US5017637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low toxicity fire retardant thermoplastic material
Assignee: Michigan Molecular Institute
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Filing: 1989-03-16
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Granted: 1991-05-21
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Expires: 2009-03-16
Abstract
Abstract A fire-retardant thermoplastic compound that can be used as compound or further enhanced through chemical cross linkage. The compounding thereof and the composition are disclosed. The compound is manufactured from a composition of a copolymer or terpolymer with a carboxylic acid comonomer and optionally a low modulus polymer and a synthetic hydrocarbon elastomer with or without a graft of ethylenically unsaturated carboxylic acid or anhydride. A fire retardant additive comprising a group I, group II or group III metal oxide hydrate with the proviso that at least 1% by weight of the composition is in the form of an organopolysiloxane. The compound may be used for sheet or wire extrusion and for injection or compression molding.
Inventors
- 👤 Philip J. Smith
- 👤 Jacques Mortimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0853; C08L23/0869; H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/295; C08L2201/00; C08L2201/02; C08L2205/00; C08L2205/02; C08L2205/03; C08L2205/035; C08L23/16; C08L2312/00; C08L2312/06; C08L51/00; C08L51/06; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
A fire retardant composition having an olefinic base material, wherein compositional components are cross-linked in a hydrophobic/hydrophilic relationship by means of a condensation-type reaction between carboxyl groups contained within said olefinic base material and hydroxyl groups contained within a frame retardant additive, with silanol groups contained in an organopolysiloxane, said composition comprising: (a) from about 5% to about 60% by weight of olefinic copolymer or terpolymer which includes a substance containing carboxyl groups: (b) from about 1% to about 15% by weight of an organopolysiloxane; (c) from about 20% to about 85% by weight of a metal oxide hydrate, wherein said metal is selected from the group consisting of a metal from group I, group II or group III; and (d) from about 0.1% up to about 10% by weight of a dialdehyde.
Claim 2
Dependent Claim
133 words
A fire retardant composition having an olefinic base material, wherein compositional components are cross-linked in a hydrophobic/hydrophilic relationship by means of a condensation-type reaction between carboxyl groups contained within said olefinic base material and hydroxyl groups contained within a frame retardant additive, with silanol groups contained in an organopolysiloxane, said composition comprising: (a) from about 5% to about 60% by weight of olefinic copolymer or terpolymer which includes a substance containing carboxyl groups: (b) from about 1% to about 15% by weight of an organopolysiloxane; (c) from about 20% to about 85% by weight of a metal oxide hydrate, wherein said metal is selected from the group consisting of a metal from group I, group II or group III; and (d) from about 0.1% up to about 10% by weight of a dialdehyde.
Claim 3
Dependent Claim
20 words
A fire retardant composition of claim 1, wherein said dialdehyde is selected from the group consisting of glyoxal and glutaraldehyde.
Claim 4
Dependent Claim
21 words
A fire retardant composition of claim 2, wherein 0.1 to 4% by weight of said selected dialdehyde is in said composition.
Claim 5
Dependent Claim
21 words
A fire retardant composition of claim 3, wherein 0.5 to 3% by weight of said selected dialdehyde is in said composition.
Claim 6
Dependent Claim
76 words
A polycondensation-type method of fabricating a fire retardant insulative composition, comprising the steps of: (a) linking carboxyl groups contained in a hydrophobic olefinic base material with silanol groups contained in a silicone material; (b) linking silanol groups of said silicone material additionally with hydroxyl groups contained in a hydrophilic fire retardant material, whereby said silicone material is linked to both said hydrophilic and hydrophobic materials, and (c) blending a dialdehyde into said composition to enhance cross-linking.
Claim 7
Dependent Claim
76 words
A polycondensation-type method of fabricating a fire retardant insulative composition, comprising the steps of: (a) linking carboxyl groups contained in a hydrophobic olefinic base material with silanol groups contained in a silicone material; (b) linking silanol groups of said silicone material additionally with hydroxyl groups contained in a hydrophilic fire retardant material, whereby said silicone material is linked to both said hydrophilic and hydrophobic materials, and (c) blending a dialdehyde into said composition to enhance cross-linking.
Claim 8
Dependent Claim
63 words
A fire retardant composition formed by a polycondensation-type process, comprising: a hydrophobic olefinic base material containing carboxyl groups; a hydrophobic fire retardant filler material containing hydroxy groups: a silicone material containing silanol groups linked to both said hydrophobic olefinic base material carboxyl groups and said hydrophilic fire retardant filler material hydroxyl groups; and a dialdehyde linked within the silanol and carboxyl group linkage.
Claim 9
Dependent Claim
63 words
A fire retardant composition formed by a polycondensation-type process, comprising: a hydrophobic olefinic base material containing carboxyl groups; a hydrophobic fire retardant filler material containing hydroxy groups: a silicone material containing silanol groups linked to both said hydrophobic olefinic base material carboxyl groups and said hydrophilic fire retardant filler material hydroxyl groups; and a dialdehyde linked within the silanol and carboxyl group linkage.
Claim 10
Dependent Claim
19 words
The fire retardant composition of claim 6, further comprising a dialdehyde linked within the silanol and carboxyl group linkage.
Claim 11
Dependent Claim
18 words
The fire retardant composition of claim 6, wherein said silicone material contains a silicone resin and siloxane fluid.
Claim 12
Dependent Claim
18 words
The fire retardant composition of claim 7, wherein said silicone material contains a silicone resin and siloxane fluid.
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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) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-20 | 2002-11-19 | 2003-05-21 | $7700.00 | Window Closed / Lapsed |