Organic slurry and method for manufacture thereof
US-12054615-B2 · Aug 6, 2024 · US
Phenolic resin composition for friction material, friction material, and brake
US9926446B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9926446-B2 |
| Application number | US-201515115177-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 27, 2015 |
| Priority date | Feb 7, 2014 |
| Publication date | Mar 27, 2018 |
| Grant date | Mar 27, 2018 |
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- Title
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Abstract
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A phenolic resin composition for friction materials includes a high-ortho novolac phenolic resin, a novolac resorcinol resin, and hexamethylenetetramine.
First claim
Opening claim text (preview).
The invention claimed is: 1. A phenolic resin composition for friction materials comprising: a high-ortho novolac phenolic resin; a novolac resorcinol resin; and hexamethylenetetramine. 2. The phenolic resin composition for friction materials according to claim 1 , wherein a content of the novolac resorcinol resin is greater than or equal to 1 part by mass and less than or equal to 100 parts by mass with respect to 100 parts by mass of the high-ortho novolac phenolic resin. 3. The phenolic resin composition for friction materials according to claim 1 , wherein the high-ortho novolac phenolic resin has an ortho/para bonding ratio of higher than or equal to 1 and lower than or equal to 9. 4. The phenolic resin composition for friction materials according to claim 1 , wherein the high-ortho novolac phenolic resin has a weight-average molecular weight of greater than or equal to 1,000 and less than or equal to 8,000. 5. The phenolic resin composition for friction materials according to claim 1 , wherein a content of free phenol is lower than 1% by mass with respect to the total amount of the high-ortho novolac phenolic resin. 6. The phenolic resin composition for friction materials according to claim 1 , wherein, when the total amount of the high-ortho novolac phenolic resin and the novolac resorcinol resin is set to 100 parts by mass, a content of the hexamethylenetetramine is higher than or equal to 5 parts by mass and lower than or equal to 20 parts by mass with respect to the total 100 parts by mass of the high-ortho novolac phenolic resin and the novolac resorcinol resin. 7. The phenolic resin composition for friction materials according to claim 1 , wherein the phenolic resin composition for friction materials includes an adduct of the hexamethylenetetramine with the high-ortho novolac phenolic resin. 8. The phenolic resin composition for friction materials according to claim 7 , wherein the amount of the hexamethylenetetramine forming the adduct is greater than or equal to 30% with respect to the total amount of the hexamethylenetetramine included in the phenolic resin composition for friction materials. 9. The phenolic resin composition for friction materials according to claim 1 , wherein the phenolic resin composition for friction materials is obtained by melting and mixing the high-ortho novolac phenolic resin, the novolac resorcinol resin, and the hexamethylenetetramine. 10. The phenolic resin composition for friction materials according to claim 9 , wherein the phenolic resin composition for friction materials is obtained by melting and mixing a resin mixture of the high-ortho novolac phenolic resin and the novolac resorcinol resin and the hexamethylenetetramine. 11. A friction material comprising: a fibrous base material; a filler; and a binding material, wherein the binding material includes the phenolic resin composition for friction materials according to claim 1 . 12. The friction material according to claim 11 , wherein the fibrous base material includes an organic fiber. 13. The friction material according to claim 11 , wherein the filler includes an inorganic filler. 14. A brake formed using the friction material according to claim 11 .
Assignees
Inventors
Classifications
Solid polymers with solid and/or liquid additives · CPC title
Material of friction lining and support element of same or similar composition · CPC title
with polyhydric phenols · CPC title
- C08L61/06Primary
of aldehydes with phenols · CPC title
Resorcinol · CPC title
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Frequently asked questions
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- What does patent US9926446B2 cover?
- A phenolic resin composition for friction materials includes a high-ortho novolac phenolic resin, a novolac resorcinol resin, and hexamethylenetetramine.
- Who is the assignee on this patent?
- Sumitomo Bakelite Co, Sumitomo Bakelite Co
- What technology area does this patent fall under?
- Primary CPC classification C08L61/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 27 2018 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).