US3896253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding glass fibers to rubber
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1973-11-21
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Granted: 1975-07-22
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Expires: 1993-11-21
Abstract
Abstract An aqueous alkaline dispersion of a rubbery vinyl pyridine copolymer, a stabilized colloidal silica sol, and a heat reactable resorcinol-formaldehyde resole, in certain amounts, is useful in forming an adhesive for bonding glass fiber reinforcing elements or cords to rubber compounds or stocks. After dipping the glass fiber cord in the one-step adhesive dip, the coated cord is heated to dry it and heat cure or heat set the adhesive on the cord. Thereafter, the adhesive containing glass fiber cord is combined or laminated (calendered) with a curable rubber compound and the resulting assembly is cured to form a composite in which the glass fiber cord is bonded to the rubber by means of said adhesive.
Inventors
- 👤 Otto C Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:07
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/38; B29D30/40; C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; B29D2030/383; B29K; B29K2021/00; B29K2309/00; B29K2309/08; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2942; Y10T428/2945; Y10T428/2947; Y10T428/2964; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2107; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
128 words
A GLASS FIBER REINFORCING ELEMENT CONTAINING FROM ABOUT 10 TO 40% BY WEIGHT (DRY) BASED ON THE WEIGHT OF SAID ELEMENT OF A HEAT CURED ADHESIVE COMPOSITION USEFUL FOR ADHERING SAID ELEMENT TO A RUBBER COMPOUND AND CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF A RUBBERY VNYL PYRIDINE COPOLYMER, FROM ABOUT 0.5 TO 20 PARTS BY WEIGHT OF SILICA FROM A STABILIZED COLLOIDAL SILICA SOL IN WHICH THE PARTICLES OF SILICA HAVE AN AVERAGE PARTICLE DIAMETER OF FROM ABOUT TO 150 MILLIMICRONS, AND FROM ABOUT 10 TO 75 PARTS BY WEIGHT OF A WATER SOLUBLE, HEAT REACTABLE RESORCINOL-FORMALDEHYDE RESOLE HAVING HYDROXYL AD METHYLOL GROUPS, SAID RESOLE BEING MADE BY REACTING AN EXCESS OF FORMALDEHYDE WITH RESORCIONOL, SAID COMPOSITION COATING AND AT LEAST SUBSTANTIALLY TOTALLY IMPREGNATING SAID ELEMENT.
Claim 2
Dependent Claim
128 words
A GLASS FIBER REINFORCING ELEMENT CONTAINING FROM ABOUT 10 TO 40% BY WEIGHT (DRY) BASED ON THE WEIGHT OF SAID ELEMENT OF A HEAT CURED ADHESIVE COMPOSITION USEFUL FOR ADHERING SAID ELEMENT TO A RUBBER COMPOUND AND CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF A RUBBERY VNYL PYRIDINE COPOLYMER, FROM ABOUT 0.5 TO 20 PARTS BY WEIGHT OF SILICA FROM A STABILIZED COLLOIDAL SILICA SOL IN WHICH THE PARTICLES OF SILICA HAVE AN AVERAGE PARTICLE DIAMETER OF FROM ABOUT TO 150 MILLIMICRONS, AND FROM ABOUT 10 TO 75 PARTS BY WEIGHT OF A WATER SOLUBLE, HEAT REACTABLE RESORCINOL-FORMALDEHYDE RESOLE HAVING HYDROXYL AD METHYLOL GROUPS, SAID RESOLE BEING MADE BY REACTING AN EXCESS OF FORMALDEHYDE WITH RESORCIONOL, SAID COMPOSITION COATING AND AT LEAST SUBSTANTIALLY TOTALLY IMPREGNATING SAID ELEMENT.
Claim 3
Dependent Claim
48 words
A glass fiber reinforcing element according to claim 1 where said rubbery vinyl pyridine copolymer is a copolymer of from about 60 to 80% by weight of butadiene-1,3, from about 7 to 32% by weight of styrene, and from about 5 to 22% by weight of 2-vinyl pyridine.
