US 11,718,751 B2
Water-borne polymer composition
Amelia Mennella, Torre del Greco (IT); Eric Fassiau, Perwez (BE); and Liliana Deninno, Limido Comasco (IT)
Assigned to SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bóllate (IT)
Appl. No. 16/762,148
Filed by SOLVAY SPECIALTY POLYMERS ITALY S.p.A., Bollate (IT)
PCT Filed Nov. 13, 2018, PCT No. PCT/EP2018/081109
§ 371(c)(1), (2) Date May 7, 2020,
PCT Pub. No. WO2019/096799, PCT Pub. Date May 23, 2019.
Claims priority of application No. 17201498 (EP), filed on Nov. 14, 2017.
Prior Publication US 2020/0362164 A1, Nov. 19, 2020
Int. Cl. C08L 71/00 (2006.01); C09D 171/00 (2006.01)
CPC C08L 71/00 (2013.01) [C09D 171/00 (2013.01)] 19 Claims
 
1. A water-borne polymer composition, comprising:
particles of at least one polyaryletherketone polymer [polymer (PAEK)], said particles possessing an average particle size d50 of at least 1 and of at most 25 μm wherein d50 is the size at which 50% in volume of the polymer (PAEK) is comprised of particles with a diameter less than this value and is determined by laser light scattering according to ISO 13320;
at least one aromatic polyamic acid comprising recurring units, more than 50% mol of said recurring units comprising at least one aromatic ring and at least one amic acid group and/or imide group [recurring units (RPAI)], more than 50% mol of recurring units (RPAI) comprising at least one amic acid group [polymer (PAI)], wherein part or all of the amic acid groups are neutralized by at least one basic compound (B);
water;
at least one organic solvent (S), different from said basic compound (B), selected from the group consisting of mono-alcohols, polyols, glycol derivatives and their mixtures, said solvent (S) being present in an amount of at least 1 and at most 15% wt with respect to the total weight of the composition.