US 11,672,890 B2
Medical devices
Emanuele Di Nicolo', Gorla Minore (IT); Silvia Rita Petricci, Bresso (IT); Pasquale Campanelli, Limbiate (IT); and Marco Beltramin, Senago (IT)
Assigned to SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
Appl. No. 16/762,912
Filed by SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
PCT Filed Nov. 21, 2018, PCT No. PCT/EP2018/082018
§ 371(c)(1), (2) Date May 8, 2020,
PCT Pub. No. WO2019/101771, PCT Pub. Date May 31, 2019.
Claims priority of application No. 17203351 (EP), filed on Nov. 23, 2017.
Prior Publication US 2020/0360570 A1, Nov. 19, 2020
Int. Cl. A61L 29/06 (2006.01); C08G 18/50 (2006.01); C08L 27/06 (2006.01); C08L 75/04 (2006.01); C08G 18/32 (2006.01); C08G 18/76 (2006.01); C08G 18/66 (2006.01)
CPC A61L 29/06 (2013.01) [C08G 18/3206 (2013.01); C08G 18/5015 (2013.01); C08G 18/6674 (2013.01); C08G 18/7671 (2013.01); C08L 27/06 (2013.01); C08L 75/04 (2013.01)] 15 Claims
 
1. A composition (C) comprising:
(I) at least one melt-processable polymer selected from the group consisting of poly(vinyl chloride) (PVC), polyolefins, polyolefin-based elastomer (POBE) and silicones, and
(II) at least one F-TPU polymer, wherein the F-TPU polymer is at least one fluorinated polyurethane polymer having a weight average molecular weight of from 30,000 to about 150,000 Da, determined by means of gel permeation chromatography (GPC) technique and comprising recurring units derived from:
at least one monomer (b), wherein monomer (b) is at least one hydroxy-terminated (per)fluoropolyether polymer [PFPE polymer] comprising a (per)fluoropolyoxyalkylene chain (Rpf) having two chain ends, wherein one or more chain ends terminates with at least one —OH group, wherein Rpf has the formula:
—O-D-(CFX#)z1—O(Rf)(CFX*)z2-D*-O—
wherein z1 and z2, equal or different from each other, are equal to or higher than 1, X# and X*, equal or different from each other, are —F or —CF3, provided that when z1 and/or z2 are higher than 1, X# and X* are —F,
D and D*, equal or different from each other, are an alkylene chain comprising from 1 to 6 carbon atom, said alkylene chain being optionally substituted with at least one perfluoroalkyl group comprising form 1 to 3 carbon atoms,
(Rf) comprises repeating units Ro, said repeating units being independently selected from the group consisting of:
(i) —CFXO—, wherein X is F or CF3,
(ii) —CFXCFXO— wherein X, equal or different at each occurrence, is F or CF3, with the proviso that at least one X is F,
(iii) —CF2CF2CW2O—, wherein each of W, equal or different from each other, are F, Cl, or H,
(iv) —CF2CF2CF2CF2O—,
(v) —(CF2)j—CFZ-O—, wherein j is an integer from 0 to 3 and Z is a group of general formula —O—R(f-a)-T, wherein R(f-a) is a fluoroalkylene chain comprising a number of repeating units from 0 to 10, said repeating units selected from the group consisting of —CFXO—, —CF2CFXO, —CF2CF2CF2O—, —CF2CF2CF2CF2O—, with each of X being independently F or CF3 and T being a C1-C3 perfluoroalkyl group;
at least one monomer (c), wherein monomer (c) is at least one aromatic, aliphatic or cycloaliphatic diisocyanate; and
at least one monomer (d), wherein monomer (d) is at least one aliphatic, cycloaliphatic or aromatic diol having from 1 to 14 carbon atoms;
said melt-processable polymer being different from said F-TPU polymer.