Patent Document ID: 20100319440
Application ID: 12868552
Patent Flag: 0

Claim One:
1. A method of determining a value of a physical or chemical property of at least one polymer test sample, the at least one polymer test sample having a composite density, a molecular weight, and a weight fraction at the respective molecular weight, comprising: a) providing at least two polymer training samples, each training sample having a composite density, a molecular weight, a weight fraction at the respective molecular weight, and a known value of the respective physical or chemical property; b) determining a minimum molecule length for a tie molecule using the composite density for each of the at least two polymer training samples and the at least one polymer test sample; c) determining a respective probability for tie molecule formation at the respective molecular weight from each minimum molecule length for a tie molecule of step b); d) determining a respective weighted tie molecule probability, each weighted tie molecule probability being determined as the multiplication product of: (1) the weight fraction at the respective molecular weight; and (2) the probability for tie molecule formation in step c) at the respective molecular weight; e) correlating the respective weighted tie molecule probability for each of the at least two polymer training samples in step d) with the known value of the respective physical or chemical property; and f) applying the correlation of step e) to the weighted tie molecule probability of the at least one polymer test sample to determine the value of the physical or chemical property of the at least one polymer test sample.