Soft polyurethane coating for a golf ball
US-9962577-B1 · May 8, 2018 · US
Coatings for golf balls having a thermoplastic polyurethane cover
US11040250B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11040250-B2 |
| Application number | US-201916590179-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 1, 2019 |
| Priority date | Oct 1, 2019 |
| Publication date | Jun 22, 2021 |
| Grant date | Jun 22, 2021 |
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- Title
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- Abstract
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- Assignees and inventors
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Abstract
Official abstract text for this publication.
Methods for coatings for golf balls, particularly golf balls having thermoplastic polyurethane covers, and the resulting finished balls are provided. The coating is preferably a topcoat comprising a polyurethane composition containing optical brighteners. The topcoat composition may comprise a low concentration of optical brighteners. For example, the concentration of optical brightener can be in the range of 0.01 to about 0.20 weight %. Multi-piece golf balls having inner cores, outer cores, inner covers, and intermediate layers can be made. The finished ball with the topcoat has many advantageous physical and playing performance properties.
First claim
Opening claim text (preview).
We claim: 1. A method for forming a coated golf ball, comprising the steps of: providing a golf ball comprising at least one core layer and an outer cover layer, wherein the outer cover layer is formed from a thermoplastic polyurethane composition; applying a mixture comprising multi-functional isocyanate and solvent to the outer cover layer; applying a first polyurethane coating comprising unreacted isocyanate groups and having an isocyanate index of at least about 115 to the outer cover layer; treating the golf ball with heat; and applying a second polyurethane coating to the outer cover of the golf ball, the second polyurethane coating comprising an optical brightener in a concentration of about 0.01 to about 0.20 weight %, to form a coated golf ball. 2. The method of claim 1 , wherein the wet weight of the second polyurethane coating is in the range of about 0.20 g to about 0.42 g. 3. The method of claim 1 , wherein the optical brightener is selected from the group consisting of triazine-stilbenes (di, tetra-, or hexa-sulfonated); coumarins; imidazolines; diazoles; triazoles; benzooxazolines; and biphenyl-stilbenes; and mixtures thereof.
Assignees
Inventors
Classifications
- A63B37/0022Primary
Coatings, e.g. paint films; Markings · CPC title
Marking of balls · CPC title
Polyurea · CPC title
Hardness · CPC title
Thickness · CPC title
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Frequently asked questions
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- What does patent US11040250B2 cover?
- Methods for coatings for golf balls, particularly golf balls having thermoplastic polyurethane covers, and the resulting finished balls are provided. The coating is preferably a topcoat comprising a polyurethane composition containing optical brighteners. The topcoat composition may comprise a low concentration of optical brighteners. For example, the concentration of optical brightener can be …
- Who is the assignee on this patent?
- Acushnet Co
- What technology area does this patent fall under?
- Primary CPC classification A63B37/0022. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jun 22 2021 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).