Claim 4
Dependent Claim
48 words
A glass fiber reinforcing element according to claim 2 where said silica is used in an amount of from about 1.5 to 15 parts by weight and where the particles of said silica from said sol have an average particle diameter of from about 5 to 30 millimicrons.
Claim 5
Dependent Claim
27 words
A glass fiber reinforcing element according to claim 2 where said resorcinol-formaldehyde resole is used in an amount of from about 10 to 55 parts by weight.
Claim 6
Independent Claim
224 words
A METHOD FOR ADHERING A GLASS FIBER REINFORCING ELEMENT TO A RUBBER COMPOUND WHICH COMPRISES TREATING SAID ELEMENT WITH A OMPOSITION CONSISTING ESSENTIALLY OF AN AQUEOUS ALKALINE DISPERSION OF 100 PARTS BY WEIGHT OF A RUBBERY VINYL PYRIDINE COPOLYMER, FROM ABOUT 0.5 TO 20 PARTS BY WEIGHT OF SILICA IN THE FORM OF A STABILIZED COLLIDAL SILICA SOL IN WHICH THE PARTICLES OF ILICA HAVE AN AVERAGE PARTICLE DIAMETER OF FROM ABOUT 1 TO 150 MILLIMICRONS, FROM ABOUT 10 TO 75 PARTS BY WEIGHT OF A WATER SOLUBLE, HEAT REACTABLE RESORCINOL-FRMALDEHYDE RESOL HAVING HYDROXYL AND METHYLOL GROUPS, FROM ABOUT 0 TO 3 PARTS BY WEIGHT OF AN ALKALINE MATERIAL ELECTED FROM THE GROUP CONSISTING OF NH4OH,KOH AD NAOH, AND FROM ABOUT 150 TO 1100 PARTS BY WEIGHT OF WATER, HEATING SAID TREATED ELEMENT AT A TEMPERATURE AN FOR A TIME SUFFICIENT TO REMOVE ESSENTIALLY ALL OF THE WATER FROM SAID COMPOSITION AND TO PROVIDE SAID ELEMENT WITH A HEAT CURED ADHESIVE IN AN AMOUNT OF FROM ABOUT 10 TO 40% BY WEIGHT (DRY) BASED ON THE WEIGHT OF SAID REINFORCING ELEMENT, COMBINING SAID DREID AND HEAT CURED ADHESIVE CONTAINING REINFORCING ELEMENT WITH AN UNVULCANIZED VULCANIZABLE RUBBER COMPOUND, AND VULCANIZING THE SAME, SAID RESOLE BENG MADE BY REACTING AN EXCESS OF FORMALDEHYDE WITH RESORCINOL, SAID COMPOSITION COATING AND AT LEAST SUBSTANTIALLY TOTALLY IMPREGNATING SAID ELEMENT.
Claim 7
Independent Claim
224 words
A METHOD FOR ADHERING A GLASS FIBER REINFORCING ELEMENT TO A RUBBER COMPOUND WHICH COMPRISES TREATING SAID ELEMENT WITH A OMPOSITION CONSISTING ESSENTIALLY OF AN AQUEOUS ALKALINE DISPERSION OF 100 PARTS BY WEIGHT OF A RUBBERY VINYL PYRIDINE COPOLYMER, FROM ABOUT 0.5 TO 20 PARTS BY WEIGHT OF SILICA IN THE FORM OF A STABILIZED COLLIDAL SILICA SOL IN WHICH THE PARTICLES OF ILICA HAVE AN AVERAGE PARTICLE DIAMETER OF FROM ABOUT 1 TO 150 MILLIMICRONS, FROM ABOUT 10 TO 75 PARTS BY WEIGHT OF A WATER SOLUBLE, HEAT REACTABLE RESORCINOL-FRMALDEHYDE RESOL HAVING HYDROXYL AND METHYLOL GROUPS, FROM ABOUT 0 TO 3 PARTS BY WEIGHT OF AN ALKALINE MATERIAL ELECTED FROM THE GROUP CONSISTING OF NH4OH,KOH AD NAOH, AND FROM ABOUT 150 TO 1100 PARTS BY WEIGHT OF WATER, HEATING SAID TREATED ELEMENT AT A TEMPERATURE AN FOR A TIME SUFFICIENT TO REMOVE ESSENTIALLY ALL OF THE WATER FROM SAID COMPOSITION AND TO PROVIDE SAID ELEMENT WITH A HEAT CURED ADHESIVE IN AN AMOUNT OF FROM ABOUT 10 TO 40% BY WEIGHT (DRY) BASED ON THE WEIGHT OF SAID REINFORCING ELEMENT, COMBINING SAID DREID AND HEAT CURED ADHESIVE CONTAINING REINFORCING ELEMENT WITH AN UNVULCANIZED VULCANIZABLE RUBBER COMPOUND, AND VULCANIZING THE SAME, SAID RESOLE BENG MADE BY REACTING AN EXCESS OF FORMALDEHYDE WITH RESORCINOL, SAID COMPOSITION COATING AND AT LEAST SUBSTANTIALLY TOTALLY IMPREGNATING SAID ELEMENT.
Claim 8
Independent Claim
234 words
A method for adhering a glass fiber reinforcing element to a rubber compound which comprises treating said element with a composition consisting essentially of an aqueous alkaline dispersiOn of 100 parts by weight of a rubbery vinyl pyridine copolymer, from about 0.5 to 20 parts by weight of silica in the form of a stabilized colloidal silica sol in which the particles of the silica have an average particle diameter of from about 1 to 150 millimicrons, from about 10 to 75 parts by weight of a water soluble, heat reactable resorcinol-formaldehyde resole having hydroxyl and methylol groups, from about 0 to 3 parts by weight of an alkaline material selected from the group consisting of NH4OH, KOH and NaOH, and from about 150 to 1100 parts by weight of water, heating said treated element at a temperature of from about 200* to 550*F. for from about 5 to 300 seconds to remove essentially all of the water from said composition and to provide said element with a heat cured adhesive in an amount of from about 10 to 40% by weight (dry) based on the weight of said reinforcing element, combining said dried and heat cured adhesive containing reinforcing element with an unvulcanized vulcanizable rubber compound, and vulcanizing the same, said resole being made by reacting an excess of formaldehyde with resorcinol, said composition coating and at least substantially totally impregnating said element.
Claim 9
Independent Claim
234 words
A method for adhering a glass fiber reinforcing element to a rubber compound which comprises treating said element with a composition consisting essentially of an aqueous alkaline dispersiOn of 100 parts by weight of a rubbery vinyl pyridine copolymer, from about 0.5 to 20 parts by weight of silica in the form of a stabilized colloidal silica sol in which the particles of the silica have an average particle diameter of from about 1 to 150 millimicrons, from about 10 to 75 parts by weight of a water soluble, heat reactable resorcinol-formaldehyde resole having hydroxyl and methylol groups, from about 0 to 3 parts by weight of an alkaline material selected from the group consisting of NH4OH, KOH and NaOH, and from about 150 to 1100 parts by weight of water, heating said treated element at a temperature of from about 200* to 550*F. for from about 5 to 300 seconds to remove essentially all of the water from said composition and to provide said element with a heat cured adhesive in an amount of from about 10 to 40% by weight (dry) based on the weight of said reinforcing element, combining said dried and heat cured adhesive containing reinforcing element with an unvulcanized vulcanizable rubber compound, and vulcanizing the same, said resole being made by reacting an excess of formaldehyde with resorcinol, said composition coating and at least substantially totally impregnating said element.
Claim 10
Dependent Claim
45 words
A method according to claim 6 where said rubbery vinyl pyridine copolymer is a copolymer of from about 60 to 80% by weight of butadiene-1,3, from about 7 to 32% by weight of styrene, and from about 5 to 22% by weight of 2-vinyl pyridine.
Claim 11
Dependent Claim
44 words
A method according to claim 7 where said silica is used in an amount of from about 1.5 to 15 parts by weight and where the particles of silica from said sol have an average particle diameter of from about 5 to 30 millimicrons.
