Patent US4146512A successfully refreshed from Google Patents.
US4146512A
Expired / Lapsed
US
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Modified phenolic tackifier
Assignee: Sherwin Williams Co
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Filing: 1977-08-29
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Granted: 1979-03-27
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Expires: 1997-08-29
Abstract
Abstract Tack is imparted to uncure elastomers by the inclusion of the product of the reaction between an alkylphenol-formaldehyde condensation product having methylol groups with di-2-hydroxyalkylamine or morpholine. In addition to imparting tack to the elastomer, the tackifier of this invention does not interfere with but tends to enhance the development of adhesion of the elastomer to reinforcing fibers.
Inventors
- 👤 Elsworth J. Weaver
- 👤 James N. Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:29
CPC Classifications
C; C08; C08L; C08L21/00; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08L61/00; C08L61/34
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
96 words
A method for improving tack and tack retention in uncured, vulcanizable elastomers while maintaining acceptable adhesion of the cured elastomer to reinforcing elements, comprising dispersing in said elastomer a tackifying compound of the structure ##STR4## where R is alkyl R 1 is ##STR5## where R 3 is alkyl or hydrogen, R 2 is R 1 or a mixture of R 1 with H or -- CHR 3 OH, or both, provided that when R 2 is a mixture, R 1 is the predominant constituent of the mixture, and where m plus n is at least 1.
Claim 2
Independent Claim
96 words
A method for improving tack and tack retention in uncured, vulcanizable elastomers while maintaining acceptable adhesion of the cured elastomer to reinforcing elements, comprising dispersing in said elastomer a tackifying compound of the structure ##STR4## where R is alkyl R 1 is ##STR5## where R 3 is alkyl or hydrogen, R 2 is R 1 or a mixture of R 1 with H or -- CHR 3 OH, or both, provided that when R 2 is a mixture, R 1 is the predominant constituent of the mixture, and where m plus n is at least 1.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein R is an alkyl group of 4 - 12 carbon atoms, and wherein R 3 is hydrogen.
Claim 4
Dependent Claim
9 words
The method of claim 2 wherein R is octyl.
Claim 5
Dependent Claim
21 words
The method of claim 3 wherein the tackifying compound has a softening point of between about 85° C. and 130° C.
Claim 6
Dependent Claim
20 words
The method of claim 3 wherein the tackifying compound has a softening point of between about 95° and 120° C.
Claim 7
Dependent Claim
20 words
The method of claim 5 wherein the tackifying compound has a free methylol content of less than 2 weight percent.
Claim 8
Independent Claim
101 words
A method for improving tack in uncured, vulcanizable elastomers while maintaining acceptable adhesion of the cured elastomers to reinforcing fibers comprising dispersing in said elastomers, a tackifying compound prepared by the reaction of a p-alkylphenol formaldehyde condensation product of the structure ##STR6## where R is alkyl, R 1 is -- CHR 3 OH, R 2 is R 1 or a mixture of R 1 with H, R 3 is H or lower alkyl, provided that when R 2 is a mixture, R 1 is the predominant constituent of the mixture, and where m plus n is at least 1, with di-2-hydroxyalkylamine.
Claim 9
Independent Claim
101 words
A method for improving tack in uncured, vulcanizable elastomers while maintaining acceptable adhesion of the cured elastomers to reinforcing fibers comprising dispersing in said elastomers, a tackifying compound prepared by the reaction of a p-alkylphenol formaldehyde condensation product of the structure ##STR6## where R is alkyl, R 1 is -- CHR 3 OH, R 2 is R 1 or a mixture of R 1 with H, R 3 is H or lower alkyl, provided that when R 2 is a mixture, R 1 is the predominant constituent of the mixture, and where m plus n is at least 1, with di-2-hydroxyalkylamine.
Claim 10
Dependent Claim
23 words
The method of claim 7 wherein R is octyl and wherein the softening point of said tackifying compound is between 90° and 120°.
Claim 11
Dependent Claim
35 words
The method of claim 8 wherein the tackifying resin contains a ratio of said p-octylphenol to formaldehyde of from 1-0.5 to 1-2.2, and a ratio of phenol to said di-2-hydroxyalkylamine of from 1-0.1 to 1-2.0.
