US4708977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant plastics material
Assignee: Phoenix Foam Inc
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Filing: 1987-03-06
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Granted: 1987-11-24
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Expires: 2007-03-06
Abstract
Abstract This invention relates to a plastics material with a resin binder having a combination of fusible fillers and high temperature fillers. The fusible fillers begin melting at relatively low temperatures and retain a spreaded liquidous form over a large temperature range. The high temperature fillers resist melting at high temperatures and form an insulative layer over the resin binder of the plastics cellular material.
Inventors
- 👤 Alexander Miutel
- 👤 Jerry P. Shira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:54
CPC Classifications
C; C08; C08K; C08K3/00; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
133 words
A plastics material with a resin binder, that includes co-polymerizable monomer and an epoxy based vinyl ester in its composition, having: a combination of fillers said combination of fillers including fusible fillers that begin melting at relatively low temperatures and retain a spread liquidous form over a large temperature range; said combination of fillers also including high temperature fillers that resist melting at temperatures substantially higher than the melting point of the fusible fillers; said fusible fillers being added in sufficient proportion to the said high temperature fillers such that, in response to the heat of fire, the spread liquid from the fusible fillers in combination with the high temperature fillers forms an insulative layer over the said resin binder; said combination of fillers including fillers capable of releasing chemically-bonded water when heated.
Claim 2
Dependent Claim
133 words
A plastics material with a resin binder, that includes co-polymerizable monomer and an epoxy based vinyl ester in its composition, having: a combination of fillers said combination of fillers including fusible fillers that begin melting at relatively low temperatures and retain a spread liquidous form over a large temperature range; said combination of fillers also including high temperature fillers that resist melting at temperatures substantially higher than the melting point of the fusible fillers; said fusible fillers being added in sufficient proportion to the said high temperature fillers such that, in response to the heat of fire, the spread liquid from the fusible fillers in combination with the high temperature fillers forms an insulative layer over the said resin binder; said combination of fillers including fillers capable of releasing chemically-bonded water when heated.
Claim 3
Dependent Claim
30 words
A plastics material as claimed in claim 1 wherein said high temperature fillers include carbonization accelerating fillers, that accelerate the insulative carbon layer to form on the said resin binder.
Claim 4
Dependent Claim
17 words
A plastics material as claimed in claim 2 wherein a said carbonization accelerating filler is ferric chloride.
Claim 5
Dependent Claim
30 words
A plastics material as claimed in claim 2 wherein the said high temperature fillers include ferric oxide with from zero to three moles of water per mole of ferric oxide.
Claim 6
Dependent Claim
16 words
A plastics material as claimed in claim 2 wherein a said fusible filler is zinc borate.
Claim 7
Dependent Claim
20 words
A plastics material as claimed in claim 1 wherein a said fusible filler is a finely powdered leadless borax glass.
Claim 8
Dependent Claim
17 words
. A plastics material as claimed in claim 1 wherein a said fusible filler is sodium meta-vanadate.
Claim 9
Dependent Claim
17 words
A plastics material as claimed claim 1 wherein a said high temperature fillers is natural calcium metasilicate.
Claim 10
Dependent Claim
19 words
A plastics material as claimed in claim 1 wherein a said high temperature filler is sodium potassium aluminum silicate.
Claim 11
Dependent Claim
19 words
A plastics material as claimed in claim 1 wherein a said high temperature fillers is a hydrated aluminum oxide.
Claim 12
Dependent Claim
30 words
A plastics material as claimed in claim 1 wherein the said high temperature fillers include ferric oxide with from zero to three moles of water per mole of ferric oxide.
Claim 13
Dependent Claim
16 words
A plastics material as claimed in claim 1 wherein a said fusible filler is zinc borate.
Claim 14
Dependent Claim
16 words
A plastics material as claimed in claim 1 wherein a said fusible filler is boric acid.
Claim 15
Dependent Claim
19 words
A plastics material as claimed in claim 1 wherein a said high temperature fillers is calcium magnesium (diopsid) silicate.
Claim 16
Dependent Claim
26 words
A plastics material as claimed in claim 1 wherein a said high temperature filler is hydrated aluminum oxide and a said fusible filler is zinc borate.
References Cited (Backward Citations)
US3553132A
Cited
US3714113A
Cited
US3934066A
Cited
US4043950A
Cited
US3956139A
Cited
US3854535A
Cited
US4123586A
Cited
US4041008A
Cited
US4130458A
Cited
US4123575A
Cited
US4340579A
Cited
US4486553A
Cited
US4440883A
Cited
US4668719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-23 | 1991-05-25 | 1991-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-23 | 1995-05-25 | 1995-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-23 | 1999-05-25 | 1999-11-24 | $7700.00 | Window Closed / Lapsed |