Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Process of treating scrap or waste product containing solid...
Patent
1999-03-31
2000-10-17
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Process of treating scrap or waste product containing solid...
521 48, 521131, 521172, 521173, 525437, 528272, 528495, 528496, C08J 1104, C08J 914
Patent
active
061333298
ABSTRACT:
Methods of making aromatic polyester polyols that are suitable for use with hydrocarbon and hydrofluorocarbon blowing agents. The polyols are made by reacting polyethylene terephthalate, dissolved in a solution comprising a plurality of glycols, with a natural oil. The natural oil reacts into the polyol backbone at a specific temperature. Aromatic polyester polyols that are suitable for use with hydrocarbon and hydrofluorocarbon blowing agents. The polyols are made from polyethylene terephthalate and a natural oil. The polyols exhibit low hydroxyl numbers and low viscosities, and hydrocarbons and hydrofluorocarbons blowing agents are soluble in these polyols. A method for making foam using the polyols of the present invention. The method includes reacting a polyol of the present invention, mixed with other polyol components, with an isocyanate component.
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DeLeon Alberto
Shieh David J.
Foelak Morton
Headley Tim
Oxid L.P.
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