Process for production of an alkoxylated product
The invention relates to a process for preparing an alkoxylated product. The aim of the invention is to provide aromatic polyols for preparing polyurethane-based and polyisocyanurate-based polymers, which ensure good miscibility with the isocyanate component and other components, have a good storage stability and render the end product flameproof. For this purpose, the invention devises a process for preparing an alkoxylated product by. reacting bisphenol F with propylene carbonate and/or propylene oxide as propoxylation agent and ethylene carbonate and/or ethylene oxide as ethoxylation agent, the propoxylation agent and the ethoxylation agent being used in a molar ration of 70:30 to 45:55.
1. A process for making an alkoxylated product; comprising:
reacting bisphenol F, a propoxylating agent comprising propylene carbonate and/or propylene oxide and an ethoxylating agent comprising ethylene carbonate and/or ethylene oxide at conditions sufficient to produce an alkoxylated bisphenol F product,
wherein the propoxylating agent and the ethoxylating agent have a molar ratio of 70:30 to 45:55.
2. The process of claim 1 , wherein based on one mol of bisphenol F 1.6 mol to 0.9 mol of propoxylating agent and 1.6 mol to 0.9 mol of ethoxylating agent are used.
3. The process of claim 2 , wherein the reaction is based on one mol of bisphenol F, 1.3 mol to 1 mol of propoxylating agent, and 1.3 mol to 1.0 mol of ethoxylating agent.
4. The process of claim 3 , wherein the molar ratio between bisphenol F:propoxylating agent:ethoxylating agent is essentially equal to 1:1:1.
5. The process of claim 1 wherein the propoxylating agent comprises propylene carbonate.
6. The process of claim 1 wherein the ethoxylating agent comprises-ethylene carbonate.
7. The process of claim 1 wherein the reaction is effected in an alkaline medium at temperatures of 120° C. to 200° C.
8. The process of claim 1 wherein the addition of propylene carbonate and ethylene carbonate is effected at different times.