Composition comprising semi-crystalline polyolefin and sulfonyl-azide, resulting foams and methods of making the same
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United States of America Patent
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Jun 2, 2020
Grant Date -
Aug 4, 2016
app pub date -
Jan 29, 2016
filing date -
Jan 30, 2015
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Abstract
A foamable composition includes a semi-crystalline polyolefin having a crystallinity of at least 50% and a poly(sulfonyl azide) of at least 500 ppm based on the total weight of the foamable composition. The foamable composition has a melt strength of at least 20 cN, a melt drawability of at least 100 mm/s, flexural modulus is greater than about 240,000 psi. Such a composition can be used to make a low density foam having a density in the range from 0.005 g/cm3 to 0.6 g/cm3. A resulting foam or a fabricated article, the methods of the composition and the foam are also provided.
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