US4040999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pollution free method of making phenol formaldehyde resole tire cord dip and product
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1976-06-03
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Granted: 1977-08-09
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Expires: 1996-06-03
Abstract
Abstract Phenol formaldehyde resole is made by a low catalyst level process which eliminates the need to isolate the resin from the reaction mixture. The resole is blended with a vinyl pyridine latex and a resorcinol based curing agent and is used as a cord dip. The vinyl pyridine latex may be a latex blend. The dipped cord is used as reinforcement in rubber tires.
Inventors
- 👤 Edward Florent Kalafus
- 👤 Satish Chander Sharma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:21
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/24; C08L; C08L61/00; C08L61/04; C08L61/06; C08L61/12; C08J2321/00; C08L39/00; C08L39/04; C08L39/08; C08L9/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
72 words
A process for making a cord dip containing a phenol formaldehyde resin which comprises: A. reacting in the presence of 0.01 to 0.8 moles of a base catalyst 1. one mole of phenol with 2. from about 1.0 to 4.0 moles of formaldehyde to form a reaction mixture containing phenol formaldehyde resin. B. without separating the phenol formaldehyde resin from the reaction mixture adding based on the following ingredients by dry weight
Claim 2
Dependent Claim
72 words
A process for making a cord dip containing a phenol formaldehyde resin which comprises: A. reacting in the presence of 0.01 to 0.8 moles of a base catalyst 1. one mole of phenol with 2. from about 1.0 to 4.0 moles of formaldehyde to form a reaction mixture containing phenol formaldehyde resin. B. without separating the phenol formaldehyde resin from the reaction mixture adding based on the following ingredients by dry weight
Claim 3
Dependent Claim
46 words
a minor amount of a curing agent selected from the group consisting of resorcinol and resorcinol formaldehyde resin and 2. a major amount of an alkaline dispersion of a rubbery vinyl pyridine 1,3-butadiene copolymer in which copolymer the vinyl pyridine is present as a minor component.
Claim 4
Dependent Claim
46 words
a minor amount of a curing agent selected from the group consisting of resorcinol and resorcinol formaldehyde resin and 2. a major amount of an alkaline dispersion of a rubbery vinyl pyridine 1,3-butadiene copolymer in which copolymer the vinyl pyridine is present as a minor component.
Claim 5
Dependent Claim
30 words
The process of claim 1 wherein the ratio of vinyl pyridine copolymer to the mixture of phenol formaldehyde resole and curing agent has a value of from 100:5 to 100:75.
Claim 6
Dependent Claim
30 words
The process of claim 1 wherein the ratio of vinyl pyridine copolymer to the mixture of phenol formaldehyde resole and curing agent has a value of from 100:10 to 100:35.
Claim 7
Dependent Claim
22 words
The process of claim 3 wherein the ratio of phenol formaldehyde to curing agent has a value of from 1:1 to 6:1.
Claim 8
Dependent Claim
22 words
The process of claim 3 wherein the ratio of phenol formaldehyde to curing agent has a value of from 1:1 to 3:1.
Claim 9
Dependent Claim
20 words
The process of claim 1 wherein from 0.0375 to 0.15 moles of base catalyst are used per mole of phenol.
Claim 10
Dependent Claim
25 words
The process of claim 1 wherein the ratio of phenol to formaldehyde in the phenol formaldehyde resin has a value of from 1:1.5 to 1:3.
Claim 11
Dependent Claim
17 words
The process of claim 1 wherein the vinyl pyridine latex is a blend containing styrene butadiene latex.
Claim 12
Dependent Claim
24 words
The process of claim 8 wherein the ratio of vinyl pyridine latex to styrene butadiene latex has a value of from 3:1 to 1:3.
Claim 13
Dependent Claim
18 words
The process of claim 9 wherein the total vinyl pyridine content of the blend is as least 3%.
Claim 14
Dependent Claim
20 words
The process of claim 1 wherein the curing agent is selected from the class consisting of resorcinol and resorcinol formaldehyde.
Claim 15
Dependent Claim
14 words
The process of claim 1 wherein the curing agent is a resorcinol formaldehyde novolak.
Claim 16
Dependent Claim
9 words
A composition produced by the method of claim 1.
References Cited (Backward Citations)
US3888805A
Cited
US3930095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |