Patent US3948673A successfully refreshed from Google Patents.
US3948673A
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Water soluble sizing for glass fibers and glass fibers sized therewith
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1973-10-19
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Granted: 1976-04-06
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Expires: 1993-10-19
Abstract
Abstract Glass Fibers sized with water soluble polymeric compositions to maintain strand integrity during processing and to induce complete filamentization of the glass fibers from a bundle during blending and mixing of the glass fiber bundle with an aqueous medium.
Inventors
- 👤 Kenneth P. Chase
- 👤 William N. Stassen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:19
CPC Classifications
C; C04; C04B; C04B14/00; C04B14/38; C04B14/42; C03; C03C; C03C25/00; C03C25/10; C03C25/1025; C03C25/103; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2962; Y10T428/2964
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
82 words
A product comprising an aqueous cementitious composition containing glass fibers having a size in contact with the surface of said fibers, said size consisting essentially of at least one water-soluble polymer and a solution rate modifier selected from the group consisting of sulfuric acid, nitric acid, hydrochloric acid, acetic acid, potassium hydroxide, tetramethylammonium hydroxide, sodium hydroxide and glycerol, said solution rate modifier being present in an amount sufficient to alter the rate of solution of said polymer in said aqueous cementitious composition.
Claim 2
Dependent Claim
82 words
A product comprising an aqueous cementitious composition containing glass fibers having a size in contact with the surface of said fibers, said size consisting essentially of at least one water-soluble polymer and a solution rate modifier selected from the group consisting of sulfuric acid, nitric acid, hydrochloric acid, acetic acid, potassium hydroxide, tetramethylammonium hydroxide, sodium hydroxide and glycerol, said solution rate modifier being present in an amount sufficient to alter the rate of solution of said polymer in said aqueous cementitious composition.
Claim 3
Dependent Claim
19 words
The product of claim 1 in which said size has a pH within the range of 2 to 10.
Claim 4
Dependent Claim
26 words
The product of claim 1 in which said water-soluble polymer possesses an acidic group or a basic group which is neutralized by said solution rate modifier.
Claim 5
Dependent Claim
13 words
The product of claim 1 in which said polymer is anionic or cationic.
Claim 6
Dependent Claim
28 words
The product of claim 1 in which said polymer is a nonionic polymer selected from the group consisting of dextrinized starches, poly(ethylene oxide), poly(acrylamide), poly(N-vinyl pyrrolidone) and poly(vinylmethylether).
Claim 7
Dependent Claim
36 words
The product of claim 1 in which said polymer is a cationic polymer selected from the group consisting of poly(ethylene imine), ethoxylated poly(ethylene imine), propoxylated poly(ethylene imine), poly(N,N,N-trimethylaminoethylmethacrylate methylsulfate) and homopolymers and copolymers of N,N-dimethylaminoethyl methacrylate.
Claim 8
Dependent Claim
34 words
The product of claim 1 in which said polymer is an anionic polymer selected from the group consisting of poly(acrylic acid), poly(methyacrylic acid), poly(sodium vinyl sulfonate), and copolymers of acrylic acid and methacrylic acid.
Claim 9
Dependent Claim
20 words
The product of claim 1 in which said polymer is poly(ethylene imine) and said solution rate modifier is sulfuric acid.
Claim 10
Dependent Claim
20 words
The product of claim 1 in which said polymer is poly(acrylic acid) and said solution rate modifier is tetramethylammonium hydroxide.
Claim 11
Dependent Claim
19 words
The product of claim 1 in which said polymer is poly(acrylic acid) and said solution rate modifier is glycerol.
Claim 12
Independent Claim
90 words
A method for producing a cementitious composition which comprises: a. dispersing glass fiber bundles throughout an aqueous cementitious composition to form a mixture, the surface of the glass fibers being in contact with a size consisting essentially of at least one water-soluble polymer and a solution rate modifier selected from the group consisting of sulfuric acid, nitric acid, hydrochloric acid, acetic acid, potassium hydroxide, tetramethylammonium hydroxide, sodium hydroxide and glycerol; b. agitating said mixture to filamentize said glass fiber bundles and to disperse the glass fibers throughout said cementitious composition.
Claim 13
Independent Claim
90 words
A method for producing a cementitious composition which comprises: a. dispersing glass fiber bundles throughout an aqueous cementitious composition to form a mixture, the surface of the glass fibers being in contact with a size consisting essentially of at least one water-soluble polymer and a solution rate modifier selected from the group consisting of sulfuric acid, nitric acid, hydrochloric acid, acetic acid, potassium hydroxide, tetramethylammonium hydroxide, sodium hydroxide and glycerol; b. agitating said mixture to filamentize said glass fiber bundles and to disperse the glass fibers throughout said cementitious composition.
Claim 14
Dependent Claim
26 words
The method of claim 11 in which said water-soluble polymer possesses an acidic group or a basic group which is neutralized by said solution rate modifier.
Claim 15
Dependent Claim
13 words
The method of claim 11 in which said polymer is anionic or cationic.
Claim 16
Dependent Claim
28 words
The method of claim 11 in which said polymer is a nonionic polymer selected from the group consisting of dextrinized starches, poly(ethylene oxide), poly(acrylamide) poly(N-vinyl pyrolidone) and poly(vinylmethylether).
Claim 17
Dependent Claim
36 words
The method of claim 11 in which said polymer is a cationic polymer selected from the group consisting of poly(ethylene imine), ethoxylated poly(ethylene imine), propoxylated poly(ethylene imine), poly(N,N,N-trimethylaminoethylmethocrylate methylsulfate), and homopolymers and copolymers of N,N-dimethylamineethyl methacrylate.
Claim 18
Dependent Claim
34 words
The method of claim 11 in which said polymer is an anionic polymer selected from the group consisting of poly(acrylic acid), poly(methacrylic acid), poly(sodium vinyl sulfonate), and copolymers of acrylic acid and methacrylic acid.
Claim 19
Dependent Claim
20 words
The method of claim 11 in which said polymer is poly(ethylene imine and said solution rate modifier is sulfuric acid.
Claim 20
Dependent Claim
20 words
The method of claim 11 in which said polymer is poly(acrylic acid) and said solution rate modifier is tetramethylammonium hydroxide.
Claim 21
Dependent Claim
19 words
The method of claim 11 in which said polymer is poly(acrylic acid) and said solution rate modifier is glycerol.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |