US4263082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage stable polyolefin compatible non-crosslinking size for fiber glass strands
Assignee: PPG Industries Inc
•
Filing: 1980-01-29
•
Granted: 1981-04-21
•
Expires: 2000-01-29
Abstract
Abstract Continuous glass fiber with a polyolefin compatible sizing composed of a coupling agent, a stabilizer, a lubricant, a non-crosslinking film forming polymer, softening agent and surfactant are disclosed for utilization in polyolefin polymer reinforcement. The article formed and formation method for fiber combination with a polyolefin polymer are also disclosed.
Inventors
- 👤 Chester S. Temple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:07
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T442/00; Y10T442/60; Y10T442/69; Y10T442/691
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
A method of forming a composite article comprising bringing together polyolefin polymer and sized glass strand mat and applying pressure wherein said sized glass strand has been impregnated with an aqueous sizing consisting essentially of: the aqueous carrier, coupling agent, surfactant, softener, cis-butenedioic acid stabilizer, modified polypropylene lubricant and a non-crosslinkable vinyl acetate homopolymer film forming polymer.
Claim 2
Independent Claim
57 words
A method of forming a composite article comprising bringing together polyolefin polymer and sized glass strand mat and applying pressure wherein said sized glass strand has been impregnated with an aqueous sizing consisting essentially of: the aqueous carrier, coupling agent, surfactant, softener, cis-butenedioic acid stabilizer, modified polypropylene lubricant and a non-crosslinkable vinyl acetate homopolymer film forming polymer.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein said surfactant is selected from the group consisting essentially of condensates of propylene oxide and propylene glycol.
Claim 4
Dependent Claim
22 words
The method of claim 1 wherein said polyolefin polymer is selected from the group comprising polyethylene, polypropylene higher analogs and mixtures thereof.
Claim 5
Dependent Claim
21 words
The method of claim 1 wherein said glass strands comprise about 10 to about 60 percent by weight of said article.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein said coupling agent is selected from the group consisting of silanes and siloxanes.
Claim 7
Dependent Claim
12 words
The method of claim 1 wherein said coupling agent is an aminosilane.
Claim 8
Dependent Claim
12 words
The method of claim 1 wherein said polyolefin polymer comprises polyethylene polymer.
Claim 9
Dependent Claim
11 words
The method of claim 1 wherein said polyolefin polymer comprises polypropylene.
Claim 10
Dependent Claim
114 words
The method of claim 1 wherein said coupling agent comprises between about 2 and about 30 percent by weight of said sizing, said stabilizer comprises between about 1 and about 15 percent by weight of said sizing, said lubricant comprises between 10 and about 50 percent by weight of said sizing, said non-crosslinkable polymer comprises between about 20 and about 60 percent by weight of said sizing, said softener comprises between about 0.2 and about 1 percent by weight of said sizing, said surfactant comprises between about 0.1 and about 5 percent by weight of said sizing and said polyolefin polymer comprises between about 90 and about 50 percent by weight of said article.
Claim 11
Dependent Claim
68 words
The method of claim 1 wherein said coupling agent comprises between about 5 and about 12 percent of said sizing, said stabilizer comprises between about 2.5 and about 5 percent by weight of said sizing, said non-crosslinkable polymer comprises between about 35 and about 40 percent by weight of said sizing and said polyolefin polymer comprises between about 70 and about 50 percent by weight of said article.
Claim 12
Dependent Claim
18 words
The method of claim 1 wherein said softener is selected from the group consisting essentially of polyethylenimine derivatives.
References Cited (Backward Citations)
DE1494899C
Cited
US2563288A
Cited
DE1619135U
Cited
US2993872A
Cited
US3090701A
Cited
US3143405A
Cited
US3437550A
Cited
BE725802A
Cited
US3655353A
Cited
US3849148A
Cited
US3882068A
Cited
US3920596A
Cited
US4104434A
Cited
US3997306A
Cited
DE2659370A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |