TIRE WITH STRATIFIED TREAD COMPOSITION
A pneumatic tire having a circumferential tread (2) comprising an outer tread cap layer (3) and an underlying sub tread cap layer (4) is disclosed. The outer tread cap layer (3) is of a rubber composition comprising conjugated diene based elastomers comprising 20 to 80 phr of natural cis 1,4-polyiso...
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| creator | FORCINITI, Leandro ZHAO, Junling CERRATO MEZA, Roberto BUSCH, Warren James |
| description | A pneumatic tire having a circumferential tread (2) comprising an outer tread cap layer (3) and an underlying sub tread cap layer (4) is disclosed. The outer tread cap layer (3) is of a rubber composition comprising conjugated diene based elastomers comprising 20 to 80 phr of natural cis 1,4-polyisoprene rubber (NR) and 80 to 20 phr of cis 1,4-polybutadiene rubber (BR), wherein the polybutadiene rubber (BR) comprises a combination of a designated (BR1) and a specialized (BR2) cis 1,4-polybutadiene rubber. The underlying sub tread layer (4) is of a rubber composition comprising conjugated diene based elastomers comprising 40 to 60 phr of natural cis 1,4-polyisoprene rubber (NR) and 60 to 40 phr of cis 1,4-polybutadiene rubber (BR), wherein the polybutadiene rubber (BR) comprises a combination of the designated (BR1) and the specialized (BR2) cis 1,4-polybutadiene rubber. The specialized cis 1,4-polyisoprene rubber has a microstructure comprising 90 to 99 percent cis 1,4-isomeric units, a number average molecular weight (Mn) in a range of from 90,000 to 220,000 and a heterogeneity index (Mw/Mn) in a range of from 2.5/1 to 5/1. The designated cis 1,4-polybutadiene rubber has a microstructure comprising 96 to 99 percent cis 1,4-isomeric units, a number average molecular weight (Mn) in a range of from 150,000 to 300,000 and a heterogeneity index (Mw/Mn) in a range of from 1.5/1 to 2/1. |
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The outer tread cap layer (3) is of a rubber composition comprising conjugated diene based elastomers comprising 20 to 80 phr of natural cis 1,4-polyisoprene rubber (NR) and 80 to 20 phr of cis 1,4-polybutadiene rubber (BR), wherein the polybutadiene rubber (BR) comprises a combination of a designated (BR1) and a specialized (BR2) cis 1,4-polybutadiene rubber. The underlying sub tread layer (4) is of a rubber composition comprising conjugated diene based elastomers comprising 40 to 60 phr of natural cis 1,4-polyisoprene rubber (NR) and 60 to 40 phr of cis 1,4-polybutadiene rubber (BR), wherein the polybutadiene rubber (BR) comprises a combination of the designated (BR1) and the specialized (BR2) cis 1,4-polybutadiene rubber. The specialized cis 1,4-polyisoprene rubber has a microstructure comprising 90 to 99 percent cis 1,4-isomeric units, a number average molecular weight (Mn) in a range of from 90,000 to 220,000 and a heterogeneity index (Mw/Mn) in a range of from 2.5/1 to 5/1. The designated cis 1,4-polybutadiene rubber has a microstructure comprising 96 to 99 percent cis 1,4-isomeric units, a number average molecular weight (Mn) in a range of from 150,000 to 300,000 and a heterogeneity index (Mw/Mn) in a range of from 1.5/1 to 2/1.</description><language>eng ; fre ; ger</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ; DEVICES OR ARRANGEMENTS RELATED TO TYRES ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; PERFORMING OPERATIONS ; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TRANSPORTING ; TYRE CHANGING OR REPAIRING ; TYRE INFLATION ; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS ; VEHICLE TYRES ; VEHICLES IN GENERAL</subject><creationdate>2017</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170125&DB=EPODOC&CC=EP&NR=3115410A3$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170125&DB=EPODOC&CC=EP&NR=3115410A3$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FORCINITI, Leandro</creatorcontrib><creatorcontrib>ZHAO, Junling</creatorcontrib><creatorcontrib>CERRATO MEZA, Roberto</creatorcontrib><creatorcontrib>BUSCH, Warren James</creatorcontrib><title>TIRE WITH STRATIFIED TREAD COMPOSITION</title><description>A pneumatic tire having a circumferential tread (2) comprising an outer tread cap layer (3) and an underlying sub tread cap layer (4) is disclosed. The outer tread cap layer (3) is of a rubber composition comprising conjugated diene based elastomers comprising 20 to 80 phr of natural cis 1,4-polyisoprene rubber (NR) and 80 to 20 phr of cis 1,4-polybutadiene rubber (BR), wherein the polybutadiene rubber (BR) comprises a combination of a designated (BR1) and a specialized (BR2) cis 1,4-polybutadiene rubber. The underlying sub tread layer (4) is of a rubber composition comprising conjugated diene based elastomers comprising 40 to 60 phr of natural cis 1,4-polyisoprene rubber (NR) and 60 to 40 phr of cis 1,4-polybutadiene rubber (BR), wherein the polybutadiene rubber (BR) comprises a combination of the designated (BR1) and the specialized (BR2) cis 1,4-polybutadiene rubber. The specialized cis 1,4-polyisoprene rubber has a microstructure comprising 90 to 99 percent cis 1,4-isomeric units, a number average molecular weight (Mn) in a range of from 90,000 to 220,000 and a heterogeneity index (Mw/Mn) in a range of from 2.5/1 to 5/1. The designated cis 1,4-polybutadiene rubber has a microstructure comprising 96 to 99 percent cis 1,4-isomeric units, a number average molecular weight (Mn) in a range of from 150,000 to 300,000 and a heterogeneity index (Mw/Mn) in a range of from 1.5/1 to 2/1.</description><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</subject><subject>DEVICES OR ARRANGEMENTS RELATED TO TYRES</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>PERFORMING OPERATIONS</subject><subject>REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>TRANSPORTING</subject><subject>TYRE CHANGING OR REPAIRING</subject><subject>TYRE INFLATION</subject><subject>USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS</subject><subject>VEHICLE TYRES</subject><subject>VEHICLES IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAL8QxyVQj3DPFQCA4JcgzxdPN0dVEICXJ1dFFw9vcN8A_2DPH09-NhYE1LzClO5YXS3AwKbq4hzh66qQX58anFBYnJqXmpJfGuAcaGhqYmhgaOxsZEKAEAi6EjOg</recordid><startdate>20170125</startdate><enddate>20170125</enddate><creator>FORCINITI, Leandro</creator><creator>ZHAO, Junling</creator><creator>CERRATO MEZA, Roberto</creator><creator>BUSCH, Warren James</creator><scope>EVB</scope></search><sort><creationdate>20170125</creationdate><title>TIRE WITH STRATIFIED TREAD COMPOSITION</title><author>FORCINITI, Leandro ; ZHAO, Junling ; CERRATO MEZA, Roberto ; BUSCH, Warren James</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3115410A33</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2017</creationdate><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</topic><topic>DEVICES OR ARRANGEMENTS RELATED TO TYRES</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>PERFORMING OPERATIONS</topic><topic>REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>TRANSPORTING</topic><topic>TYRE CHANGING OR REPAIRING</topic><topic>TYRE INFLATION</topic><topic>USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS</topic><topic>VEHICLE TYRES</topic><topic>VEHICLES IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>FORCINITI, Leandro</creatorcontrib><creatorcontrib>ZHAO, Junling</creatorcontrib><creatorcontrib>CERRATO MEZA, Roberto</creatorcontrib><creatorcontrib>BUSCH, Warren James</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>FORCINITI, Leandro</au><au>ZHAO, Junling</au><au>CERRATO MEZA, Roberto</au><au>BUSCH, Warren James</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>TIRE WITH STRATIFIED TREAD COMPOSITION</title><date>2017-01-25</date><risdate>2017</risdate><abstract>A pneumatic tire having a circumferential tread (2) comprising an outer tread cap layer (3) and an underlying sub tread cap layer (4) is disclosed. The outer tread cap layer (3) is of a rubber composition comprising conjugated diene based elastomers comprising 20 to 80 phr of natural cis 1,4-polyisoprene rubber (NR) and 80 to 20 phr of cis 1,4-polybutadiene rubber (BR), wherein the polybutadiene rubber (BR) comprises a combination of a designated (BR1) and a specialized (BR2) cis 1,4-polybutadiene rubber. The underlying sub tread layer (4) is of a rubber composition comprising conjugated diene based elastomers comprising 40 to 60 phr of natural cis 1,4-polyisoprene rubber (NR) and 60 to 40 phr of cis 1,4-polybutadiene rubber (BR), wherein the polybutadiene rubber (BR) comprises a combination of the designated (BR1) and the specialized (BR2) cis 1,4-polybutadiene rubber. The specialized cis 1,4-polyisoprene rubber has a microstructure comprising 90 to 99 percent cis 1,4-isomeric units, a number average molecular weight (Mn) in a range of from 90,000 to 220,000 and a heterogeneity index (Mw/Mn) in a range of from 2.5/1 to 5/1. The designated cis 1,4-polybutadiene rubber has a microstructure comprising 96 to 99 percent cis 1,4-isomeric units, a number average molecular weight (Mn) in a range of from 150,000 to 300,000 and a heterogeneity index (Mw/Mn) in a range of from 1.5/1 to 2/1.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES OR ARRANGEMENTS RELATED TO TYRES METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS VEHICLE TYRES VEHICLES IN GENERAL |
| title | TIRE WITH STRATIFIED TREAD COMPOSITION |
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