Aqueous dispersion of capsules

US12359080B2 · kind B2 · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Hubertus Van Aert · Pulderbos, BE
• Johan Loccufier · Zwijnaarde, BE
• Jos Louwet · Merksem, BE

Key dates

• Filing date: Nov 26, 2019
• Grant date: Jul 15, 2025
• Expiry date: Nov 8, 2042

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K9/513
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

An aqueous dispersion of particles comprising a resin having at least one repeating unit of formula I, II and/or III and which is obtainable by contacting in a liquid comprising water, a compound A comprising at least 2 functional groups selected from the group of functional groups —X—C(═O)—CHR1-C(═O)—R2, —X—C(═O)—C≡C—R2; or —X—C(═O)—CR1=CR2-NR11R12, the functional groups are linked by a linking group comprising a polyester, polyether, polyolefin, polydimethylsiloxane or polycarbonate chain with a compound B comprising at least two —NH2, —NH3+ or —N═C═O, wherein X, R1, R2, R3, R11 and R12 have the same meaning as that defined in the claims and w. The invention also includes a method of producing the aqueous dispersion.