Patent ID: 9410014
Filing Date: 2016-08-09
CPC Classification: C08G,C09D

Claim Text:
1. A method of making a polymer comprising: providing a condensation polyester comprising a plurality of constituent monomers and having a first molecular weight; providing a modifying monomer selected from the group consisting of butanol, hexanol, lauryl alcohol, decanol, glycerine, trimethylolpropane, neopentyl glycol, ethylene glycol, sorbitol, pentaerythritol, cyclohexane dimethanol, stearyl alcohol, adipic acid, lauric acid, palmitic acid, stearic acid, oleic acid, behenic acid, linolenic acid, succinic acid, maleic acid, maleic anhydride acid, butanoic acid, phthalic acid, phthalic anhydride acid, isophthalic acid, terephthalic acid, trimellitic anhydride acid, diethylene glycol, triethylene glycol, polyethylene glycol 200, polyethylene glycol 400, polyethylene glycol 600, polyethylene glycol 800, polyethylene glycol 1000, ethoxylate condensates comprising 1 to 25 moles of ethylene oxide thereof, esters thereof, di-esters thereof, tri-esters thereof, amines thereof, amides thereof, and combinations thereof; and without depolymerizing the condensation polyester into its constituent monomers, transesterifying the modifying monomer with staged addition of a predetermined amount of the condensation polyester, wherein the transesterifying produces a final polymer having a second molecular weight that is greater than the first molecular weight.