Carbohydrate-based condensation resin
AssigneeCPC International Inc.
InventorsJohn P. Gibbons, Lawrence Wondolowski
Life of this patent
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Abstract
A carbohydrate-phenolic resin and a process for production of same wherein an aldose saccharide, preferably a hexose, is reacted with a phenolic compound and urea in the presence of an acid catalyst to form a solid fusible resin which is curable with cross linking agents, such as hexamethylenetetramine. Instead of urea, use can also be made of diamines, such as toluene diamines and alkylene diamines.
Claims23
A process for producing a carbohydrate-phenolic resin comprising reacting in the presence of an acid catalyst
- 1. an aldose saccharide;
- 2. a phenolic compound having the formula ##STR7## wherein R is selected from the group consisting of C.sub.1 to C.sub.3 alkyl, C.sub.1 to C.sub.3 alkoxy, halogen, hydroxy and hydrogen;
- and
- 3. urea;
- to form a solid, fusible resin, and separating the resin from the reaction mixture.
A process for producing a carbohydrate-phenolic resin comprising reacting in the presence of an acid catalyst
- 1. an aldose saccharide;
- 2. a phenolic compound having the formula ##STR8## wherein R is selected from the group consisting of C.sub.1 to C.sub.3 alkyl, C.sub.1 to C.sub.3 alkoxy, halogen, hydroxy and hydrogen;
- and
- 3. a polyfunctional amine having the formula:
- H.sub.2 N -- R -- NH.sub.2
- wherein R is a divalent organic group;
- to form a solid, fusible resin, and separating the resin from the reaction mixture.
A process for producing a carbohydrate-phenolic resin comprising reacting urea or a diamine with a carbohydrate in the presence of an acid catalyst to yield a nitrogenous intermediate product, reacting the intermediate product with a phenolic compound to form a solid fusible resin, and separating the resin from the reaction mixture.
Dependencies are inferred from the claim text.