Process for the preparation of transparent, shaped articles containing polyesters comprising a cyclobutanediol

A process for forming a shaped article, comprising:

• (A) melt blending
• (i) a first component comprising at least one polyester which comprises:
• (a) diacid residues comprising about 70 to about 100 mole percent, based on the total diacid residues, of the residues of terephthalic acid;
• 0 to about 30 mole percent of the residues of at least one modifying aromatic dicarboxylic acid having up to 20 carbon atoms;
• and 0 to about 10 mole percent of the residues of at least one modifying aliphatic dicarboxylic acid having up to 16 carbon atoms;
• and
• (b) diol residues comprising about 1 to about 99 mole percent, based on the total diol residues, of the residues of 2,2,4,4-tetramethyl-1,3-cyclobutanediol;
• and about 1 to about 99 mole percent of the residues of 1,4-cyclohexanedimethanol;
• and
• (ii) a second component comprising a copolyamide or a homogeneous, transamidized blend of at least 2 polyamides;
• wherein said first component (i) and second component (ii) form an immiscible blend, said second component and said first component have a difference in refractive index, RI(second component)−RI(first component), of about 0.006 to about −0.0006, and said immiscible blend has a percent transmittance of at least 75%, and a haze of 10% or less;
• (B) forming a shaped article;
• (C) recovering a scrap polymer composition comprising said blended first and second components (i) and (ii);
• (D) grinding said scrap polymer composition to produce a polymer regrind;
• (E) optionally, drying said scrap polymer composition;
• and
• (F) combining said polymer regrind with said first and second components (i) and (ii) of step (A).