	US 12,258,469 B2
	Aqueous biopolymer dispersions
Alan Bewsher, Ripponden (GB); Paul Smith, Halifax (GB); and Jade Rowley, Pontefract (GB)
Assigned to Aquaspersions Limited, Halifax (GB)
Appl. No. 18/011,802
Filed by Aquaspersions Limited, Halifax (GB)
PCT Filed Jul. 2, 2021, PCT No. PCT/EP2021/068418 § 371(c)(1), (2) Date Dec. 20, 2022, PCT Pub. No. WO2022/003195, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 20183822 (EP), filed on Jul. 2, 2020.
Prior Publication US 2023/0235166 A1, Jul. 27, 2023
Int. Cl. C08L 29/04 (2006.01); B29C 71/02 (2006.01); C08J 7/04 (2020.01); C08K 5/092 (2006.01); C08L 67/02 (2006.01); C09D 167/02 (2006.01); C09D 167/04 (2006.01)

CPC C08L 67/02 (2013.01) [C08J 7/04 (2013.01); C08J 7/08 (2013.01); C08K 5/092 (2013.01); C09D 167/02 (2013.01); C08J 2301/02 (2013.01); C08J 2367/02 (2013.01)]

19 Claims

1. An aqueous biopolymer dispersion composition comprising:

a biopolymer selected from the group consisting of: polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), polylactic acid (PLA), poly (3-hydroxybutyrate) (PHB), polycaprolactone (PCL), poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH);

poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), polyhydroxyalkanoate (PHA), and mixtures thereof;

a stabilising agent selected from the group consisting of: polyvinyl alcohol, fatty alcohol ethoxylates, ethylene oxide/propylene oxide (EO/PO) block copolymers, salts of fatty acids and mixtures thereof;

a rheology modifier;

a cross-linking agent being a bifunctional carboxylic acid or bifunctional aldehyde;

optional further ingredients; and

water.