Patent US4413085A successfully refreshed from Google Patents.
US4413085A
Expired / Lapsed
US
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Storage stable polyolefin compatible non-crosslinking size for fiber glass strands
Assignee: PPG Industries Inc
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Filing: 1981-12-10
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Granted: 1983-11-01
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Expires: 2001-12-10
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 09:33
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/28; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08K9/00; C08K9/04; C08K9/06; C08J2323/00; C08J2323/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2962
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
An aqueous sizing composition to provide storage, stable glass fiber strands, consisting essentially of: coupling agents, surfactant, softener, ethylenically unsaturated carboxylic acid or anhydride stabilizer in an amount of about 1 to about 15 percent by weight of the solids of the sizing composition, a maleonated or acrylic modified polypropylene lubricant, and a non-crosslinkable homopolymer film forming polymer selected from the group consisting of epoxies, polyesters, polyurethanes, polyvinyl acetates, polyvinyl alcohols and acrylics, and water in an amount of about 80 to about 99 percent of the aqueous composition.
Claim 2
Dependent Claim
89 words
An aqueous sizing composition to provide storage, stable glass fiber strands, consisting essentially of: coupling agents, surfactant, softener, ethylenically unsaturated carboxylic acid or anhydride stabilizer in an amount of about 1 to about 15 percent by weight of the solids of the sizing composition, a maleonated or acrylic modified polypropylene lubricant, and a non-crosslinkable homopolymer film forming polymer selected from the group consisting of epoxies, polyesters, polyurethanes, polyvinyl acetates, polyvinyl alcohols and acrylics, and water in an amount of about 80 to about 99 percent of the aqueous composition.
Claim 3
Dependent Claim
21 words
The aqueous sizing composition of claim 1, wherein said coupling agent is selected from the group consisting of silanes and siloxanes.
Claim 4
Dependent Claim
14 words
The aqueous sizing composition of claim 1, wherein said coupling agent is an aminosilane.
Claim 5
Dependent Claim
133 words
The aqueous sizing composition of claim 1, wherein said coupling agent comprises between about 2 and about 30 percent by weight of the solids of the aqueous sizing, said stabilizer comprises between about 1 and about 15 percent by weight of the solids of said sizing, said maleonated or acrylic modified polypropylene lubricant comprises between 10 and about 50 percent by weight of the solids of said sizing, said non-crosslinkable polymer comprises between about 20 and 60 percent of the solids of said sizing, said softener comprises between about 0.2 to about 1 percent of the solids of said sizing, and said surfactant comprises between about 0.1 and about 5 percent by weight of the solids of said sizing, and water comprises about 80 to about 99 percent by weight of said sizing.
Claim 6
Dependent Claim
124 words
The aqueous sizing composition of claim 1, wherein said coupling agent comprises between about 5 and about 12 percent of the solids of said sizing, said stabilizer comprises between about 2.5 to about 6 percent of the solids of said sizing, said lubricant comprises between about 10 and about 50 percent by weight of the solids of said sizing, said non-crosslinkable polymer comprises between about 35 and about 40 percent by weight of the solids of said sizing, said softener comprises between 0.2 and about 1 percent by weight of the solids of said sizing, and said surfactant comprises between 0.1 and about 5 percent of the solids of said sizing and water comprises about 92 to 96 parts by weight of said sizing.
Claim 7
Dependent Claim
19 words
The aqueous sizing composition of claim 1, wherein said softener is selected from the group consisting of polyethylenimine derivatives.
Claim 8
Dependent Claim
24 words
The aqueous sizing composition of claim 1, wherein said surfactant is selected from the group consisting of condensates of propylene oxide and propylene glycol.
Claim 9
Dependent Claim
19 words
The aqueous sizing composition of claim 1, wherein said ethylenically unsaturated carboxylic acid stabilizer is cis-butenedioic acid or anhydride.
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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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |