Patent US4186123A successfully refreshed from Google Patents.
US4186123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filled polymeric composition
Assignee: Johns Manville Corp
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Filing: 1975-12-08
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Granted: 1980-01-29
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Expires: 1995-12-08
Abstract
Abstract A composition is described comprising a resin matrix reinforced with nonamphibole asbestos fiber or other inorganic fibers having similar aspect ratios, fiber diameters and hydrophilic surfaces, in a concentration of 5 to 85 phr, the fiber being coated with a glycol in a concentration of 3 to 75% by weight of fiber. The glycol will have the following properties: (a) liquid and stable up to and at the processing temperature of the resin; (b) liquid at temperatures of less than 50° C. (122° F.); (c) chemically unreactive with the resin; (d) low hygroscopicity; and (e) generally immiscible with the resin at ambient temperatures. Preferably the glycol will be ethylene glycol, propolyene glycol or a polyethylene glycol having a molecular weight not greater than 1500. An internal lubricant may also be used in the composition. Both thermosetting and thermoplastic resins may be used; good results have been obtained with polyvinyl, polyolefin and phenolic resins. The invention comprises the composition itself, the process for its formation, the coated asbestos fiber used for reinforcing the composition and shaped articles, such as pipe, made from the composition.
Inventors
- 👤 John H. Kietzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:24
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/10; C08K7/12; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
130 words
A plastic composite composition having both good internal reinforcement and impact strength, which comprises: (a) a polymeric resin matrix, said resin being selected from the group consisting of acrylic, polyolefin, polyvinyl and polystyrene thermoplastic resins and phenolic, epoxy, polyurethane and silicone thermosetting resins; (b) nonamphibole asbestos reinforcing fiber in a concentration of 5 to 85 phr; and (c) coated on said fiber a glycol in a concentration of 1 to 75 percent by weight based on fiber, said glycol being stable and liquid up to and at the processing temperature of said resin, compatible but chemically unreactive and immiscible with said resin, of low hygroscopicity, and liquid at temperatures of less than 50° C., wherein said fiber is coated with said glycol prior to admixture thereof with said resin matrix.
Claim 2
Dependent Claim
130 words
A plastic composite composition having both good internal reinforcement and impact strength, which comprises: (a) a polymeric resin matrix, said resin being selected from the group consisting of acrylic, polyolefin, polyvinyl and polystyrene thermoplastic resins and phenolic, epoxy, polyurethane and silicone thermosetting resins; (b) nonamphibole asbestos reinforcing fiber in a concentration of 5 to 85 phr; and (c) coated on said fiber a glycol in a concentration of 1 to 75 percent by weight based on fiber, said glycol being stable and liquid up to and at the processing temperature of said resin, compatible but chemically unreactive and immiscible with said resin, of low hygroscopicity, and liquid at temperatures of less than 50° C., wherein said fiber is coated with said glycol prior to admixture thereof with said resin matrix.
Claim 3
Dependent Claim
30 words
The composition of claim 1 wherein said glycol is selected from the group consisting of ethylene glycol, propylene glycol, and those polyethylene glycols having molecular weights not greater than 1500.
Claim 4
Dependent Claim
18 words
The composition of claim 2 wherein said glycol is present in a concentration of 5 to 50 percent.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein said fiber is present as 5 to 50 phr.
Claim 6
Dependent Claim
20 words
The composition of claim 1 wherein said glycol is a polyethylene glycol having a molecular weight not greater than 600.
Claim 7
Dependent Claim
25 words
The composition of claim 1 wherein said polymeric resin matrix is selected from the group consisting of said acrylic, polyolefin, polyvinyl and polystyrene thermoplastic resins.
Claim 8
Dependent Claim
14 words
The composition of claim 6 wherein said resin is a polyvinyl or polyolefin resin.
Claim 9
Dependent Claim
12 words
The composition of claim 7 wherein said resin is a polyvinyl resin.
Claim 10
Dependent Claim
13 words
The composition of claim 8 wherein said resin is a polyvinyl halide resin.
Claim 11
Dependent Claim
13 words
The composition of claim 9 wherein said polyvinyl halide resin is polyvinyl chloride.
Claim 12
Dependent Claim
20 words
The composition of claim 10 wherein said glycol is a polyethylene glycol having a molecular weight not greater than 600.
Claim 13
Dependent Claim
12 words
The composition of claim 7 wherein said resin is a polyolefin resin.
