Flexible polyurethane foam
A method of preparing a flexible polyurethane foam having a tensile strength greater than 2,5 kilograms per square centimetre comprises compressing for a period of from one to ten hours a polyurethane foam product of less tensile strength at a compression ratio in excess of 2:1 in the presence of wa...
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| creator | TAYLOR STANLEY DOUGLAS FISHBEIN JOHN |
| description | A method of preparing a flexible polyurethane foam having a tensile strength greater than 2,5 kilograms per square centimetre comprises compressing for a period of from one to ten hours a polyurethane foam product of less tensile strength at a compression ratio in excess of 2:1 in the presence of water and at a temperature of 100 DEG C. to 120 DEG C. In an example polypropylene glycol and tolylene diisocyanate are reacted to give a prepolymer which is converted to a foam by reaction with water, N-methylmorpholine and triethylamine. Sheets of the product of thicknesses from 1 cm. to 2,5 cm. are moistened with water and then for 5 hours compressed to a thickness of 0,4 cm. in a press heated to 100 DEG C. Using compression ratios of 2,5, 3,75, 5,0 and 6,25, products are obtained (from material of tensile strength 1,5) having T.S. values of 3,6, 5,3, 7,9 and 9,6.ALSO:A method of preparing a flexible polyurethane having a tensile strength greater than 2,5 kilograms per square centimetre comprises compressing for a period of from one to ten hours a polyurethane foam product of less tensile strength at a compression ratio in excess of 2:1 in the presence of water and at a temperature of 100 DEG to 120 DEG C. In an example polypropylene glycol and tolylene diisocyanate are reacted to give a prepolymer which is converted to a foam by reaction with water, N-methylmorpholine and triethylamine. Sheets of the product of thicknesses from 1 cm to 2,5 cm. are moistened with water and then for 5 hours compressed to a thickness of 0,4 cm. in a press heated to 100 DEG C. Using compression ratios of 2,5, 3,75, 5,0 and 6,25, products are obtained (from material of tensile strength 1,5) having T.S. values of 3,6, 5,3, 7,9 and 9,6. |
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In an example polypropylene glycol and tolylene diisocyanate are reacted to give a prepolymer which is converted to a foam by reaction with water, N-methylmorpholine and triethylamine. Sheets of the product of thicknesses from 1 cm. to 2,5 cm. are moistened with water and then for 5 hours compressed to a thickness of 0,4 cm. in a press heated to 100 DEG C. Using compression ratios of 2,5, 3,75, 5,0 and 6,25, products are obtained (from material of tensile strength 1,5) having T.S. values of 3,6, 5,3, 7,9 and 9,6.ALSO:A method of preparing a flexible polyurethane having a tensile strength greater than 2,5 kilograms per square centimetre comprises compressing for a period of from one to ten hours a polyurethane foam product of less tensile strength at a compression ratio in excess of 2:1 in the presence of water and at a temperature of 100 DEG to 120 DEG C. In an example polypropylene glycol and tolylene diisocyanate are reacted to give a prepolymer which is converted to a foam by reaction with water, N-methylmorpholine and triethylamine. Sheets of the product of thicknesses from 1 cm to 2,5 cm. are moistened with water and then for 5 hours compressed to a thickness of 0,4 cm. in a press heated to 100 DEG C. Using compression ratios of 2,5, 3,75, 5,0 and 6,25, products are obtained (from material of tensile strength 1,5) having T.S. values of 3,6, 5,3, 7,9 and 9,6.</description><language>eng</language><subject>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; GENERAL PROCESSES OF COMPOUNDING ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; WORKING-UP</subject><creationdate>1962</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=19620606&DB=EPODOC&CC=GB&NR=898271A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19620606&DB=EPODOC&CC=GB&NR=898271A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAYLOR STANLEY DOUGLAS</creatorcontrib><creatorcontrib>FISHBEIN JOHN</creatorcontrib><title>Flexible polyurethane foam</title><description>A method of preparing a flexible polyurethane foam having a tensile strength greater than 2,5 kilograms per square centimetre comprises compressing for a period of from one to ten hours a polyurethane foam product of less tensile strength at a compression ratio in excess of 2:1 in the presence of water and at a temperature of 100 DEG C. to 120 DEG C. In an example polypropylene glycol and tolylene diisocyanate are reacted to give a prepolymer which is converted to a foam by reaction with water, N-methylmorpholine and triethylamine. Sheets of the product of thicknesses from 1 cm. to 2,5 cm. are moistened with water and then for 5 hours compressed to a thickness of 0,4 cm. in a press heated to 100 DEG C. Using compression ratios of 2,5, 3,75, 5,0 and 6,25, products are obtained (from material of tensile strength 1,5) having T.S. values of 3,6, 5,3, 7,9 and 9,6.ALSO:A method of preparing a flexible polyurethane having a tensile strength greater than 2,5 kilograms per square centimetre comprises compressing for a period of from one to ten hours a polyurethane foam product of less tensile strength at a compression ratio in excess of 2:1 in the presence of water and at a temperature of 100 DEG to 120 DEG C. In an example polypropylene glycol and tolylene diisocyanate are reacted to give a prepolymer which is converted to a foam by reaction with water, N-methylmorpholine and triethylamine. Sheets of the product of thicknesses from 1 cm to 2,5 cm. are moistened with water and then for 5 hours compressed to a thickness of 0,4 cm. in a press heated to 100 DEG C. Using compression ratios of 2,5, 3,75, 5,0 and 6,25, products are obtained (from material of tensile strength 1,5) having T.S. values of 3,6, 5,3, 7,9 and 9,6.</description><subject>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>GENERAL PROCESSES OF COMPOUNDING</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>WORKING-UP</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1962</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJByy0mtyEzKSVUoyM-pLC1KLclIzEtVSMtPzOVhYE1LzClO5YXS3Axybq4hzh66qQX58anFBYnJqXmpJfHuThaWFkbmho7GBBUAAJYeIf8</recordid><startdate>19620606</startdate><enddate>19620606</enddate><creator>TAYLOR STANLEY DOUGLAS</creator><creator>FISHBEIN JOHN</creator><scope>EVB</scope></search><sort><creationdate>19620606</creationdate><title>Flexible polyurethane foam</title><author>TAYLOR STANLEY DOUGLAS ; FISHBEIN JOHN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_GB898271A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1962</creationdate><topic>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>GENERAL PROCESSES OF COMPOUNDING</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>WORKING-UP</topic><toplevel>online_resources</toplevel><creatorcontrib>TAYLOR STANLEY DOUGLAS</creatorcontrib><creatorcontrib>FISHBEIN JOHN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TAYLOR STANLEY DOUGLAS</au><au>FISHBEIN JOHN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Flexible polyurethane foam</title><date>1962-06-06</date><risdate>1962</risdate><abstract>A method of preparing a flexible polyurethane foam having a tensile strength greater than 2,5 kilograms per square centimetre comprises compressing for a period of from one to ten hours a polyurethane foam product of less tensile strength at a compression ratio in excess of 2:1 in the presence of water and at a temperature of 100 DEG C. to 120 DEG C. In an example polypropylene glycol and tolylene diisocyanate are reacted to give a prepolymer which is converted to a foam by reaction with water, N-methylmorpholine and triethylamine. Sheets of the product of thicknesses from 1 cm. to 2,5 cm. are moistened with water and then for 5 hours compressed to a thickness of 0,4 cm. in a press heated to 100 DEG C. Using compression ratios of 2,5, 3,75, 5,0 and 6,25, products are obtained (from material of tensile strength 1,5) having T.S. values of 3,6, 5,3, 7,9 and 9,6.ALSO:A method of preparing a flexible polyurethane having a tensile strength greater than 2,5 kilograms per square centimetre comprises compressing for a period of from one to ten hours a polyurethane foam product of less tensile strength at a compression ratio in excess of 2:1 in the presence of water and at a temperature of 100 DEG to 120 DEG C. In an example polypropylene glycol and tolylene diisocyanate are reacted to give a prepolymer which is converted to a foam by reaction with water, N-methylmorpholine and triethylamine. Sheets of the product of thicknesses from 1 cm to 2,5 cm. are moistened with water and then for 5 hours compressed to a thickness of 0,4 cm. in a press heated to 100 DEG C. Using compression ratios of 2,5, 3,75, 5,0 and 6,25, products are obtained (from material of tensile strength 1,5) having T.S. values of 3,6, 5,3, 7,9 and 9,6.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP |
| title | Flexible polyurethane foam |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-13T14%3A12%3A31IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=TAYLOR%20STANLEY%20DOUGLAS&rft.date=1962-06-06&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EGB898271A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |