Integrated process for treating recycled streams of PET and PTT

A process comprising:

• (a) reacting a recycle stream selected from recycled PET carpet, PET carpet fiber, recycled PET containers, recycled PET textiles, other recycled PET articles, or mixtures thereof, with a glycol in a reactor, thereby forming a completely digested product stream comprising polyols, and at least one undigested stream comprising undigested materials selected from polyolefins, dyes, or inorganic fillers;
• (b) dispersing the undigested materials in the completely digested product stream with a mixer having a high speed, high shear impeller with a tip speed of 40 to 120 feet per second;
• (c) separating the at least one undigested stream from the completely digested product, thereby forming a separated digested product stream;
• and
• (d) reacting the separated digested product stream in the reactor with a hydrophobe selected from dimer fatty acids, trimer fatty acids, oleic acid, ricinoleic acid, tung oil, corn oil, canola oil, soybean oil, sunflower oil, bacterial oil, yeast oil, algae oil, castor oil, triglycerides or alkyl carboxylate esters having saturated or unsaturated C6-C36 fatty acid units, saturated or unsaturated C6-C36 fatty acids, alkoxylated castor oil, saturated or unsaturated C9-C18dicarboxylic acids or diols, cardanol-based products, recycled cooking oil, branched or linear C6-C36 fatty alcohols, hydroxy-functional materials derived from epoxidized, ozonized, or hydroformylated fatty esters or acids, or mixtures thereof, thereby forming a polyester polyol.