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Patent US3887389A successfully refreshed from Google Patents.
US3887389A
Expired / Lapsed
US
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Fiber glass sizing for use in tire cord manufacturing
Assignee: PPG Industries Inc
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Filing: 1973-01-26
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Granted: 1975-06-03
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Expires: 1993-01-26
Abstract
Abstract An improved textile forming size for glass fibers utilized in the preparation of rubber coated glass fiber tire cord is described in which a starch based forming size has incorporated therein a nonionic wetting agent, a silane coupling agent and a paraffinic or microcrystalline wax. The use of this forming size on glass fibers which are subsequently coated with elastomer for use as tire cord results in a tire cord having improved flex fatigue properties.
Inventors
- 👤 Jerry C Hedden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:56
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/32; C03C25/321; C08; C08K; C08K5/00; C08K5/54; C08L; C08L3/00; C08L3/02; C08L3/04; C08L83/00; C08L91/00; C08L91/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
127 words
A GLASS FIBER FORMING SIZE, USEFUL FOR SIZING GLASS FIBERS WHICH REINFORCE ELASTOMERS TO PROVIDE IMPROVED FLEX FATIGUE RESISTANCE CONSISTING ESSENTIALLY OF: AN AQUEOUS STARCH MIXTURE CONSISTING ESSENTIALLY; 45 TO 55 PERCENT BY WEIGHT OF A HIGH AMYLOSE STARCH COMPONENT HAVING AN AMYLOSE CONTENT OF ABOUT 50 TO ABOUT 60 PERCENT BY WEIGHT, AND ABOUT 45 TO 55 PERCENT BY WEIGHT OF A WATER-REPELLENT LOW AMYLOSE STRACH COMPONENT HAVING CROSSLINKS THEREIN, HAVING AN AMYLOSE CONTENT OF ABOUT 20 TO 30 PERCENT BY WEIGHT; 0.5 TO 3 PERCENT BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF A PARAFFIN WAX AND A MICROCRYSTALLINE WAX; 0.4 TO 1% BY WEIGHT OF A SILANE COUPLING AGENT; AND ABOUT 0.75 TO 1.25 PERCENT BY WEIGHT OF A NON-IONIC WETTING AGENT.
Claim 2
Dependent Claim
127 words
A GLASS FIBER FORMING SIZE, USEFUL FOR SIZING GLASS FIBERS WHICH REINFORCE ELASTOMERS TO PROVIDE IMPROVED FLEX FATIGUE RESISTANCE CONSISTING ESSENTIALLY OF: AN AQUEOUS STARCH MIXTURE CONSISTING ESSENTIALLY; 45 TO 55 PERCENT BY WEIGHT OF A HIGH AMYLOSE STARCH COMPONENT HAVING AN AMYLOSE CONTENT OF ABOUT 50 TO ABOUT 60 PERCENT BY WEIGHT, AND ABOUT 45 TO 55 PERCENT BY WEIGHT OF A WATER-REPELLENT LOW AMYLOSE STRACH COMPONENT HAVING CROSSLINKS THEREIN, HAVING AN AMYLOSE CONTENT OF ABOUT 20 TO 30 PERCENT BY WEIGHT; 0.5 TO 3 PERCENT BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF A PARAFFIN WAX AND A MICROCRYSTALLINE WAX; 0.4 TO 1% BY WEIGHT OF A SILANE COUPLING AGENT; AND ABOUT 0.75 TO 1.25 PERCENT BY WEIGHT OF A NON-IONIC WETTING AGENT.
Claim 3
Dependent Claim
127 words
A glass fiber forming size, useful for sizing glass fibers which reinforce elastomers to provide improved flex fatigue resistance, consisting essentially of: an aqueous starch mixture consisting essentially of; 45 to 55 percent by weight of a high amylose starch component having an amylose content of about 50 to about 60 percent by weight, and 45 to 55 percent by weight of a water-repellent low amylose starch component having crosslinks therein, having an amylose content of about 20 to 30 percent by weight; 0.5 to 3 percent by weight of a member of the group consisting of a paraffin wax and a microcrystalline wax; 0.4 to 1% by weight of a silane coupling agent; and about 0.75 to 1.25 percent by weight of a non-ionic wetting agent.
Claim 4
Dependent Claim
127 words
A glass fiber forming size, useful for sizing glass fibers which reinforce elastomers to provide improved flex fatigue resistance, consisting essentially of: an aqueous starch mixture consisting essentially of; 45 to 55 percent by weight of a high amylose starch component having an amylose content of about 50 to about 60 percent by weight, and 45 to 55 percent by weight of a water-repellent low amylose starch component having crosslinks therein, having an amylose content of about 20 to 30 percent by weight; 0.5 to 3 percent by weight of a member of the group consisting of a paraffin wax and a microcrystalline wax; 0.4 to 1% by weight of a silane coupling agent; and about 0.75 to 1.25 percent by weight of a non-ionic wetting agent.
Claim 5
Dependent Claim
34 words
The forming size of claim 1 wherein said wax constituent is present from 1.0 to 1.5 percent by weight and said non-ionic wetting agent is present at about 0.8 to 1 percent by weight.
Claim 6
Dependent Claim
13 words
The size of claim 1 wherein the coupling agent is an amino silane.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |