Non-softening resilient thermoplastic polyurethanes
US-10899870-B2 · Jan 26, 2021 · US
Articles made from hydrophilic thermoplastic polyurethane compositions
US11976159B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11976159-B2 |
| Application number | US-201716308834-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 20, 2017 |
| Priority date | Jun 28, 2016 |
| Publication date | May 7, 2024 |
| Grant date | May 7, 2024 |
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- Title
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Abstract
Official abstract text for this publication.
An article is prepared by injection molding, wherein the article is formed from a hydrophilic thermoplastic polyurethane composition, wherein the thermoplastic polyurethane composition comprises the reaction product of a hydroxyl terminated polyol intermediate component, an aliphatic isocyanate component, and, optionally, a chain extender component. For injection molding, the hydrophilic thermoplastic polyurethane has a crystallization temperature measured by dynamic scanning calorimetry of at least 75° C.
First claim
Opening claim text (preview).
What is claimed is: 1. An injection molded article comprising a thermoplastic polyurethane consisting of the reaction product of one poly(ethylene glycol) having a number average molecular weight of 1400 to 8000, an aliphatic diisocyanate selected from the group consisting of isophorone diisocyanate (IPDI), 1,4-cyclohexyl diisocyanate (CHDI), decane-1,10-diisocyanate, lysine diisocyanate (LDI), 1,4-butane diisocyanate (BDI), 1,5-pentanediisocyanate (PDI), hydrogenated xylene diisocyanate (HXDI), and hexamethylene diisocyanate (HDI) or mixtures thereof, and a chain extender selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,4-butanediol, 1,6-hexanediol, 1,3-butanediol, 1,5-pentanediol, neopentylglycol, 1,4-cyclohexanedimethanol, 2,2-bis[4-(2-hydroxyethoxy) phenyl]propane, hexamethylenediol, heptanediol, 3-methyl-L5-pentanediol, ethylenediamine, butanediamine, hexamethylenediamine, hydroxyethyl resorcinol and mixtures thereof, wherein the thermoplastic polyurethane composition has a crystallization temperature of at least 75° C. measured by DSC, wherein the isocyanate component and chain extender component make up a hard segment of the thermoplastic polyurethane and wherein the thermoplastic polyurethane comprises at least 10 wt % hard segment. 2. The injection molded article of claim 1 wherein the thermoplastic polyurethane comprises at least 13 wt % to about 50 wt % hard segment. 3. The injection molded article of claim 1 wherein the thermoplastic polyurethane has a water absorption range of at least 70% as measured by ASTM D570. 4. The injection molded article of claim 1 wherein the thermoplastic polyurethane has a water absorption range of at least 100% as measured by ASTM D570. 5. The injection molded article of claim 1 wherein the aliphatic diisocyanate consists of hexamethylene diisocyanate. 6. An injection molded article comprising a thermoplastic polyurethane consisting of the reaction product of one poly(ethylene glycol) having a number average molecular weight of 1400 to 8000, hexamethylene diisocyanate, and 1,4-butane diol, wherein the hexamethylene diisocyanate and the 1,4-butane diol make up a hard segment of the thermoplastic polyurethane, wherein the thermoplastic polyurethane composition comprises 10 wt % to about 30 wt % hard segment, wherein the thermoplastic polyurethane composition has a water absorption range of at least 100% as measured by ASTM D570, and wherein the thermoplastic polyurethane composition has a crystallization temperature of at least 75° C. measured by DSC.
Assignees
Inventors
Classifications
with compounds having active hydrogen · CPC title
Physical properties · CPC title
- C08G18/758Primary
containing two or more cycloaliphatic rings · CPC title
characterised by the choice of material · CPC title
using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material · CPC title
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Frequently asked questions
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- What does patent US11976159B2 cover?
- An article is prepared by injection molding, wherein the article is formed from a hydrophilic thermoplastic polyurethane composition, wherein the thermoplastic polyurethane composition comprises the reaction product of a hydroxyl terminated polyol intermediate component, an aliphatic isocyanate component, and, optionally, a chain extender component. For injection molding, the hydrophilic thermo…
- Who is the assignee on this patent?
- Lubrizol Advanced Mat Inc
- What technology area does this patent fall under?
- Primary CPC classification C08G18/758. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 07 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).