Global Patent Index - EP 3700589 A4

EP 3700589 A4 20210728 - TEMPERATURE-RESPONSIVE DEGRADABLE HYDROGELS

Title (en)

TEMPERATURE-RESPONSIVE DEGRADABLE HYDROGELS

Title (de)

TEMPERATURREAKTIVE ABBAUBARE HYDROGELE

Title (fr)

HYDROGELS DÉGRADABLES SENSIBLES À LA TEMPÉRATURE

Publication

EP 3700589 A4 20210728 (EN)

Application

EP 18871782 A 20181024

Priority

  • US 201762576269 P 20171024
  • US 2018057398 W 20181024

Abstract (en)

[origin: WO2019084197A1] A polymer composition can include an aqueous vehicle and a temperature-responsive degradable polymer having a polymer including a LCST-imparting unit and a lactone-bearing unit including a pendent lactone group. The number of LCST-imparting units is greater than the number of lactone-bearing units. The temperature-responsive degradable polymer has an initial lower critical solution temperature (LCST) of 37°C or below. The polymer composition can have a pH lower than 7.

IPC 8 full level

A61L 24/04 (2006.01); A61L 27/50 (2006.01); A61L 27/52 (2006.01); A61L 27/54 (2006.01); A61L 27/58 (2006.01); A61L 31/14 (2006.01); A61L 31/16 (2006.01); C08F 220/54 (2006.01); C08F 290/00 (2006.01); C08F 290/02 (2006.01); C08F 290/06 (2006.01)

CPC (source: EP US)

A61L 27/52 (2013.01 - EP); A61L 27/54 (2013.01 - EP); A61L 27/58 (2013.01 - EP); A61L 31/145 (2013.01 - EP); A61L 31/148 (2013.01 - EP); A61L 31/16 (2013.01 - EP); C08F 220/54 (2013.01 - EP US)

C-Set (source: EP US)

EP

  1. C08F 220/54 + C08F 220/282 + C08F 220/58 + C08F 220/1804
  2. C08F 220/54 + C08F 230/085 + C08F 220/1804
  3. C08F 220/54 + C08F 220/58
  4. C08F 220/54 + C08F 220/282 + C08F 220/58
  5. C08F 220/54 + C08F 220/58 + C08F 220/1804

US

  1. C08F 220/54 + C08F 220/282 + C08F 220/58 + C08F 220/1804
  2. C08F 220/54 + C08F 230/085 + C08F 220/1804

Citation (search report)

  • [A] WO 2013056170 A1 20130418 - UNIV ARIZONA [US], et al
  • [A] WO 0044800 A1 20000803 - AMERSHAM PHARMACIA BIOTECH K K [JP], et al
  • [A] TURTURICA GABRIEL ET AL: "ABA triblock copolymers of poly(N-isopropylacrylamide-co-5,6-benzo-2-methylene -1,3-dioxepane) (A) and poly(ethylene glycol) (B): synthesis and thermogelation and degradation properties in aqueous solutions", COLLOID & POLYMER SCIENCE, SPRINGER VERLAG, HEIDELBERG, DE, vol. 294, no. 4, 21 January 2016 (2016-01-21), pages 743 - 753, XP035878440, ISSN: 0303-402X, [retrieved on 20160121], DOI: 10.1007/S00396-016-3831-9

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2019084197 A1 20190502; EP 3700589 A1 20200902; EP 3700589 A4 20210728

DOCDB simple family (application)

US 2018057398 W 20181024; EP 18871782 A 20181024