Claims
- 1. A polyurethane containing silica filler, comprising:the reaction product of a natural oil-based polyol component and an isocyanate, wherein said polyol is made by hydroxylating epoxidized natural oil with a catalytic amount of fluoboric acid, an alcohol, and water with the amount of water being about 10% to 30% by weight of all the components and wherein said natural oil-based polyol component is comprised of silica and a natural oil-based polyol in at least about a 2:1 weight ratio.
- 2. The polyurethane of claim 1, further comprising the mixture of:a drying agent; and an antifoaming agent.
- 3. A method for making a filled polyurethane, comprising:hydroxylating epoxidized natural oil with a catalytic amount of fluoboric acid, an alcohol, and water to form a natural oil-based polyol, wherein said water is about 10% to 30% by weight of all the components; mixing said natural oil-based polyol, a drying agent, and an antifoaming agent together to form a polyol component; drying said polyol component; mixing dried filler with said polyol component to form a mixture; and adding an isocyanate to said mixture wherein said natural oil-based polyol and said isocyanate react to form a filled polyurethane.
- 4. The method claim 3, wherein said filler is silica.
- 5. The method of claim 3, wherein said isocyanate component is added to said mixture by stirring said isocyanate component with said mixture in the presence of nitrogen.
- 6. An electroinsulating component, comprising:a polyurethane created by reacting a natural oil-based polyol with an isocyanate wherein said polyurethane is used as an electroinsulating component, wherein said natural oil-based polyol is made from epoxidized natural oil, a catalytic amount of fluoboric acid, alcohol, and water with the amount of water being between about 10 to 30% by weight of all the components.
- 7. The electroinsulating component of claim 6, further comprising:a filler, wherein said filler is mixed with said natural oil-based polyol before said polyol is reacted with said isocyanate.
- 8. The electroinsulating component of claim 6, wherein said electroinsulating component is a cable connector.
- 9. The electroinsulating component of claim 6, wherein said electroinsulating component is a dry transformer.
- 10. The electroinsulating component of claim 6, wherein said electroinsulating component can be used in the electronic industry for encapsulation, potting, embedding, or casting.
- 11. A method for making an electroinsulating component, comprising:hydroxylating epoxidized natural oil with a catalytic amount of fluoboric acid, an alcohol, and water to form a natural oil-based polyol, wherein the amount of water is between about 10% and 30% by weight of all the components; reacting said natural oil-based polyol with an isocyanate to form a polyurethane; and pouring said polyurethane into a mold so as to form an electroinsulating component.
- 12. The method of claims 11, wherein said natural oil-based polyol is mixed with a filler before being reacted with said isocyanate.
CROSS REFERENCE TO RELATED APPLICATIONS
This application now is a division of Ser. 09/612,716 filed Jul. 10, 2000 now U.S. Pat. No. 6,433,121 which is a C-I-P from application Ser. No. 09/187,992, filed Nov. 6, 1998, now U.S. Pat. No. 6,107,433.
STATEMENT REGARDING FEDERALLY-SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable.
US Referenced Citations (10)
Foreign Referenced Citations (3)
Number |
Date |
Country |
39 43 080 |
Jul 1991 |
DE |
41 15 146 |
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DE |
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Non-Patent Literature Citations (1)
Entry |
Scholnick et al., “Urethane Foams from Animal Fats, IV. Rigid Foams from Epoxidased Glycerides,” Journal of the American Oil Chemists' Society, vol. 45, pp. 76-77, 1968. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
09/187992 |
Nov 1998 |
US |
Child |
09/612716 |
|
US |