Thermoplastic polyurethanes composition and preparation processes thereof
US-9605131-B2 · Mar 28, 2017 · US
Melt Processable Thermoplastic Polyurethane-Urea Elastomers
US2021163672A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021163672-A1 |
| Application number | US-202117172144-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 10, 2021 |
| Priority date | Mar 22, 2016 |
| Publication date | Jun 3, 2021 |
| Grant date | — |
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Abstract
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The present invention relates to a melt processable thermoplastic polyurethane-urea composition formed by a continuous bulk process without the presence of solvent using a polyol component, an isocyanate component, and chain extender component comprising a hindered aromatic diamine.
First claim
Opening claim text (preview).
1 - 8 . (canceled) 9 . A process for making a melt-processable thermoplastic polyurethane-urea elastomer composition comprising: (1) adding a reaction mixture to a heated extruder, said reaction mixture comprising (a) a polyol component, (b) an isocyanate component; and (c) a chain extender component, said chain extender component comprising a hindered aromatic diamine; (2) reacting said polyol component, said isocyanate component, and said chain extender component in a one-shot polymerization process in said heated extruder to form a thermoplastic polyurethane-urea elastomer composition, wherein the composition comprises less than 20 mol % urea; (3) cooling said polyurethane-urea elastomer composition; and (4) processing said polyurethane-urea elastomer composition. 10 . The process of claim 9 , wherein said processing step includes forming pellets of polyurethane-urea elastomer composition. 11 . (canceled) 12 . The process of claim 9 wherein the reaction mixture is substantially free of solvent. 13 . The process of claim 9 wherein the chain extender component comprise diethyltoluenediamine. 14 . The process of claim 9 wherein the polyol component comprises a polycarbonate polyol. 15 . A process for making a molded article from a thermoplastic polyurethane-urea composition comprising: (1) adding a reaction mixture to a heated extruder, said reaction mixture comprising (a) a polyol component, (b) an isocyanate component; and (c) a chain extender component, said chain extender component comprising diethyltoluenediamine; (2) reacting said polyol component, said isocyanate component, and said chain extender component in a one-shot polymerization process in said heated extruder to form a thermoplastic polyurethane-urea elastomer composition, wherein the composition comprises less than 20 mol % urea; (3) cooling said polyurethane-urea elastomer composition; (4) processing said polyurethane-urea elastomer composition; (5) melting said polyurethane-urea elastomer composition; (6) molding the melted polyurethane-urea elastomer composition into an article. 16 . The process of claim 15 , wherein said processing step includes forming pellets of polyurethane-urea elastomer composition. 17 . (canceled) 18 . The process of claim 15 wherein the reaction mixture is substantially free of solvent. 19 . (canceled) 20 . The process of claim 15 wherein the polyol component comprises a polycarbonate polyol. 21 . The process of claim 9 , wherein the isocyanate component comprises an aromatic isocyanate. 22 . The process of claim 15 , wherein the isocyanate component comprises an aromatic isocyanate.
Assignees
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Classifications
- C08G18/0895Primary
Manufacture of polymers by continuous processes (C08G18/0838 takes precedence) · CPC title
with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38 · CPC title
Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material · CPC title
with compounds of group C08G18/3225 or polyamines of C08G18/38 · CPC title
- C08G18/7671Primary
containing only one alkylene bisphenyl group · CPC title
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- What does patent US2021163672A1 cover?
- The present invention relates to a melt processable thermoplastic polyurethane-urea composition formed by a continuous bulk process without the presence of solvent using a polyol component, an isocyanate component, and chain extender component comprising a hindered aromatic diamine.
- Who is the assignee on this patent?
- Lubrizol Advanced Mat Inc
- What technology area does this patent fall under?
- Primary CPC classification C08G18/0895. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jun 03 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).