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Phenolic resin composition for friction material, friction material, and brake
US2016347949A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016347949-A1 |
| Application number | US-201515115177-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 27, 2015 |
| Priority date | Feb 7, 2014 |
| Publication date | Dec 1, 2016 |
| Grant date | — |
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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).
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 the phenolic resin composition for friction materials includes an adduct of the hexamethylenetetramine with the high-ortho novolac phenolic resin. 3 . The phenolic resin composition for friction materials according to claim 2 , 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. 4 . 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. 5 . 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. 6 . 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. 7 . 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. 8 . 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. 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
- C08L61/06Primary
of aldehydes with phenols · CPC title
Solid polymers with solid and/or liquid additives · CPC title
with phenol · CPC title
Resorcinol · CPC title
Material of friction lining and support element of same or similar composition · CPC title
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Frequently asked questions
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- What does patent US2016347949A1 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
- 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 Thu Dec 01 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).