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Friction particle for brake lining

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专利汇可以提供Friction particle for brake lining专利检索,专利查询,专利分析的服务。并且A friction particle, useful in applications where cashew nut shell oil friction particles have been used, may be prepared by the reaction at a temperature from about 225 to about 400 degrees Fahrenheit of a non-oxyalkylated resole with resin selected from the group consisting of an oxyalkylated resole, an alkylated resole, an alkylated novolac, an oxyalkylated novolac, and mixtures thereof until it is insoluble, infusible, and does not soften slightly under mechanical force at temperatures below about 400 degrees Fahrenheit, and has substantially no cohesive or bonding strength.,下面是Friction particle for brake lining专利的具体信息内容。

1. A FRICTION PARTICLE COMPRISING THE NON-CATALYZED REACTION PRODUCT OF THE REACTION AT ABOUT 225 TO ABOUT 400 DEGREES F, OF A NONHYDROXYALKYLATED, NON-ALKYLATED HYDROXY AROMATIC HYDROCARBON-ALDEHYDE RESOLE CONTAINING SUBSTANTIALLY NO ETHERIFIED AROMATIC HYDROXYL GROUPS WITH A MIXTURE OF A HYDROXYALKYLATED HYDROXY AROMATIC HYDROCARBON-ALDEHYDE NOVOLAC WITH AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF A HYDROXYALKYLATED HYDROXY AROMATIC HYDROCARBON-ALDEHYDE RESOLE AND AN ALKYLATED HYDROXY AROMATIC HYDROCARBON ALDEHYDE RESOLE UNTIL THE RESULTING PRODUCT IS SUBSTANTIALLY INSOLUBLE IN ACETONE, INFUSIBLE, AND DOES NOT SOFTEN SLIGHTLY UNDER MECHANICAL FORCE AT A TEMPERATURE BELOW 400 DEGREES F, AND HAS SUBSTANTIALLY NO COHESIVE OR BONDING STRENGTH, WITHIN SAID NON-HYDROXYALKYLATED RESOLE COMPRISES ABOUT 60 TO ABOUT 95 PERCENT OF THE WEIGHT OF THE RESIN COMPONENTS; WHEREIN THE HYDROXYALKTLATED RESOLE CONTAINS LESS THAN ABOUT 0.5 PERCENT OF THE AROMATIC HYDROXYL ORIGINALLY PRESENT IN THE HYDROXY AROMATIC HYDROCARBON ALDEHYDE CONDENSATE; AND WHEREIN THE ALKYLATED GROUPS ARE SUBSTITUTED ON THE AROMATIC RING AND ARE SELECTED FROM THE GROUP CONSISTING OF: 8A) ALKYL GROUPS OF 1 TO 60 CARBON ATOMS, (B) CYCLOALKYL GROUPS OF 5 TO 12 CARBON ATOMS, (C) ALKYL, ARYL AND CYCLOALKYL DETONIC GROUPS WHEREIN THE HYDROCARBON PORTION IS AS DEFINED IN (A) AND (B) (D) ALKYL, ARYL AND CYCLOALKYL CARBOXYLIC GROUPS WHEREIN THE HYDROCARBON PORTION IS DEFINED IN (A) AND (B), (E) ARYL GROUPS OF 6 TO 24 CARBON ATOMS, AND (F) ARYL SUBSTITUTED ALKYL WHEREIN THE ARYL IS PHENYL, LOWER ALKYL-SUBSTITUTED PHENYL OR HYDROXY SUBSTITUTED PHENYL.
2. The particle of claim 1 wherein the first said resole in the particle is the condensation product of phenol and formaldehyde in an alkaline medium.
3. The particle of claim 1 wherein the said hydroxyalkylated resole in the particle is the hydrooxyalkylated product of a phenol with an aldehyde in alkaline medium.
4. The particle of claim 1 wherein the said novolac in the particle is the condensation product of phenol and formaldehyde in an acid medium.
5. The friction particle of claim 1 which comprises from about 5 to about 40 percent by weight of a mixture of a hydroxyalkylated hydroxy aromatic hydrocarbon-aldehyde novolac and an alkylated hydroxy aromatic hydrocarbon resole.
6. A brake lining comprising the cured product of a friction particle of claim 1, a resin binder and an inorganic filler.
7. A brake lining comprising the cured product of about 30 to 60 weight percent of asbestos fiber, up to 40 weight percent of other inorganic fillers and abrasives, about 5 to 15 weight percent of a friction particle of claim 1 and about 15 to 30 weight percent of a binder.
8. A brake lining comprising the cured product of about 30 to 60 weight percent of asbestos fiber, up to about 40 weight percent of other fillers and abrasives, about 5 to 15 weight percent of a friction particle of claim 5, and about 15 to 30 weight percent of binder.
9. The friction particle of claim 1 which comprises the reaction product of about 5 to about 40 percent by weight of a hydroxyalkylated novolac and about 95 to about 60 percent by weight of a mixture of an alkylated resole and a non-hydroxy-alkylated, non-alkylated resole.
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