Rubberized textile material for a belt ply, associated rubber mixture and belt

{
  "publication_number": "US11802001B2",
  "country": "US",
  "kind": "B2",
  "title": "Rubberized textile material for a belt ply, associated rubber mixture and belt",
  "abstract": "The rubberized textile material for a belt textile ply is provided on at least one side of a textile web with a peroxidically crosslinkable ethylene-alpha-olefin-diene terpolymer rubber mixture, preferably an EPDM mixture. In this rubberization mixture the third monomer content (diene content) of the EPDM is preferably at least 4% and the rubber mixture contains: a peroxidic crosslinker, a mineral oil having an aromatics proportion of at least 50 percent by weight and at least one reactive phenol and/or reactive phenol resin capable of binding to the double bonds of unsaturated polymers. The reactive phenol and/or phenol resin and the mineral oil are present in the rubber mixture in a content of altogether 5 to 60 phr. The rubberization has an exceptional manufacturing tack coupled with good adhesion and good dynamic properties.",
  "claims": [
    "1. A rubberized textile material for a belt textile ply, comprising a textile web that is at least onesidedly provided with a peroxidically crosslinkable ethylene-alpha-olefin (EAO) rubber mixture, wherein the EAO rubber mixture is directly applied to the textile web and wherein the EAO rubber mixture comprises an ethylene-alpha-olefin-diene terpolymer, a peroxidic crosslinker, a mineral oil having an aromatics proportion of at least 50 percent by weight, and at least one reactive phenol and/or reactive phenol resin capable of binding to double bonds of unsaturated polymers, wherein the reactive phenol/phenol resin and the mineral oil are present in the rubber mixture in a content of altogether 5 to 60 parts per hundred rubber (phr).",
    "2. The rubberized textile material as claimed in claim 1, wherein the rubber mixture contains at least 50 phr of ethylene-alpha-olefin-diene terpolymer.",
    "3. The rubberized textile material as claimed in claim 1, wherein the diene content of the ethylene-alpha-olefin-diene terpolymer ranges from 4% to 11.",
    "4. The rubberized textile material as claimed in claim 1, wherein the ethylene-alpha-olefin-diene terpolymer is an ethylene-propylene-diene terpolymer (EPDM).",
    "5. The rubberized textile material as claimed in claim 1 wherein a weight ratio of the aromatic mineral oil to the reactive phenyl/phenol resin is 4:1 to 3:5.",
    "6. The rubberized textile material as claimed in claim 1 wherein the rubber mixture contains 5 to 40 phr of one or more coactivators selected from the group consisting of acrylates, methacrylates, urethane acrylates, allylisocyanates, cyanurates, isocyanurates, guanidines, oximes, bismaleimides and sulfur, in each case individually or in combination.",
    "7. The rubberized textile material as claimed in claim 1 wherein the rubber mixture contains 5 to 25 phr of at least one organometallic ionic coactivator selected from the group consisting of metal acrylates and methyl methacrylates.",
    "8. The rubberized textile material of claim 7 wherein the at least one organometallic ionic coactivator is zinc dimethacrylate (ZnDMA).",
    "9. The rubberized textile material as claimed in claim 1 wherein the mineral oil in the rubber mixture comprises 50% to 95% by weight of aromatics.",
    "10. The rubberized textile material as claimed in claim 1 wherein the at least one reactive phenol and/or reactive phenol resin contains reactive OH groups and/or reactive methylol groups.",
    "11. The rubberized textile material as claimed in claim 1 wherein the rubber mixture contains one or more fillers selected from one or more mineral oxides and carbon black.",
    "12. The rubberized textile material as claimed in claim 1 wherein the rubber mixture is applied to the textile web by onesided or bothsided covering, immersion, knife-coating or frictioning.",
    "13. A belt having at least one ply of the rubberized textile material as claimed in claim 1 wherein the rubberized textile material forms an inner textile ply or is applied to at least one side of the belt as a cover ply or envelops the belt as an encapsulation.",
    "14. The belt as claimed in claim 13 wherein the belt is a V-belt, ribbed V-belt or toothed belt."
  ],
  "description_excerpt": "The invention relates to a rubberized textile material for a belt textile ply in which a textile web is at least onesidedly provided with a peroxidically crosslinkable ethylene-alpha-olefin rubber mixture and to a rubber mixture for producing the rubberized textile material and to a belt comprising at least one ply of the rubberized textile material.\n\nWidespread ethylene-alpha-olefin rubber mixtures used for many purposes include EPM and EPDM and mixtures.\n\nEspecially EPDM mixtures and semifinished products made therefrom for belt fabrication are known for a low manufacturing tack. Manufacturing tack is to be understood as the adhesion of the not-yet-vulcanized “green” rubber mixture during processing of rubber components of a part. It is thus for example essential that certain plies adhere to one another before being subjected to further processing. For the manufacture of encapsulated parts, in particular textile-encapsulated V-belts, a manufacturing tack is indispensable at least for automated production in encapsulation apparatuses. Hand-fabrication, which can partially counter the problem, is laborious and time-consuming.\n\nWO 2009/030529 A1 discloses adding tackifying resins to an EPDM mixture and using the thus obtained mixture as an adhesive for a textile cover ply. It is unknown what effect the resins, which are not described in detail, have on the adhesion between the textile and the belt elastomer and on important dynamic properties. However, resins generally impair strength and hardness.",
  "cpc": [
    "B65G 15/32",
    "B65G 15/00",
    "C08J 2323/16",
    "C08J 2471/10",
    "C08J 2491/00",
    "C08J 5/249",
    "C08L 2205/035",
    "C08L 23/16",
    "C08L 2312/04",
    "C08L 61/00",
    "C08L 91/00",
    "D06N 2211/04",
    "D06N 3/00",
    "D06N 3/0061",
    "D06N 3/0063",
    "D06N 3/04"
  ],
  "ipc": [
    "B65G 15/00",
    "B65G 15/32",
    "C08J 5/24",
    "C08L 23/16"
  ],
  "assignees": [
    "Arntz Beteilungs & Co KG GmbH"
  ],
  "inventors": [
    "Rudolf OHLHAEUSER",
    "Michael SCHAEPER",
    "Jens-Thomas AHLEMANN"
  ],
  "filing_date": "2018-09-14",
  "publication_date": "2023-10-31",
  "grant_date": "2023-10-31",
  "priority_date": "2017-09-14",
  "application_number": "US-201816131160-A",
  "family_id": "63720459",
  "cited_by_count": 0,
  "citations": [
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    "US3476642A",
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    "US5714545A",
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    "US20110126964A1",
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    "US20080188600A1",
    "WO2009030529A1",
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    "EP2411797A1",
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}