Patent US3968068A successfully refreshed from Google Patents.
US3968068A
Expired / Lapsed
US
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Glass sizing
Assignee: Owens Corning
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Filing: 1974-06-07
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Granted: 1976-07-06
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Expires: 1994-06-07
Abstract
Abstract A sizing composition for glass fibers is disclosed, the sizing containing a silane coupling agent, a chromic complex, a vinyl acetate copolymer and a polyvinyl acetate homopolymer, the sizing being particularly suitable for application to gun roving.
Inventors
- 👤 William N. Haggerty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:57
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
75 words
At least one glass filament, at least a portion of the surface of said filament being in contact with the residue produced by evaporting water from an aqueous composition consisting essentially of a non-plasticized vinyl acetate copolymer emulsion, a polyvinyl acetate homopolymer, a vinyl-tri(beta-methoxyethoxy)silane, a methacrylatochromic chloride, a amide and water said amide having the formula ##EQU2## wherein R 1 , R 2 and R 3 , represent a mixture of fatty acid chain lengths.
Claim 2
Dependent Claim
75 words
At least one glass filament, at least a portion of the surface of said filament being in contact with the residue produced by evaporting water from an aqueous composition consisting essentially of a non-plasticized vinyl acetate copolymer emulsion, a polyvinyl acetate homopolymer, a vinyl-tri(beta-methoxyethoxy)silane, a methacrylatochromic chloride, a amide and water said amide having the formula ##EQU2## wherein R 1 , R 2 and R 3 , represent a mixture of fatty acid chain lengths.
Claim 3
Dependent Claim
24 words
The glass filament of claim 1 in which said composition consisting essentially of glacial acetic acid and an anionic fatty acid long chain derivative.
Claim 4
Dependent Claim
54 words
The glass filament of claim 1 in which said composition consisting essentially of said non-plasticized vinyl acetate copolymer emulsion in an amount within the range of from about 3 to about 7 weight percent and said polyvinyl acetate homopolymer in an amount within the range of from about 1.5 to about 4 weight percent.
Claim 5
Dependent Claim
30 words
The glass filament of claim 3 in which said composition consisting essentially of said vinyl-tri(beta-methoxyethoxy)silane in an amount within the range of from about 0.1 to about 0.3 weight percent.
Claim 6
Dependent Claim
31 words
The glass filament of claim 4 in which said composition consisting essentially of said methacrylatochromic chloride in an amount within the range of from about 1 to about 2 weight percent.
Claim 7
Dependent Claim
30 words
The glass filament of claim 5 in which said composition consisting essentially of said amide in an amount within the range of from about 0.03 to about 0.05 weight percent.
Claim 8
Dependent Claim
32 words
The glass filament of claim 1 in which said residue consisting essentially of from about 1.16 to about 1.3 weight percent of the total weight of said glass filament and said residue.
Claim 9
Dependent Claim
77 words
At least one glass filament, at least a portion of the surface of said filament being in contact with the residue produced by evaporating water from an aqueous composition consisting essentially of a non-plasticized vinyl acetate copolymer emulsion, a polyvinyl acetate homopolymer, a amide and an anionic fatty acid long chain derivative and water said amide having the formula ##EQU3## wherein R 1 , R 2 and R 3 represent a mixture of fatty acid chain lengths.
Claim 10
Dependent Claim
77 words
At least one glass filament, at least a portion of the surface of said filament being in contact with the residue produced by evaporating water from an aqueous composition consisting essentially of a non-plasticized vinyl acetate copolymer emulsion, a polyvinyl acetate homopolymer, a amide and an anionic fatty acid long chain derivative and water said amide having the formula ##EQU3## wherein R 1 , R 2 and R 3 represent a mixture of fatty acid chain lengths.
Claim 11
Dependent Claim
35 words
The glass filament of claim 8 in which said non-plasticized vinyl acetate copolymer emulsion is present in said aqueous composition in an amount within the range of from about 3 to about 7 weight percent.
Claim 12
Dependent Claim
33 words
The glass filament of claim 8 in which said polyvinyl acetate homopolymer is present in said aqueous composition in an amount within the range of from about 1.5 to about 4 weight percent.
Claim 13
Dependent Claim
31 words
The glass filament of claim 8 in which said amide is present in said aqueous composition in an amount within the range of from about 0.03 to about 0.05 weight percent.
Claim 14
Dependent Claim
36 words
The glass filament of claim 8 in which said anionic fatty acid long chain derivative is present in said aqueous composition in an amount within the range of from about 0.05 to about 0.25 weight percent.
Claim 15
Dependent Claim
81 words
The glass filament of claim 8 in which said non-plasticized vinyl acetate copolymer emulsion is present in said composition in an amount of about 5 weight percent, said polyvinyl acetate homopolymer is present in said composition in an amount of about 2.9 weight percent, said partial amide is present in said composition in an amount of about 0.04 weight percent and said anionic fatty acid long chain derivative is present in said composition in an amount of about 0.15 weight percent.
Claim 16
Dependent Claim
11 words
A sizing composition comprising the aqueous composition defined in claim 1.
Claim 17
Dependent Claim
12 words
A sizing composition comprising the aqueous composition defined in claim 15. A
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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) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |