1. WO2026174357 - POLYMER PARTICLES

Publication Number WO/2026/174357

Publication Date 27.08.2026

International Application No. PCT/AU2026/050140

International Filing Date 20.02.2026

IPC

C08J 3/14 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J	WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
3	Processes of treating or compounding macromolecular substances
12	Powdering or granulating
14	by precipitation from solutions

A61K 9/10 2006.1

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
9	Medicinal preparations characterised by special physical form
10	Dispersions; Emulsions

A61K 9/50 2006.1

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
9	Medicinal preparations characterised by special physical form
48	Preparations in capsules, e.g. of gelatin, of chocolate
50	Microcapsules

A61K 47/02 2006.1

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
47	Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
02	Inorganic compounds

A61K 47/34 2017.1

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
47	Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
30	Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
34	Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers

C08J 3/14 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J	WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
3	Processes of treating or compounding macromolecular substances
12	Powdering or granulating
14	by precipitation from solutions

A61K 9/10 2006.1

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
9	Medicinal preparations characterised by special physical form
10	Dispersions; Emulsions

A61K 9/50 2006.1

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
9	Medicinal preparations characterised by special physical form
48	Preparations in capsules, e.g. of gelatin, of chocolate
50	Microcapsules

A61K 47/02 2006.1

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
47	Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
02	Inorganic compounds

A61K 47/34 2017.1

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
47	Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
30	Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
34	Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers

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Applicants

• CYTOMATRIX LIMITED [AU]/[AU]

Inventors

• O'SHEA, Michael
• O'SHEA, Riley

Agents

• DAVIES COLLISON CAVE PTY LIMITED

Priority Data

2025900478

20.02.2025

AU

Publication Language English (en)

Filing Language English (en)

Designated States

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AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CV, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IQ, IR, IS, IT, JM, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, MG, MK, MN, MU, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UY, UZ, VC, VN, WS, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, CV, GH, GM, KE, LR, LS, MU, MW, MZ, NA, RW, SC, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

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Title

(EN) POLYMER PARTICLES

(FR) PARTICULES POLYMÈRES

Abstract

(EN) The present invention relates to a process for producing dispersible polymer particles comprising a releasable agent, the process comprising: (i) providing a polymer particle forming stock liquid comprising one or both of polymer in solution, polymer in a colloidal state, and (ii) combining with the polymer particle forming stock liquid an ionic nucleant that promotes precipitation of the polymer; wherein as the polymer precipitates it coats the releasable agent to form the dispersible polymer particles comprising the releasable agent.

(FR) La présente invention concerne un procédé de production de particules polymères dispersibles comprenant un agent libérable, le procédé comprenant : (i) la fourniture d'un liquide mère de formation de particules polymères comprenant l'un ou les deux parmi un polymère en solution, un polymère dans un état colloïdal, et (ii) la combinaison avec le liquide mère de formation de particules polymères d'un agent nucléant ionique qui favorise la précipitation du polymère ; lorsque le polymère précipite, il recouvre l'agent libérable pour former les particules polymères dispersibles comprenant l'agent libérable.

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