Polyolefin coating composition
US-2019382611-A1 · Dec 19, 2019 · US
Polyolefin-based coating composition
US12338358B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12338358-B2 |
| Application number | US-202017760921-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 26, 2020 |
| Priority date | Sep 19, 2019 |
| Publication date | Jun 24, 2025 |
| Grant date | Jun 24, 2025 |
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- Title
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- Abstract
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Abstract
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The present invention provides a paint formulation that has good storage stability and weather resistance, and that is capable of forming a paint film having excellent water resistance, chemical resistance such as gasohol resistance and fuel resistance, and adhesion. The paint formulation comprises an acid-modified polyolefin (A) and a tackifier (B), and satisfies the following (a) and (b): (a) the acid-modified polyolefin (A) has crystallinity; and (b) the tackifier (B) has a double-bond equivalent of 40 or more, as defined by the formula: double-bond equivalent=weight average molecular weight/number of double bonds in a molecule, or contains no double bond.
First claim
Opening claim text (preview).
The invention claimed is: 1. A paint formulation comprising an acid-modified polyolefin (A) and a tackifier (B), and satisfying the following (a) and (b): (a) the acid-modified polyolefin (A) has crystallinity; and (b) the tackifier (B) has a double-bond equivalent of 40 or more, as defined by the formula: double-bond equivalent=weight average molecular weight/number of double bonds in a molecule, or contains no double bond, wherein the paint formulation comprises the tackifier (B) in an amount of 60 to 400 parts by mass per 100 parts by mass of the acid-modified polyolefin (A). 2. The paint formulation according to claim 1 , wherein the paint formulation further comprises a hydrocarbon-based solvent (C) in an amount of 200 to 3000 parts by mass per 100 parts by mass of the acid-modified polyolefin (A). 3. The paint formulation according to claim 1 , further comprising at least one solvent selected from the group consisting of an ester-based solvent (D1) and a ketone-based solvent (D2). 4. The paint formulation according to claim 1 , wherein the acid-modified polyolefin (A) has an acid value of 5 to 40 mgKOH/g-resin. 5. The paint formulation according to claim 1 , wherein the acid-modified polyolefin (A) has a weight average molecular weight of 10,000 to 200,000. 6. The paint formulation according to claim 1 , further comprising an alcohol-based solvent (E). 7. A primer paint for a polyolefin substrate, comprising the paint formulation according to claim 1 .
Assignees
Inventors
Classifications
Priming paints (C09D5/08 takes precedence) · CPC title
Diluents or solvents · CPC title
macromolecular (C09D7/41-C09D7/48 take precedence) · CPC title
Hydrocarbons {(C08K5/0091 takes precedence)} · CPC title
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title
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Frequently asked questions
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- What does patent US12338358B2 cover?
- The present invention provides a paint formulation that has good storage stability and weather resistance, and that is capable of forming a paint film having excellent water resistance, chemical resistance such as gasohol resistance and fuel resistance, and adhesion. The paint formulation comprises an acid-modified polyolefin (A) and a tackifier (B), and satisfies the following (a) and (b): (a)…
- Who is the assignee on this patent?
- Toyobo Mc Corp
- What technology area does this patent fall under?
- Primary CPC classification C09D151/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 24 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).