Claims
- 1. An oil-soluble high molecular weight Mannich product from the condensation of reactants:
- 1. a high molecular weight alkyl-substituted phenol wherein said alkyl-substituent has an average number of carbon atoms of from 50 to 20,000 carbon atoms;
- 2. an amine havng the formula: ##EQU1## wherein x is an integer from 1 to 10 and A is a divalent saturated hydrocarbon group having 2 to 3 carbon atoms; and
- 3. a formaldehyde affording reactant wherein the respective reactant molar ratio is 1.0:0.7- 1.0:1.5- 2.1 prepared by combining reactants (1) and (2), adding thereto reactant (3) and heating the resulting mixture to a temperature in the range of 100.degree.-350.degree. F under conditions which remove by-product water.
- 2. The oil-soluble Mannich product of claim 1 wherein the alkyl-substituent of reactant (1) is polypropyl or polybutyl of 700 to 2500 M.sub.n and wherein the mixture of reactants (1) and (2) and two-thirds of reactant (3) is heated to a temperature in the range of 130-300.degree. F until the resulting mixture is dehydrated and thereafter adding the remainder of reactant (3) and heating this mixture to a temperature of from 250-350.degree. F until this mixture is dehydrated.
- 3. The oil-soluble Mannich product of claim 1 wherein reactant (1) is 1713 M.sub.n polybutylphenol; in reactant (2) A is --CH.sub.2 --CH.sub.2 -- and x is 4; reactant (3) is formaldehyde; and the respective reactant molar ratio is 1.0:1.0:2.0 prepared by combining reactants (1) and (2), adding thereto one-half of reactant (3) at 180.degree. F and heating the mixture to a temperature of 320.degree. F under conditions which remove by-product water, cooling the water-free reaction mixture to a temperature of 180.degree. F, adding thereto the remaining one-half of reactant (3), and heating the resulting mixture to a temperature of 320.degree. F under conditions which remove by-product water.
RELATED APPLICATIONS
This is a division, of application Ser. No. 284,222, filed Aug. 28, 1972, now abandoned, which is a division of application Ser. No. 798,102 filed Feb. 10, 1969, now U.S. Pat. No. 3,798,165, which is a continuation-in-part of our copending application Ser. No. 502,368, filed Oct. 22, 1965 now U.S. Pat. No. 3,539,633.
US Referenced Citations (16)
Divisions (2)
|
Number |
Date |
Country |
Parent |
284222 |
Aug 1972 |
|
Parent |
798102 |
Feb 1969 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
502368 |
Oct 1965 |
|