HIGH TEMPERATURE POLYURETHANE/UREA ELASTOMERS
The present invention relates to molded polyurethane/urea elastomers, and specifically to improved polyurethane/urea elastomers having high temperatur e stability to about 140-150 ~C and low temperature flexibility at about -35-( - 40) ~C, for use in dynamic applications. These elastomers are partic...
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| creator | WU, WILLIAM W. L STAMP, JAMES R BROTHERS, JOE |
| description | The present invention relates to molded polyurethane/urea elastomers, and specifically to improved polyurethane/urea elastomers having high temperatur e stability to about 140-150 ~C and low temperature flexibility at about -35-( - 40) ~C, for use in dynamic applications. These elastomers are particularly useful for application in belts, specifically in automotive timing or synchronous belts, V-belts, multi V-ribbed or micro-ribbed belts, flat belti ng and the like. The polyurethane/urea elastomers of the present invention are prepared by reacting polyisocyanate prepolymers with symmetric aromatic primary diamine chain extenders, mixtures of symmetric aromatic primary diamine chain extenders and aromatic secondary diamine chain extenders, or mixtures of symmetric aromatic primary diamine chain extenders and non- oxidative polyols, which are all chosen to eliminate the need for catalysts via standard molding processes, and to improve phase separation. The polyisocyanate prepolymers are reaction products of polyols which are nonoxidative at high temperatures, such as polycarbonate polyols, polyester polyols, or mixtures thereof, with organic polyisocyanates which are either compact, symmetric and aromatic, such as para-phenylene diisocyanate, 1,5- naphthalene diisocyanate, and 2,6-toluene diisocyanate, or are aliphatic and possess trans or trans,trans geometric structure, such as trans-1,4- cyclohexane diisocyanate and trans,trans-4,4'-dicyclohexylmethyl diisocyanat e. |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_CA2194992C</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>CA2194992C</sourcerecordid><originalsourceid>FETCH-epo_espacenet_CA2194992C3</originalsourceid><addsrcrecordid>eNrjZND18HT3UAhx9Q1wDXIMCQ1yVQjw94kE0iEejn6u-kCGo4Krj2NwiL-va1AwDwNrWmJOcSovlOZmkHdzDXH20E0tyI9PLS5ITE7NSy2Jd3Y0MrQ0sbQ0cjYmrAIAWDElCw</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>HIGH TEMPERATURE POLYURETHANE/UREA ELASTOMERS</title><source>esp@cenet</source><creator>WU, WILLIAM W. L ; STAMP, JAMES R ; BROTHERS, JOE</creator><creatorcontrib>WU, WILLIAM W. L ; STAMP, JAMES R ; BROTHERS, JOE</creatorcontrib><description>The present invention relates to molded polyurethane/urea elastomers, and specifically to improved polyurethane/urea elastomers having high temperatur e stability to about 140-150 ~C and low temperature flexibility at about -35-( - 40) ~C, for use in dynamic applications. These elastomers are particularly useful for application in belts, specifically in automotive timing or synchronous belts, V-belts, multi V-ribbed or micro-ribbed belts, flat belti ng and the like. The polyurethane/urea elastomers of the present invention are prepared by reacting polyisocyanate prepolymers with symmetric aromatic primary diamine chain extenders, mixtures of symmetric aromatic primary diamine chain extenders and aromatic secondary diamine chain extenders, or mixtures of symmetric aromatic primary diamine chain extenders and non- oxidative polyols, which are all chosen to eliminate the need for catalysts via standard molding processes, and to improve phase separation. The polyisocyanate prepolymers are reaction products of polyols which are nonoxidative at high temperatures, such as polycarbonate polyols, polyester polyols, or mixtures thereof, with organic polyisocyanates which are either compact, symmetric and aromatic, such as para-phenylene diisocyanate, 1,5- naphthalene diisocyanate, and 2,6-toluene diisocyanate, or are aliphatic and possess trans or trans,trans geometric structure, such as trans-1,4- cyclohexane diisocyanate and trans,trans-4,4'-dicyclohexylmethyl diisocyanat e.</description><edition>6</edition><language>eng ; fre</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVINGPURPOSES ; BLASTING ; CHAINS ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; ENGINEERING ELEMENTS AND UNITS ; FITTINGS PREDOMINANTLY USED THEREFOR ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; LIGHTING ; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ; MECHANICAL ENGINEERING ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; PERFORMING OPERATIONS ; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; THERMAL INSULATION IN GENERAL ; TRANSPORTING ; WEAPONS ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>2002</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=20021126&DB=EPODOC&CC=CA&NR=2194992C$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20021126&DB=EPODOC&CC=CA&NR=2194992C$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WU, WILLIAM W. L</creatorcontrib><creatorcontrib>STAMP, JAMES R</creatorcontrib><creatorcontrib>BROTHERS, JOE</creatorcontrib><title>HIGH TEMPERATURE POLYURETHANE/UREA ELASTOMERS</title><description>The