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Synthetic membrane compositions comprising polyurethane blends

A technology of polyurethane and composition, applied in the field of compositions for forming synthetic films, can solve problems such as not easy removal, health and safety problems, etc.

Active Publication Date: 2022-06-03
DSM IP ASSETS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These difficulties can be overcome by using strong, high-boiling organic solvents such as dimethylacetamide (DMAc) or dimethylformamide (DMF), but since such solvents are not easily removed from the polymer, it may cause Health and Safety Issues

Method used

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  • Synthetic membrane compositions comprising polyurethane blends
  • Synthetic membrane compositions comprising polyurethane blends
  • Synthetic membrane compositions comprising polyurethane blends

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0143] By 28.14% by weight of HMDI, 65.11% by weight of poly(tetramethylene oxide) glycol with an Mn of about 2000 g / mol, 6.48% by weight of butanediol, 0.25% by weight of 1-stearyl alcohol as terminal groups, A formulation of 0.25% by weight of ethylene bis(stearamide) as release agent and 0.04% by weight of stannous octoate as catalyst forms a hydrophobic polyurethane (hydrophobic PU). By 33.71% by weight of HMDI, 26.42% by weight of poly(tetramethylene oxide) glycol with Mn of about 2000 g / mol, 31.59% of polyethylene glycol with Mn of about 1450 g / mol, 0.5% of monomethyl - Formulation of polyethylene glycol 5000MW as end groups and 8.27% by weight of butanediol to form amphiphilic polyurethane (amphiphilic PU)

[0144] 80A is a silicone-containing hydrophobic thermoplastic polyurethane comprising about 35% by weight silicone-containing segments. The Mn of PVP is about 360000g / mol, and the Mw is about 1000000g / mol.

[0145] The compositions described in Table 1.1 were fo...

Embodiment 2

[0154] The solubility of various polyurethane formulations was investigated. The polyurethane and free hydrophilic polymer were the same as used in Example 1. Solubility was tested at room temperature.

[0155] table 2-1

[0156]

[0157] Glucose diffusivity and oxygen permeability coefficients were also determined for compositions exhibiting some degree of solubility, except 2-5. Examples 2-5 were victims of measurement error; reliable data on glucose diffusivity could not be obtained.

[0158] Table 2-2

[0159] Ex. Glucose diffusivity (cm 2 / sec)

[0160] Only blends of amphiphilic and hydrophobic polyurethanes showed suitable solubility in THF.

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Abstract

Disclosed herein are a membrane, a composition for forming the membrane, a method of forming the membrane, and sensors and other devices comprising the membrane. The film comprises a polyurethane component comprising 5% to 95% by weight of amphiphilic polyurethane based on the total weight of the polyurethane component and 5% to 95% by weight based on the total weight of the polyurethane component. Blends of Hydrophobic Polyurethanes in % by Weight.

Description

[0001] Cross References to Related Applications [0002] This application is claiming U.S. Provisional Application 62 / 550922, filed August 28, 2017, U.S. Provisional Application 62 / 550929, filed August 28, 2017, U.S. Provisional Application 62 / 550937, filed August 28, 2017, Priority to European Patent Application EP17191475.7 filed on September 15, 2017, European Patent Application EP17191476.5 filed on September 15, 2017 and European Patent Application EP17191477.3 filed on September 15, 2017, the above applications The entire content of is incorporated herein by reference. technical field [0003] The disclosed invention relates to compositions useful for forming synthetic films, methods of forming films therefrom, and films formed therefrom. Background technique [0004] The sensor may comprise an analyte diffusion limiting membrane. In the absence of an analyte diffusion-limiting membrane, the sensor would saturate rapidly and at low analyte concentrations. Ideally, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48A61B5/145C08G18/75C08L75/08C12Q1/00
CPCC08G18/4804C08G18/4825C08G18/4854C08G18/758A61B5/14532C08L75/08C12Q1/006A61B5/14503A61B5/14546C08G18/244C08G18/2825C08G18/283C08G18/4808C08G18/4833C08G18/6674C08G18/73C08G18/755C08L2203/16C08L2205/025A61B2562/0295C08G18/3893C08G18/44C08G18/48C08G18/61C08J5/18C08J9/28C08J2375/04C08J2375/06C08J2375/08C08L75/04C08L79/06A61B5/14735B01D67/0011B01D67/0095B01D69/02B01D71/54B01D71/58B01D2323/12B01D2325/34B01D2325/36C08J2475/04C12Q1/00
Inventor 詹妮弗·艾尔-拉希德查德·苏格亚玛约翰·祖潘奇杜尔加·普拉萨德·查拉萨尼
Owner DSM IP ASSETS BV