Claim 12
Independent Claim
63 words
A method for improving tack in uncured, vulcanizable elastomers while maintaining acceptable adhesion of the cured elastomer to reinforcing fibers comprising dispersing in said elastomers a tackifying compound prepared by the reaction of p-alkylphenol-formaldehyde condensation product of structure. ##STR7## where R is alkyl, R 3 is H or lower alkyl, and where m plus n is at least 1, with formaldehyde and di-2-hydroxyalkylamine.
Claim 13
Independent Claim
63 words
A method for improving tack in uncured, vulcanizable elastomers while maintaining acceptable adhesion of the cured elastomer to reinforcing fibers comprising dispersing in said elastomers a tackifying compound prepared by the reaction of p-alkylphenol-formaldehyde condensation product of structure. ##STR7## where R is alkyl, R 3 is H or lower alkyl, and where m plus n is at least 1, with formaldehyde and di-2-hydroxyalkylamine.
Claim 14
Dependent Claim
26 words
The method of claim 10 wherein R is octyl, and where the softening point of said tackifying compound is between about 95° C. and 120° C.
Claim 15
Independent Claim
66 words
A method for improving tack in uncured vulcanizable elastomers while maintaining acceptable adhesion of the cured elastomer to reinforcing fibers comprising dispersing in said elastomers a tackifying conpound prepared by the reaction of a p-alkylphenol-formaldehyde condensation product of the structure: ##STR8## where R is alkyl, R 3 is H or lower alkyl with N - methyloldialkanol amine, and where m plus n is at least 1.
Claim 16
Independent Claim
66 words
A method for improving tack in uncured vulcanizable elastomers while maintaining acceptable adhesion of the cured elastomer to reinforcing fibers comprising dispersing in said elastomers a tackifying conpound prepared by the reaction of a p-alkylphenol-formaldehyde condensation product of the structure: ##STR8## where R is alkyl, R 3 is H or lower alkyl with N - methyloldialkanol amine, and where m plus n is at least 1.
Claim 17
Dependent Claim
121 words
A vulcanized rubber composition containing brass coated steel, polyester or poly aromatic amide reinforcing fibers comprising the vulcanization product of uncured natural or synthetic rubber or their mixtures, extender oil, carbon black, curative agents, and from 2-5 parts per hundred parts of rubber of a tackifying compound of the structure ##STR9## where R is alkyl, R 1 is CHR 3 - N - (CH 3 CHOHR 3 ) 2 , R 3 is alkyl or hydrogen, R 2 is R 1 or a mixture of R 1 with H or CHR 3 OH, or both, provided that when R 2 is a mixture, R 1 is the predominant constituent of the mixture, and where m plus n is at least 1.
Claim 18
Dependent Claim
121 words
A vulcanized rubber composition containing brass coated steel, polyester or poly aromatic amide reinforcing fibers comprising the vulcanization product of uncured natural or synthetic rubber or their mixtures, extender oil, carbon black, curative agents, and from 2-5 parts per hundred parts of rubber of a tackifying compound of the structure ##STR9## where R is alkyl, R 1 is CHR 3 - N - (CH 3 CHOHR 3 ) 2 , R 3 is alkyl or hydrogen, R 2 is R 1 or a mixture of R 1 with H or CHR 3 OH, or both, provided that when R 2 is a mixture, R 1 is the predominant constituent of the mixture, and where m plus n is at least 1.
Claim 19
Dependent Claim
30 words
The composition of claim 13 wherein R is octyl and where R 3 is hydrogen and where said tackifying resin has a softening point of 95° C. to 120° C.
Claim 20
Dependent Claim
35 words
The composition of claim 13 wherein R is octyl and where R 3 is hydrogen and where said tackifying resin is a liquid and has a viscosity at 35° C. of up to 1200 poises.
References Cited (Backward Citations)
US2649432A
Cited
US3001999A
Cited
US2997455A
Cited
US3173952A
Cited
US3462382A
Cited
US3962156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |