Patent US4020048A successfully refreshed from Google Patents.
US4020048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tackifier for rubber
Assignee: Rohm and Haas Co
•
Filing: 1975-05-12
•
Granted: 1977-04-26
•
Expires: 1995-05-12
Abstract
Abstract The reaction of a predominantly monosubstituted phenol, an aldehyde, and an aliphatic or cycloaliphatic polyamine containing at least two primary amine groups, the reaction product, the use of the reaction product to impart building tack to a rubber stock, and a blend of rubber and said reaction product.
Inventors
- 👤 William H. Harrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:31
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08L; C08L21/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
52 words
A process comprising reacting about 0.7 to 1.3 mole parts lower alkyl aldehyde with about 0.50 to 0.95 mole parts of predominantly monosubstituted alkyl, alkoxy, or alkenyl phenol and about 0.50 to 0.05 mole parts of cycloaliphatic polyamine containing at least two primary amine groups in the presence of an acid catalyst.
Claim 2
Dependent Claim
52 words
A process comprising reacting about 0.7 to 1.3 mole parts lower alkyl aldehyde with about 0.50 to 0.95 mole parts of predominantly monosubstituted alkyl, alkoxy, or alkenyl phenol and about 0.50 to 0.05 mole parts of cycloaliphatic polyamine containing at least two primary amine groups in the presence of an acid catalyst.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the acid catalyst is oxalic acid.
Claim 4
Dependent Claim
9 words
The composition prepared by the process of claim 1.
Claim 5
Dependent Claim
11 words
The composition of claim 3 wherein the phenol is dodecyl phenol.
Claim 6
Dependent Claim
10 words
The composition of claim 3 wherein the aldehyde is formaldehyde.
Claim 7
Dependent Claim
54 words
The composition prepared by a process comprising reacting about 0.7 to 1.3 mole parts of lower alkyl aldehyde with about 0.50 to 0.95 mole parts of predominantly mono-substituted alkyl, alkoxy, or alkenyl phenol and about 0.50 to 0.05 mole parts of the cycloaliphatic polyamine, 1,8-p-menthane diamine, in the presence of oxalic acid as catalyst.
Claim 8
Dependent Claim
54 words
The composition prepared by a process comprising reacting about 0.7 to 1.3 mole parts of lower alkyl aldehyde with about 0.50 to 0.95 mole parts of predominantly mono-substituted alkyl, alkoxy, or alkenyl phenol and about 0.50 to 0.05 mole parts of the cycloaliphatic polyamine, 1,8-p-menthane diamine, in the presence of oxalic acid as catalyst.
Claim 9
Dependent Claim
18 words
The composition of claim 6 wherein the phenol is predominantly dodecyl phenol and the aldehyde is predominantly formaldehyde.
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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |