| 21. | In 1979, the first polyurethane foam version of the product was produced by Spirit Industries.
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| 22. | This two step reaction is used in what is commonly but improperly called polyurethane foams.
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| 23. | Those can be filled with fiberglass or expanding polyurethane foam sold in most hardware stores.
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| 24. | It is used as a catalyst for the formation of polyurethane foams and epoxy resins.
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| 25. | However, materials like polyurethane foam are susceptible to water absorption and performance degradation as well.
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| 26. | The space between the outer tank and the inner tank is isolated with polyurethane foam.
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| 27. | APP is also applied to flame retard polyurethane foams.
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| 28. | In 2007, lignin extracted from shrubby willow was successfully used to produce expanded polyurethane foam.
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| 29. | Mr Thomas had urged the government to ban all polyurethane foam and regulate its use.
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| 30. | Others, like polyurethane foams used in car interiors and shoes, are generally accepted as specialties.
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