present invention relates to molded polyurethane/urea elastomers, and specifically to improved polyurethane/urea elastomers having high temperatur e stability to about 140-150 ~C and low temperature flexibility at about -35-( - 40) ~C, for use in dynamic applications. These elastomers are particularly useful for application in belts, specifically in automotive timing or synchronous belts, V-belts, multi V-ribbed or micro-ribbed belts, flat belti ng and the like. The polyurethane/urea elastomers of the present invention are prepared by reacting polyisocyanate prepolymers with symmetric aromatic primary diamine chain extenders, mixtures of symmetric aromatic primary diamine chain extenders and aromatic secondary diamine chain extenders, or mixtures of symmetric aromatic primary diamine chain extenders and non- oxidative polyols, which are all chosen to eliminate the need for catalysts via standard molding processes, and to improve phase separation. The polyisocyanate prepolymers are reaction products of polyols which are nonoxidative at high temperatures, such as polycarbonate polyols, polyester polyols, or mixtures thereof, with organic polyisocyanates which are either compact, symmetric and aromatic, such as para-phenylene diisocyanate, 1,5- naphthalene diisocyanate, and 2,6-toluene diisocyanate, or are aliphatic and possess trans or trans,trans geometric structure, such as trans-1,4- cyclohexane diisocyanate and trans,trans-4,4'-dicyclohexylmethyl diisocyanat e.</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVINGPURPOSES</subject><subject>BLASTING</subject><subject>CHAINS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>FITTINGS PREDOMINANTLY USED THEREFOR</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</subject><subject>MECHANICAL ENGINEERING</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>PERFORMING OPERATIONS</subject><subject>PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZND18HT3UAhx9Q1wDXIMCQ1yVQjw94kE0iEejn6u-kCGo4Krj2NwiL-va1AwDwNrWmJOcSovlOZmkHdzDXH20E0tyI9PLS5ITE7NSy2Jd3Y0MrQ0sbQ0cjYmrAIAWDElCw</recordid><startdate>20021126</startdate><enddate>20021126</enddate><creator>WU, WILLIAM W. L</creator><creator>STAMP, JAMES R</creator><creator>BROTHERS, JOE</creator><scope>EVB</scope></search><sort><creationdate>20021126</creationdate><title>HIGH TEMPERATURE POLYURETHANE/UREA ELASTOMERS</title><author>WU, WILLIAM W. L ; STAMP, JAMES R ; BROTHERS, JOE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CA2194992C3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>2002</creationdate><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVINGPURPOSES</topic><topic>BLASTING</topic><topic>CHAINS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>FITTINGS PREDOMINANTLY USED THEREFOR</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</topic><topic>MECHANICAL ENGINEERING</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>PERFORMING OPERATIONS</topic><topic>PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>WU, WILLIAM W. L</creatorcontrib><creatorcontrib>STAMP, JAMES R</creatorcontrib><creatorcontrib>BROTHERS, JOE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WU, WILLIAM W. L</au><au>STAMP, JAMES R</au><au>BROTHERS, JOE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HIGH TEMPERATURE POLYURETHANE/UREA ELASTOMERS</title><date>2002-11-26</date><risdate>2002</risdate><abstract>The present invention relates to molded polyurethane/urea elastomers, and specifically to improved polyurethane/urea elastomers having high temperatur e stability to about 140-150 ~C and low temperature flexibility at about -35-( - 40) ~C, for use in dynamic applications. These elastomers are particularly useful for application in belts, specifically in automotive timing or synchronous belts, V-belts, multi V-ribbed or micro-ribbed belts, flat belti ng and the like. The polyurethane/urea elastomers of the present invention are prepared by reacting polyisocyanate prepolymers with symmetric aromatic primary diamine chain extenders, mixtures of symmetric aromatic primary diamine chain extenders and aromatic secondary diamine chain extenders, or mixtures of symmetric aromatic primary diamine chain extenders and non- oxidative polyols, which are all chosen to eliminate the need for catalysts via standard molding processes, and to improve phase separation. The polyisocyanate prepolymers are reaction products of polyols which are nonoxidative at high temperatures, such as polycarbonate polyols, polyester polyols, or mixtures thereof, with organic polyisocyanates which are either compact, symmetric and aromatic, such as para-phenylene diisocyanate, 1,5- naphthalene diisocyanate, and 2,6-toluene diisocyanate, or are aliphatic and possess trans or trans,trans geometric structure, such as trans-1,4- cyclohexane diisocyanate and trans,trans-4,4'-dicyclohexylmethyl diisocyanat e.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVINGPURPOSES BLASTING CHAINS CHEMISTRY COMPOSITIONS BASED THEREON ENGINEERING ELEMENTS AND UNITS FITTINGS PREDOMINANTLY USED THEREFOR GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | HIGH TEMPERATURE POLYURETHANE/UREA ELASTOMERS |
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