Polyisocyanate composition, film-forming composition, film, film laminate, adhesive resin composition and adhesive resin-cured product, coating composition and coating material-cured product
US-2022363808-A1 · Nov 17, 2022 · US
Blocked isocyanate composition, production method thereof, curing agent for paint, paint composition and coated film
US12281193B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12281193-B2 |
| Application number | US-202418597171-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 6, 2024 |
| Priority date | Mar 10, 2023 |
| Publication date | Apr 22, 2025 |
| Grant date | Apr 22, 2025 |
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Abstract
Official abstract text for this publication.
A production method of a blocked isocyanate composition, including a step of mixing and reacting a polyisocyanate and an oxime-based blocking agent, in which a ratio of an amount of the oxime-based blocking agent mixed to an amount of the polyisocyanate mixed is 0.91 to 0.99 in terms of an equivalent ratio.
First claim
Opening claim text (preview).
What is claimed is: 1. A production method of a blocked isocyanate composition, comprising: a step of mixing and reacting a polyisocyanate and an oxime-based blocking agent, wherein a ratio of an amount of the oxime-based blocking agent mixed to an amount of the polyisocyanate mixed is 0.91 to 0.99 in terms of an equivalent ratio, and wherein the polyisocyanate contains an aliphatic polyisocyanate having 4 to 6 carbon atoms or a derivative thereof, wherein the blocked isocyanate composition has a free isocyanate group, and wherein the content rate of the free isocyanate in the blocked isocyanate is from 0.1 to 1.5 mass %. 2. The production method of a blocked isocyanate composition according to claim 1 , wherein the ratio of the amount of the oxime-based blocking agent mixed to the amount of the polyisocyanate mixed is 0.97 to 0.99 in terms of the equivalent ratio. 3. A blocked isocyanate composition comprising: a blocked isocyanate that is a reaction product between a polyisocyanate and an oxime-based blocking agent or a derivative thereof, wherein a ratio of a total amount of an isocyanate group blocked with an oxime-based blocking agent that is contained in the blocked isocyanate to a total amount of an isocyanate group that is contained in the polyisocyanate is 0.91 to 0.99 in terms of a mole ratio, wherein the polyisocyanate contains an aliphatic polyisocyanate having 4 to 6 carbon atoms or a derivative thereof, wherein the blocked isocyanate has a free isocyanate group, and wherein the content rate of the free isocyanate in the blocked isocyanate is from 0.1 to 1.5 mass %. 4. The blocked isocyanate composition according to claim 3 , wherein the ratio of the total amount of the isocyanate group blocked with the oxime-based blocking agent that is contained in the blocked isocyanate to the total amount of the isocyanate group that is contained in the polyisocyanate is 0.957 to 0.99 in terms of the mole ratio. 5. A curing agent for paint composed of the blocked isocyanate composition according to claim 3 . 6. A paint composition comprising: a main agent component; and a curing agent component, wherein the curing agent component contains the blocked isocyanate composition according to claim 3 . 7. A coated film that is formed of the paint composition according to claim 6 .
Assignees
Inventors
Classifications
Polyurethanes · CPC title
Compositions for coatings · CPC title
Oximes · CPC title
- C08G18/8077Primary
Oximes · CPC title
- C08G18/792Primary
formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates · CPC title
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- What does patent US12281193B2 cover?
- A production method of a blocked isocyanate composition, including a step of mixing and reacting a polyisocyanate and an oxime-based blocking agent, in which a ratio of an amount of the oxime-based blocking agent mixed to an amount of the polyisocyanate mixed is 0.91 to 0.99 in terms of an equivalent ratio.
- Who is the assignee on this patent?
- Tosoh Corp
- What technology area does this patent fall under?
- Primary CPC classification C08G18/8077. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 22 2025 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).