US4277532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally expandable sealants
Assignee: Patheon Austria GmbH and Co KG
•
Filing: 1979-08-27
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Granted: 1981-07-07
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Expires: 1999-08-27
Abstract
Abstract A thermally-expandable sealant for joints, cavities or holes, which foams in the event of a fire and thereby effects a seal, comprising as a carrier a fleece or fabric made of glass or plastic, which is coated with a composition based upon expandable graphite and containing, per 100 parts by weight of expandable graphite, 10 to 30 parts by weight of polychlorobutadiene, 1 to 40 parts by weight of an alkylphenol/formaldehyde resin and 1 to 3 parts by weight of stabilizers known per se, and optionally, up to 30 parts by weight of inorganic fibers and up to 80 parts by weight of aluminium hydroxide. A process for sealing joints, cavities or holes using the sealant is also disclosed.
Inventors
- 👤 Hubert Czepel
- 👤 Franz Jilek
- 👤 Heinz Zochbauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:41
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1025; C09K3/1028; C09K2003/1034; C09K2003/1037; C09K2200/00; C09K2200/02; C09K2200/0204; C09K2200/0208; C09K2200/0239; C09K2200/0278; C09K2200/0286; C09K2200/0291; C09K2200/06; C09K2200/0615; C09K2200/0635; C09K2200/0645; C09K2200/067; C09K2200/0672; Y; Y10; Y10S; Y10S277/00; Y10S277/931; Y10S277/935; Y10S277/936; Y10S277/937; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249954; Y10T428/249971; Y10T428/249973; Y10T428/249986; Y10T428/249987; Y10T428/24999; Y10T428/249991; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/30; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/31645; Y10T428/31649; Y10T428/31652; Y10T428/31855; Y10T428/31935; Y10T428/31942; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2746
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
A thermally expandable sealant having good flow and creep for the sealing of joints, cavities or holes, which comprises as a carrier a fleece or fabric, made of glass or plastics material, which is coated with a composition based upon expandable graphite and containing, per 100 parts by weight of expandable graphite, 10 to 30 parts by weight of polychlorobutadiene, 1 to 40 parts by weight of an alkylphenol/formaldehyde resin and 1 to 3 parts by weight of stabilizers known per se.
Claim 2
Dependent Claim
82 words
A thermally expandable sealant having good flow and creep for the sealing of joints, cavities or holes, which comprises as a carrier a fleece or fabric, made of glass or plastics material, which is coated with a composition based upon expandable graphite and containing, per 100 parts by weight of expandable graphite, 10 to 30 parts by weight of polychlorobutadiene, 1 to 40 parts by weight of an alkylphenol/formaldehyde resin and 1 to 3 parts by weight of stabilizers known per se.
Claim 3
Dependent Claim
24 words
A sealant according to claim 1, in which the amount of the composition coated on the carrier is 500 to 2,500 g.m. 2 .
Claim 4
Dependent Claim
64 words
A process for sealing joints, cavities or holes in doors, windows or walls of building structures in the event of a fire, which comprises applying to the joint, cavity or hole to be sealed an appropriate amount of a sealant according to claim 1, and affixing the sealant to the joint, cavity or hole by inserting it therein or bonding it thereto with glue.
Claim 5
Dependent Claim
22 words
A sealant according to claim 1 in which the coating composition additionally includes up to 30 parts by weight of inorganic fibers.
Claim 6
Dependent Claim
22 words
A sealant according to claim 1 in which the coating composition additionally includes up to 80 parts by weight of aluminum hydroxide.
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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) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |