US4544685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulation jacketing material
Assignee: Johns Manville
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Filing: 1984-10-10
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Granted: 1985-10-01
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Expires: 2004-10-10
Abstract
Abstract A composition having excellent anti-smoke properties and useful as a jacketing for pipe insulation and the such is provided. The composition can be thermoformed into an insulation jacketing product having a high delayed ignition time, a smoke development rating of 50 or less, and a flame spread rating of 25 or less as measured by ASTM E84.
Inventors
- 👤 Robert J. Hoelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:58
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/02; C08K13/04; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L23/00; C08L23/26; C08L23/28; C08L23/286; Y; Y10; Y10S; Y10S428/00; Y10S428/92
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
109 words
A composition useful as an insulation jacketing material having excellent anti-smoke properties comprising the following ingredients: (a) about 54-60 wt% polyvinyl chloride resin having an Inherent Viscosity of from about 0.70-1.09 as measured by ASTM D 1243; (b) about 1.5-4 wt% of at least one heat stabilizer; (c) about 0.5-4.5 wt% of at least one lubricant; (d) about 6-8 wt% chlorinated polyethylene; (e) about 8-10 wt% titanium dioxide; (f) about 18-20.5 wt% of at least one compound selected from the group consisting of (i) ground aluminum hydroxide and (ii) ground magnesium hydroxide wherein said compound is surface treated with a fatty acid; and (g) about 3-4 wt% molybdenum trioxide.
Claim 2
Dependent Claim
109 words
A composition useful as an insulation jacketing material having excellent anti-smoke properties comprising the following ingredients: (a) about 54-60 wt% polyvinyl chloride resin having an Inherent Viscosity of from about 0.70-1.09 as measured by ASTM D 1243; (b) about 1.5-4 wt% of at least one heat stabilizer; (c) about 0.5-4.5 wt% of at least one lubricant; (d) about 6-8 wt% chlorinated polyethylene; (e) about 8-10 wt% titanium dioxide; (f) about 18-20.5 wt% of at least one compound selected from the group consisting of (i) ground aluminum hydroxide and (ii) ground magnesium hydroxide wherein said compound is surface treated with a fatty acid; and (g) about 3-4 wt% molybdenum trioxide.
Claim 3
Dependent Claim
22 words
A composition according to claim 1 wherein said heat stabilizers in 1(b) are an organo tin mercaptide and an epoxidized vegetable oil.
Claim 4
Dependent Claim
22 words
A composition according to claim 1 wherein said lubricants in 1(c) are metal salts of fatty acids, esterified waxes, and polyethylene waxes.
Claim 5
Dependent Claim
15 words
A composition according to claim 1 wherein said chlorinated polyethylene is 36 percent chlorinated polyethylene.
Claim 6
Dependent Claim
13 words
A composition according to claim 1 wherein said fatty acid is stearic acid.
Claim 7
Dependent Claim
103 words
A composition having excellent anti-smoke properties consisting essentially in weight percent the following ingredients: (a) about 57 wt% polyvinylchloride resin having an Inherent Viscosity of from about 0.70 to 1.09 as measured by ASTM D 1243; (b) about 1.9 wt% butyl tin mercaptide; (c) about 1.2 wt% epoxidized soybean oil; (d) about 0.9 wt% calcium stearate; (e) about 0.4 wt% Esterified Montan Wax; (f) about 0.1 wt% polyethylene wax; (g) about 8.6 wt% titanium dioxide; (h) about 7.1 wt% nominal 36 percent Cl polyethylene; (i) about 3.4 wt% molybdenum trioxide; and (j) about 19.4 wt% ground Al(OH) 3 surface treated with stearic acid.
Claim 8
Dependent Claim
103 words
A composition having excellent anti-smoke properties consisting essentially in weight percent the following ingredients: (a) about 57 wt% polyvinylchloride resin having an Inherent Viscosity of from about 0.70 to 1.09 as measured by ASTM D 1243; (b) about 1.9 wt% butyl tin mercaptide; (c) about 1.2 wt% epoxidized soybean oil; (d) about 0.9 wt% calcium stearate; (e) about 0.4 wt% Esterified Montan Wax; (f) about 0.1 wt% polyethylene wax; (g) about 8.6 wt% titanium dioxide; (h) about 7.1 wt% nominal 36 percent Cl polyethylene; (i) about 3.4 wt% molybdenum trioxide; and (j) about 19.4 wt% ground Al(OH) 3 surface treated with stearic acid.
Claim 9
Dependent Claim
11 words
A thermal insulation jacketing thermoformed from the composition of claim 1.
Claim 10
Dependent Claim
35 words
A thermal insulation jacketing thermoformed from the composition of claim 1 and having a flame spread rating of 25 or less and a smoke development rating of 50 or less as measured by ASTM E84.
Claim 11
Dependent Claim
11 words
A thermal insulation jacketing thermoformed from the composition of claim 6.
Claim 12
Dependent Claim
35 words
A thermal insulation jacketing thermoformed from the composition of claim 6 and having a flame spread rating of 25 or less and a smoke development rating of 50 or less as measured by ASTM E84.
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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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |