US4622350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low smoke polypropylene insulation compositions
Assignee: Shell USA Inc
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Filing: 1985-12-30
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Granted: 1986-11-11
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Expires: 2005-12-30
Abstract
Abstract This invention relates to a resin composition comprising polypropylene, a hydrogenated mono alkylarene-conjugated diene block copolymer, a functionalized low molecular weight polypropylene wax, oil, and a hydrated inorganic filler which can be blended to form a self-extinguishing, low smoke and halogen free insulation composition which exhibits high ultimate elongation and is relatively easy to process.
Inventors
- 👤 Ronald D. Icenogle
- 👤 Lie K. Djiauw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:49
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0016; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L53/00; C08L53/02; C08L53/025; C08L2201/00; C08L2201/02; C08L2205/00; C08L2205/03; C08L2205/035; C08L91/00; C08L91/06
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
70 words
A flame retardant insulation composition comprising: (a) 5-40 percent by weight of a hydrogenated monoalkyarene (A)-conjugated diene (B) block copolymer containing at least two A blocks and at least one B block; (b) 1-20 percent by weight of a plasticizer; (c) 1-40 percent by weight of polypropylene; (d) 0.25-10 percent by weight of a functionalized low molecular weight polypropylene wax; (e) 10-85 percent by weight of a hydrated inorganic filler.
Claim 2
Dependent Claim
70 words
A flame retardant insulation composition comprising: (a) 5-40 percent by weight of a hydrogenated monoalkyarene (A)-conjugated diene (B) block copolymer containing at least two A blocks and at least one B block; (b) 1-20 percent by weight of a plasticizer; (c) 1-40 percent by weight of polypropylene; (d) 0.25-10 percent by weight of a functionalized low molecular weight polypropylene wax; (e) 10-85 percent by weight of a hydrated inorganic filler.
Claim 3
Dependent Claim
17 words
The compositions of claim 1 wherein the block copolymer is a hydrogenated styrene butadiene styrene block copolymer.
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein the filler is magnesium hydroxide.
Claim 5
Dependent Claim
16 words
The composition of claim 3 wherein the magnesium hydroxide is surface treated with a coupling agent.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein the coupling agent is a fatty acid metal salt.
Claim 7
Dependent Claim
12 words
The composition of claim 4 wherein the coupling agent is an oleate.
Claim 8
Dependent Claim
12 words
The composition of claim 4 wherein the coupling agent is a stearate.
Claim 9
Dependent Claim
12 words
The composition of claim 4 wherein the coupling agent is a maleate.
Claim 10
Dependent Claim
12 words
The composition of claim 4 wherein the coupling agent is a silane.
Claim 11
Dependent Claim
12 words
The composition of claim 4 wherein the coupling agent is a titanate.
Claim 12
Dependent Claim
12 words
The composition of claim 4 wherein the coupling agent is a zirco-aluminate.
Claim 13
Dependent Claim
11 words
The composition of claim 1 wherein the filler is alumina trihydrate.
Claim 14
Dependent Claim
22 words
The composition of claim 1 wherein the low molecular weight polypropylene wax is a maleic anhydride functionalized low molecular weight polypropylene wax.
Claim 15
Dependent Claim
12 words
The composition of claim 1 wherein the plasticizer is a mineral oil.
Claim 16
Dependent Claim
14 words
The composition of claim 1 wherein the plasticizer is a styrene butadiene diblock copolymer.
Claim 17
Dependent Claim
23 words
The composition of claim 4 wherein the hydrated magnesium hydroxide has a mean secondary particle size of about 0.6 to about 1.2 microns.
Claim 18
Dependent Claim
18 words
The composition of claim 4 wherein the hydrated magnesium hydroxide has a crystallite aspect ratio greater than 4.
Claim 19
Dependent Claim
37 words
The composition of claim 1 comprising about 15 to 20 percent (a), about 4 to 8 percent (b), about 4 to 8 percent (c), about 0.5 to 5 percent (d) and about 63 to 75 percent (e).
Claim 20
Dependent Claim
43 words
A flame retardant insulation compositions comprising a hydrogenated styrene-butadiene-styrene block copolymer, homopolypropylene, a maleic anhydride functionalized low molecular weight polypropylene wax, an oil plasticizer and a hydrated magnesium hydroxide filler which has been surface treated with a fatty acid metal salt coupling agent.
Claim 21
Dependent Claim
43 words
A flame retardant insulation compositions comprising a hydrogenated styrene-butadiene-styrene block copolymer, homopolypropylene, a maleic anhydride functionalized low molecular weight polypropylene wax, an oil plasticizer and a hydrated magnesium hydroxide filler which has been surface treated with a fatty acid metal salt coupling agent.
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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) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |