Patent US4190547A successfully refreshed from Google Patents.
US4190547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-flammable insulating material
Assignee: BASF SE
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Filing: 1978-05-25
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Granted: 1980-02-26
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Expires: 1998-05-25
Abstract
Abstract Non-flammable insulating materials having good fire resistance and a density of from 80 to 230 g/l, which materials comprise A. from 99 to 80% by weight of inorganic lightweight particles, preferably expanded perlite or vermiculite, B. from 0 to 20% by weight of fibrous or granular inorganic additives and C. from 1 to 20% by weight of a heat-resistant organic high molecular weight binder, preferably a phenol-formaldehyde condensate, and which contain, as an additional binder C' to prevent water absorption, from 0.2 to 4% by weight of an alkylphenol/phenyl/formaldehyde condensate. The materials may be used as heat insulating materials or building materials.
Inventors
- 👤 Harald Mahnke
- 👤 Juergen Nieberle
- 👤 Volker Trautz
- 👤 Heinz Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:56
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/12; C04B26/122; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2982; Y10T428/2991; Y10T428/2998; Y10T428/31504; Y10T428/31652; Y10T428/31667; Y10T428/31942
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
134 words
Non-flammable insulating material having good fire resistance and a density of from 80 to 230 g/l, which material comprises (A) from 99 to 80% by weight of expanded perlite or vermiculite having a mean particle diameter of from 0.05 to 3 mm and a bulk density of from 30 to 150 g/l and (B) from 0 to 40% by weight of inorganic additives, selected from the group consisting of glass fibers, rockwool, mineral wool, talc and gypsum, the particles being bonded to one another by (C) from 1 to 20% by weight of a heat-resistant organic high molecular weight binder, selected from the group consisting of crosslinked melamine/formaldehyde and phenol/formaldehyde resins, wherein the insulating material contains, as an additional binder 0.2 to 4% by weight, based on the mixture, of an alkylphenol/phenol/formaldehyde condensate C'.
Claim 2
Dependent Claim
134 words
Non-flammable insulating material having good fire resistance and a density of from 80 to 230 g/l, which material comprises (A) from 99 to 80% by weight of expanded perlite or vermiculite having a mean particle diameter of from 0.05 to 3 mm and a bulk density of from 30 to 150 g/l and (B) from 0 to 40% by weight of inorganic additives, selected from the group consisting of glass fibers, rockwool, mineral wool, talc and gypsum, the particles being bonded to one another by (C) from 1 to 20% by weight of a heat-resistant organic high molecular weight binder, selected from the group consisting of crosslinked melamine/formaldehyde and phenol/formaldehyde resins, wherein the insulating material contains, as an additional binder 0.2 to 4% by weight, based on the mixture, of an alkylphenol/phenol/formaldehyde condensate C'.
Claim 3
Dependent Claim
24 words
A non-flammable insulating material as claimed in claim 1, wherein, in the alkylphenol of binder C', alkyl is of 2 to 12 carbon atoms.
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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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |