 10 to 60 parts by weight of a boron compound per 100 parts by weight of resin.
Claim 10
Dependent Claim
7 words
Foamed products, prepared according to claim 1.
References Cited (Backward Citations)
US3006871A
Cited
GB942845A
Cited
FR1432889A
Cited
GB1248756A
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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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |