High melt strength polymers and method of making same

Details High melt strength polymers and method of making same High melt strength polymers and method of making same

2005-04-05

2005-04-05

Seidleck, James J. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S236000, C525S242000, C526S113000

Reexamination Certificate

active

06875816

ABSTRACT:
A polymer composition comprises: (a) a high molecular weight, branched component; and (b) a low molecular weight, branched component. Some polymer compositions are characterized by a substantial absent of amyl or methyl branches and a melt strength (MS) that satisfies the following relationship:MS≥xI2+ywhere x is greater than or equal to about 12.5 and y is greater than or equal to about 3.Some polymers are characterized by a melt strength (MS) that satisfies the following relationship:MS≥xI2+ywhere x is greater than or equal to about 3 and y is greater than or equal to about 4.5 and a molecular weight distribution of greater than 3. A process for making polymers is also disclosed.

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