Claims
- 1. A process for producing a carbohydrate-phenolic resol resin which comprises the steps of:
- a. reacting in the presence of an acid catalyst the following ingredients:
- 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 liquid resin wherein the water produced in condensation is less than about 5 moles per mole of aldose; and
- b. reacting said liquid resin with a lower aliphatic aldehyde in the presence of a basic catalyst to form said resol resin.
- 2. A process as defined in claim 1 wherein the aldose saccharide is a hexose.
- 3. A process as defined in claim 1 wherein the phenolic compound is phenol.
- 4. A process as defined in claim 1 wherein the aldose saccharide is derived from starch.
- 5. A process as defined in claim 1 wherein the phenolic compound is employed in an amount within the range of 0.1 to 1.5 moles of phenolic compound for each mole of aldose unit.
- 6. A process as defined in claim 1 wherein the urea is employed in an amount from 0.1 to 5 moles of urea for each mole of aldose unit.
- 7. A process as defined in claim 1 wherein the aliphatic aldehyde is employed in an amount ranging from about 2 moles to about 4 moles for each mole of phenol.
- 8. A process as defined in claim 1 wherein the acid catalyst is a strong mineral acid.
- 9. A process as defined in claim 1 wherein the alkaline catalyst is calcium hydroxide.
- 10. A process as defined in claim 1 wherein the aliphatic aldehyde is formaldehyde.
- 11. A carbohydrate-phenolic resol resin produced by the process defined in claim 1.
- 12. A process as defined in claim 1 wherein the aldose saccharide is reacted with urea prior to contact with the phenolic compound.
Parent Case Info
This application is a continuation-in-part of U.S. Serial No. 707,600 filed July 22, 1976, and now patent No. 4,048,127 issued Sept. 13, 1977.
US Referenced Citations (7)
Non-Patent Literature Citations (1)
Entry |
Chem. Absts., vol. 81 : 79466k, "Electroplate Coating," Akerblom. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
707600 |
Jul 1976 |
|