Resin-reinforcing filler and resin composition
US-2019233619-A1 · Aug 1, 2019 · US
Rubber-reinforcing cord and rubber product including same
US11945948B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11945948-B2 |
| Application number | US-201916965945-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 4, 2019 |
| Priority date | Feb 15, 2018 |
| Publication date | Apr 2, 2024 |
| Grant date | Apr 2, 2024 |
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Abstract
Official abstract text for this publication.
A rubber-reinforcing cord (12) of the present invention includes at least one strand. The strand includes at least one filament bundle and a coating provided to cover at least a portion of the surface of the filament bundle. The coating contains a polymer and cellulose nanofibers, and does not contain a resorcinol-formaldehyde condensate. The polymer contains at least one selected from a polyurethane and a rubber component. In the coating, the content of the cellulose nanofibers is 0.1 to 10 parts by mass with respect to 100 parts by mass of the polymer. The proportion of the coating in the rubber-reinforcing cord is 18 vol % or more.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rubber-reinforcing cord for reinforcing a rubber product, the rubber-reinforcing cord comprising: at least one strand, wherein the strand comprises at least one filament bundle and a coating provided to cover at least a portion of a surface of the filament bundle, the coating contains a polymer and cellulose nanofibers and does not contain a resorcinol-formaldehyde condensate, the polymer contains at least one selected from a polyurethane and a rubber component, in the coating, the content of the cellulose nanofibers is 0.1 to 10 parts by mass with respect to 100 parts by mass of the polymer, and the proportion of the coating in the rubber-reinforcing cord is 18 vol % or more. 2. The rubber-reinforcing cord according to claim 1 , wherein, in the coating, the content of the cellulose nanofibers is 0.1 to 10 parts by mass with respect to 100 parts by mass of the total content of all components except the cellulose nanofibers. 3. The rubber-reinforcing cord according to claim 1 , wherein the cellulose nanofibers have an average fiber diameter of 100 nm or less. 4. The rubber-reinforcing cord according to claim 1 , wherein a filament included in the filament bundle is a carbon fiber filament or a glass fiber filament. 5. A rubber product reinforced by the rubber-reinforcing cord according to claim 1 . 6. The rubber product according to claim 5 , being a rubber belt comprising matrix rubber and the rubber-reinforcing cord embedded in the matrix rubber. 7. The rubber product according to claim 6 , wherein the matrix rubber comprises urethane rubber. 8. The rubber-reinforcing cord according to claim 1 , wherein a filament included in the at least one filament bundle is a glass fiber filament. 9. The rubber-reinforcing cord according to claim 1 , wherein in the coating, a content of the cellulose nanofibers is 5 parts by mass or less with respect to 100 parts by mass of the polymer. 10. The rubber-reinforcing cord according to claim 1 , wherein the polymer contains the polyurethane.
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- What does patent US11945948B2 cover?
- A rubber-reinforcing cord (12) of the present invention includes at least one strand. The strand includes at least one filament bundle and a coating provided to cover at least a portion of the surface of the filament bundle. The coating contains a polymer and cellulose nanofibers, and does not contain a resorcinol-formaldehyde condensate. The polymer contains at least one selected from a polyur…
- Who is the assignee on this patent?
- Nippon Sheet Glass Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08L75/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 02 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).