Claims
- 1. An improved low abrasion lead free friction material comprising, in approximate percent by weight:
- curable rubber binder 8 - 20%phenolic resin 2 - 5%lead-free inorganic filler 35 - 60%lead-free organic filler 15 - 45%fiber 3 - 9%.
- 2. The improved lead-free friction material of claim 1 wherein said curable rubber binder comprises a rubber selected from the group consisting of butyl rubber, chlorinated butyl rubber, styrene-butadiene rubber, and nitrile rubber.
- 3. A lead-free friction material composition comprising, in percent by weight:
- curable rubber binder 13.9%phenolic resin 3.5%rubber additives 2.7%inorganic filler 41.7%organic filler 34.7%fiber 3.5% .
- 4. A lead-free friction material composition comprising, in percent by weight:
- Curable rubber binder 6.0%phenolic resin 3.2%rubber additives 4.8%inorganic fillers 48.0%organic fillers 30.0%fiber 8.0% .
- 5. A lead-free friction material composition comprising, in percent by weight;
- curable rubber binder 12.8%phenolic resin 2.6%rubber additives 1.5%inorganic fillers 57.5%organic fillers 19.2%fiber 6.4% .
- 6. An improved low abrasion lead free friction material comprising in approximate per cent by weight:
- curable rubber binder 8 - 20%phenolic resin 2 - 5%lead-free inorganic filler 35 - 60%lead-free organic filler 15 - 45%fiber 2 - 12%.
- 7. The improved lead-free friction material of claim 6 wherein said curable rubber binder comprises a rubber selected from the group consisting of butyl rubber, chlorinated butyl rubber, styrene-butadiene rubber, and nitrile rubber.
Parent Case Info
This is a continuation of application Ser. No. 302,464, filed Oct. 31, 1972, and now abandonded.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
561,962 |
Aug 1958 |
CA |
Continuations (1)
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Number |
Date |
Country |
Parent |
302464 |
Oct 1972 |
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