Two-component curable composition for manufacturing thermoplastic polyurethane resin, thermoplastic polyurethane resin, and fiber-reinforced resin
US-11891511-B2 · Feb 6, 2024 · US
Polyurethane resin having satisfactory adhesive property, and adhesive composition using the same
US12012479B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12012479-B2 |
| Application number | US-201917284922-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 13, 2019 |
| Priority date | Dec 3, 2018 |
| Publication date | Jun 18, 2024 |
| Grant date | Jun 18, 2024 |
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- Title
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Abstract
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Disclosed herein is a polyurethane resin containing, as copolymerization components, a polycarbonate polyol (A), an organic diisocyanate (B) and a chain extender (C), wherein the polycarbonate polyol (A) contains a specific structure in an amount of 60 mol % or more and a glass transition temperature of the polyurethane resin is 50° C. or higher. The polyurethane resin has excellent heat resistance and satisfactory adhesive property to various substrates, and is usable as an adhesive composition.
First claim
Opening claim text (preview).
The invention claimed is: 1. A polyurethane resin containing, as copolymerization components, a polycarbonate polyol (A), an organic diisocyanate (B) and a chain extender (C), wherein the polycarbonate polyol (A) contains a structure represented by the following general formula (1) in an amount of 60 mol % or more, wherein a copolymerization content of the organic diisocyanate (B) is 1 part by mass or more and 50 parts by mass or less, relative to 100 parts by mass of the polycarbonate polyol (A), wherein the chain extender (C) is a polyol compound, and wherein a glass transition temperature of the polyurethane resin is 50° C. or higher, wherein in general formula (1), n represents an integer of 1 to 20. 2. The polyurethane resin according to claim 1 , wherein the organic diisocyanate (B) is isophorone diisocyanate, 4,4′-diphenylmethane diisocyanate or hexamethylene diisocyanate. 3. The polyurethane resin according to claim 1 , wherein the chain extender (C) is a glycol compound having 10 or less carbon atoms. 4. An adhesive composition comprising the polyurethane resin according to claim 1 and a crosslinking agent. 5. A binder for screen inks comprising the polyurethane resin according to claim 1 and a crosslinking agent. 6. A binder for decorative molding comprising the polyurethane resin according to claim 1 and a crosslinking agent.
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Inventors
Classifications
Polyurethanes · CPC title
containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group · CPC title
acyclic · CPC title
Polycarbonates · CPC title
Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen {(C08G18/2805 takes precedence)} · CPC title
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- What does patent US12012479B2 cover?
- Disclosed herein is a polyurethane resin containing, as copolymerization components, a polycarbonate polyol (A), an organic diisocyanate (B) and a chain extender (C), wherein the polycarbonate polyol (A) contains a specific structure in an amount of 60 mol % or more and a glass transition temperature of the polyurethane resin is 50° C. or higher. The polyurethane resin has excellent heat resist…
- Who is the assignee on this patent?
- Toyo Boseki, Toyobo Mc Corp
- What technology area does this patent fall under?
- Primary CPC classification C08G18/7657. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 18 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).