Claim 12
Dependent Claim
24 words
A method according to claim 7 where said resorcinol-formaldehyde resole is used in an amount of from about 10 to 55 parts by weight.
Claim 13
Dependent Claim
28 words
A method according to claim 7 where said treated element is heated at a temperature of from about 400* to 500*F. for from about 90 to 30 seconds.
Claim 14
Dependent Claim
9 words
The product produced by the method of claim 5.
Claim 15
Dependent Claim
143 words
A BONDED COMPOSITE MATERIAL COMPRISING A GLASS FIBER EEINFORCING ELEMENT EMBEDDED IN A VULCANIZED RUBBE, SAID ELEMENT CONTAINING FROM ABOUT 10 TO 40% BY WEIGHT (DRY) BASED ON THE WEIGHT OF SAID ELEMENT OF A HEAT CURED ADHESIVE COMPOSITION CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF A RUBBERY VINYL PYRIDINE COPOLYMER, FROM ABOUT 0.5 TO 20 PARTS BY WEIGHT OF SILICA FROM A STABILIZED COLLOIDAL SILICA SOL IN WHICH THE PARTICLES OF SILICA HAVE AN AVERAGE PARTICLE DIAMETER OF FROM ABOUT 1 TO 150 MILLIMICRONS, AND FROM ABOUT 10 TO 75 PARTS BY WEIGHT OF A WATER SOLUBLE, HEAT REACTABLE RESORCIONOLFORMALDEHYDE RESOLE HAVING HYDROXYL AND METHYLOL GROUPS AND SAID COMPOSITION FORMING A BOND BETWEEN SAID ELEMENT AND SAID RUBBER, SAID RESOLE BEING MADE BY REACTING AN EXCESS OF FORMALDEHYDE WITH RESORCINOL, SAID COMPOSITION COATING AND AT LEAST SUBSTANTIALLY TOTALLY IMPREGNATING SAID ELEMENT.
Claim 16
Dependent Claim
143 words
A BONDED COMPOSITE MATERIAL COMPRISING A GLASS FIBER EEINFORCING ELEMENT EMBEDDED IN A VULCANIZED RUBBE, SAID ELEMENT CONTAINING FROM ABOUT 10 TO 40% BY WEIGHT (DRY) BASED ON THE WEIGHT OF SAID ELEMENT OF A HEAT CURED ADHESIVE COMPOSITION CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF A RUBBERY VINYL PYRIDINE COPOLYMER, FROM ABOUT 0.5 TO 20 PARTS BY WEIGHT OF SILICA FROM A STABILIZED COLLOIDAL SILICA SOL IN WHICH THE PARTICLES OF SILICA HAVE AN AVERAGE PARTICLE DIAMETER OF FROM ABOUT 1 TO 150 MILLIMICRONS, AND FROM ABOUT 10 TO 75 PARTS BY WEIGHT OF A WATER SOLUBLE, HEAT REACTABLE RESORCIONOLFORMALDEHYDE RESOLE HAVING HYDROXYL AND METHYLOL GROUPS AND SAID COMPOSITION FORMING A BOND BETWEEN SAID ELEMENT AND SAID RUBBER, SAID RESOLE BEING MADE BY REACTING AN EXCESS OF FORMALDEHYDE WITH RESORCINOL, SAID COMPOSITION COATING AND AT LEAST SUBSTANTIALLY TOTALLY IMPREGNATING SAID ELEMENT.
Claim 17
Dependent Claim
47 words
A bonded composite material according to claim 12 where said rubbery vinyl pyridine copolymer is a copolymer of from about 60 to 80% by weight of butadiene-1,3, from about 7 to 32% by weight of styrene, and from about 5 to 22% by weight of 2-vinyl pyridine.
Claim 18
Dependent Claim
46 words
A bonded composite material according to claim 13 where said silica is used in an amount of from about 1.5 to 15 parts by weight and where the particles of silica from said sol have an average particle diameter of from about 5 to 30 millimicrons.
Claim 19
Dependent Claim
26 words
A bonded composite material according to claim 13 where said resorcinol-formaldehyde resole is used in an amount of from about 10 to 55 parts by weight.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |