Patent US4150188A successfully refreshed from Google Patents.
US4150188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproof laminations for electric and electronic devices and methods therefor
Assignee: Rhone Poulenc Industries SA
•
Filing: 1977-07-11
•
Granted: 1979-04-17
•
Expires: 1997-07-11
Abstract
Abstract Fireproof laminations for electric or electronic devices are comprised of a cellulosic substrate impregnated with a phenolic resin, further incorporating a fireproofing-effective quantity of encapsulated red phosphorus particulates.
Inventors
- 👤 Daniel Brulet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:20
CPC Classifications
B; B32; B32B; B32B23/00; B32B23/14; B32B29/00; B32B29/002; B32B29/005; B32B38/00; B32B38/08; C; C08; C08K; C08K3/00; C08K3/02; H; H01; H01B; H01B3/00; H01B3/18; H01B3/185; H01B3/48; H01B3/52; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2317/00; B32B2317/12; B32B2317/125; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249953; Y10T428/249954; Y10T428/249986; Y10T428/25; Y10T428/254; Y10T428/26; Y10T428/31504; Y10T428/31721; Y10T428/31786; Y10T428/31797; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/673; Y10T442/696; Y10T442/699
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
29 words
Lamination materials adapted for electric or electronic devices comprising a fibrous substrate impregnated with a phenolic resin having incorporated therein a fireproofing-effective quantity of an encapsulated red phosphorous particulate.
Claim 2
Dependent Claim
29 words
Lamination materials adapted for electric or electronic devices comprising a fibrous substrate impregnated with a phenolic resin having incorporated therein a fireproofing-effective quantity of an encapsulated red phosphorous particulate.
Claim 3
Dependent Claim
12 words
The article of claim 1, wherein said substrate is a cellulosic material.
Claim 4
Dependent Claim
46 words
The article of claim 2, wherein the impregnant comprises a plasticized phenolic resin, a fireproofing-effective quantity of a red phosphorous particulate encapsulated in a composition which is insoluble in water, alcohol, and mixtures thereof, and in organic solvents and their compounds, bisphenol-A-tetra-brominate, and a plasticizer therefor.
Claim 5
Dependent Claim
29 words
The article of claim 3, wherein said red phosphorous particulate has a granularity whereby the residue in an 80μ sieve is less than about 10%, measured prior to encapsulation.
Claim 6
Dependent Claim
20 words
The article of claim 4, wherein said red phosphorous comprises from about 50 to about 90% of the encapsulated particulate.
Claim 7
Dependent Claim
26 words
The article of claim 5, wherein the encapsulant is selected from the group consisting of waxes, paraffins, chlorinated paraffins, reticulable thermoplastic resins, thermosetting resins, and malemides.
Claim 8
Dependent Claim
50 words
The article of claim 2, wherein the cellulosic material is kraft paper, and wherein the impregnant composition comprises a mixture of plasticized phenolic resin, a fire retardant-effective quantity of a red phosphorous particulate encapsulated in a composition which is insoluble in water and/or alcohol, bisphenol-A-tetra-brominate, and a phosphoric ester plasticizer.
Claim 9
Dependent Claim
14 words
A lamination comprising a plurality of fused, impregnated fibrous articles defined by claim 2.
Claim 10
Dependent Claim
34 words
A process for producing lamination materials adapted for electric or electronic devices, comprising the step of impregnating a fibrous substrate with a phenolic resin incorporating a fireproofing-effective quantity of an encapsulated red phosphorous particulate.
Claim 11
Dependent Claim
34 words
A process for producing lamination materials adapted for electric or electronic devices, comprising the step of impregnating a fibrous substrate with a phenolic resin incorporating a fireproofing-effective quantity of an encapsulated red phosphorous particulate.
Claim 12
Dependent Claim
86 words
The process of claim 9, wherein said impregnating step comprises: (a) impregnating said substrate with a dilute, 1:1 water-alcohol mixture of a phenolic resole having a viscosity less than about 500 cp and a dry extract of from about 15 to about 25%; and, (b) treating the impregnated substrate of (a) with a dilute mixture of methanol-toluene and a plasticized resole derived from a phenol, said mixture further including a fireproofing-effective quantity of an encapsulated red phosphorous particulate, tetra-bisphenol-A-brominate, and a plasticizing phosphoric ester of aryl.
Claim 13
Dependent Claim
48 words
The process of claim 10, wherein the phenol of the base resole of said treating step is an alkylized phenol, and the plasticizer for said resole is selected from the group consisting of siccative oils, oiticissa oil, linseed oil, castor oil, tall oil, soybean oil, and cottonseed oil.
Claim 14
Dependent Claim
29 words
The process of claim 10, wherein said red phosphorous particulate has a granularity whereby the residue in an 80μ sieve is less than about 10%, measured prior to encapsulation.
Claim 15
Dependent Claim
20 words
The process of claim 12, wherein said red phosphorous comprises from about 50 to about 90% of the encapsulated particulates.
Claim 16
Dependent Claim
27 words
The process of claim 13, wherein the encapsulant composition is selected from the group consisting of waxes, paraffins, chlorinated paraffins, reticulable thermoplastic resins, thermosetting resins, and malemides.
Claim 17
Dependent Claim
50 words
The process of claim 10, wherein said impregnating step deposits an amount of resin of from about 12 to about 24% relative to the weight of said substrate, and said treating step deposits an amount of equivalent dry material of from about 40 to about 80% of the impregnated substrate.
Claim 18
Dependent Claim
28 words
The process of claim 13, wherein said red phosphorous is present in an amount of from about 1 to about 15%, by weight, relative to said phenolic resin.
Claim 19
Dependent Claim
28 words
The article of claim 5, wherein said red phosphorous is present in an amount of from about 1 to about 15%, by weight, relative to said phenolic resin.
Claim 20
Dependent Claim
10 words
The article of claim 1, wherein said substrate is paper.
Claim 21
Dependent Claim
11 words
The article of claim 1, wherein said substrate is textile fiber.
Claim 22
Dependent Claim
12 words
The article of claim 1, wherein said phenolic resin is a resole.
Claim 23
Dependent Claim
12 words
The article of claim 18, wherein said phenolic resin is a resole.
Claim 24
Dependent Claim
31 words
The lamination of claim 8, having a level of resistance to trichloroethylene of greater than 2, a total insulation resistance of greater than 1, and water absorption of less than 0.75.
Claim 25
Dependent Claim
17 words
The lamination of claim 22, further having suitability of punching of less than 3 and good translucence.
Claim 26
Dependent Claim
31 words
Lamination materials adapted for electric or electronic devices consisting essentially of a fibrous substrate impregnated with a phenolic resin having incorporated therein a fireproofing-effective quantity of an encapsulated red phosphorous particulate.
Claim 27
Dependent Claim
31 words
Lamination materials adapted for electric or electronic devices consisting essentially of a fibrous substrate impregnated with a phenolic resin having incorporated therein a fireproofing-effective quantity of an encapsulated red phosphorous particulate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |