US 12,139,600 B2
Polymer blends with furan based polyesters
Sanjay Mehta, Spartanburg, SC (US)
Assigned to Auriga Polymers, Inc., Charlotte, NC (US)
Appl. No. 15/757,147
Filed by Auriga Polymers, Inc., Charlotte, NC (US)
PCT Filed Jun. 17, 2016, PCT No. PCT/US2016/038018
§ 371(c)(1), (2) Date Mar. 2, 2018,
PCT Pub. No. WO2017/039782, PCT Pub. Date Mar. 9, 2017.
Claims priority of provisional application 62/214,259, filed on Sep. 4, 2015.
Prior Publication US 2018/0244913 A1, Aug. 30, 2018
Int. Cl. C08L 67/02 (2006.01); B29C 49/00 (2006.01); B29K 67/00 (2006.01); B29L 31/00 (2006.01); B65D 1/02 (2006.01); B65D 1/40 (2006.01); C08G 63/16 (2006.01); C08G 63/181 (2006.01); C08G 63/688 (2006.01); C09D 167/02 (2006.01); B29C 49/06 (2006.01)
CPC C08L 67/02 (2013.01) [B29C 49/0005 (2013.01); B65D 1/0207 (2013.01); B65D 1/40 (2013.01); C08G 63/16 (2013.01); C08G 63/181 (2013.01); C08G 63/6886 (2013.01); C09D 167/02 (2013.01); B29C 49/06 (2013.01); B29K 2067/003 (2013.01); B29K 2995/0067 (2013.01); B29L 2031/7158 (2013.01)] 7 Claims
 
1. A molded bottle formed from a polyester composition comprising a blend of the following:
(a) about 40-45 wt. % of a polyethylene terephthalate comprising an isophthalic acid comonomer;
(b) about 40-45 wt. % of a sulfo-modified copolyester having an intrinsic viscosity (IV) of about 0.6 to 1.0 dL/g according to ASTM D4603-96, wherein the sulfo-modified copolyester comprises at least about 1 mole % to about 5 mole % of units of Formula (I)

OG Complex Work Unit Chemistry
wherein n is an integer from 3 to 10 and
wherein M+ is an alkali metal ion, earth alkali metal ion, phosphonium ion or ammonium ion; and
(c) about 10-20 wt. % of a polyalkylene furanoate selected from polyethylene furanoate, polybutylene furanoate, polytrimethylene furanoate, or any mixtures thereof, wherein
(a), (b), and (c) total 100 wt. %, and wherein
the molded bottle exhibits the following properties:
a haze of less than 5%, and
a Barrier Improvement Factor (BIF), defined as the ratio of oxygen permeability of a PET control bottle including only component (a) divided by the oxygen permeability of the molded bottle formed from the polyester composition, of at least 1.25, wherein oxygen permeability is measured according to ASTM D3985-05 (25° C., 50% RH).