Claim 14
Dependent Claim
11 words
The composition of claim 12 wherein said polyolefin resin is polyethylene.
Claim 15
Dependent Claim
11 words
The composition of claim 12 wherein said polyolefin resin is polybutylene.
Claim 16
Dependent Claim
20 words
The composition of claim 12 wherein said glycol is a polyethylene glycol having a molecular weight not greater than 600.
Claim 17
Dependent Claim
25 words
The composition of claim 1 wherein said polymeric resin matrix is selected from the group consisting of said phenolic, epoxy, polyurethane and silicone thermosetting resins.
Claim 18
Dependent Claim
12 words
The composition of claim 16 wherein said resin is a phenolic resin.
Claim 19
Dependent Claim
13 words
The composition of claim 1 further comprising lubricant for said polymeric resin matrix.
Claim 20
Dependent Claim
25 words
The composition of claim 18 wherein said lubricant is selected from the group consisting of stearic acid, metal salts of stearic acid and polyethylene glycol.
Claim 21
Dependent Claim
98 words
A process for the formation of plastic composite articles having both good internal reinforcement and impact strength, which comprises: (a) coating a nonamphibole asbestos fiber with a glycol selected from the group consisting of ethylene glycol, propylene glycol, and those polyethylene glycols having molecular weights not greater than 1500, said glycol being present as 1 to 75 percent by weight of said fiber, and (b) thereafter mixing the coated fiber with a polymeric resin in an amount such that said coated fiber is present as 5 to 85 phr and subsequently molding said composition into a shaped article.
Claim 22
Dependent Claim
98 words
A process for the formation of plastic composite articles having both good internal reinforcement and impact strength, which comprises: (a) coating a nonamphibole asbestos fiber with a glycol selected from the group consisting of ethylene glycol, propylene glycol, and those polyethylene glycols having molecular weights not greater than 1500, said glycol being present as 1 to 75 percent by weight of said fiber, and (b) thereafter mixing the coated fiber with a polymeric resin in an amount such that said coated fiber is present as 5 to 85 phr and subsequently molding said composition into a shaped article.
Claim 23
Dependent Claim
20 words
The process of claim 20 wherein said coating of said fiber comprises high-intensity mixing of said fiber and said glycol.
Claim 24
Dependent Claim
22 words
The process of claim 20 wherein said coating of said fiber comprises saturating the fiber from a water solution of said glycol.
Claim 25
Dependent Claim
23 words
The process of claim 20 wherein said glycol is present on said fiber as 5 to 50 percent by weight of fiber weight.
Claim 26
Dependent Claim
16 words
The process of claim 20 wherein said coated fiber is present as 5 to 50 phr.
Claim 27
Dependent Claim
22 words
The process of claim 20 further comprising also incorporating into said mixture of resin and coated fiber a lubricant for said resin.
Claim 28
Dependent Claim
25 words
The process of claim 25 wherein said lubricant is selected from the group consisting of stearic acid, metal salts of stearic acid and polyethylene glycol.
Claim 29
Dependent Claim
24 words
A shaped composite article having both good internal reinforcement and impact strength, which comprises a pipe formed according to the process of claim 20.
Claim 30
Dependent Claim
83 words
Nonamphibole asbestos fiber coated with a glycol selected from the group consisting of ethylene glycol, propylene glycol, and those polyethylene glycols having molecular weights not greater than 1500, said glycol being present in a concentration of 1 to 75 percent by weight based on fiber, wherein complete coating of said asbestos fiber is assured by saturation of the asbestos fiber with a solution of glycol diluted with water or by coating the asbestos fiber with glycol alone by means of high intensity mixing.
Claim 31
Dependent Claim
83 words
Nonamphibole asbestos fiber coated with a glycol selected from the group consisting of ethylene glycol, propylene glycol, and those polyethylene glycols having molecular weights not greater than 1500, said glycol being present in a concentration of 1 to 75 percent by weight based on fiber, wherein complete coating of said asbestos fiber is assured by saturation of the asbestos fiber with a solution of glycol diluted with water or by coating the asbestos fiber with glycol alone by means of high intensity mixing.
Claim 32
Dependent Claim
21 words
The coated asbestos fiber of claim 28 wherein said glycol is present as 5 to 50 weight percent of fiber weight.
Claim 33
Dependent Claim
22 words
The coated asbestos fiber of claim 28 wherein said glycol is a polyethylene glycol having a molecular weight not greater than 600.
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) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |