U S patant 4517308 1985.docx

U S patant 4517308 1985.docx

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USpatant45173081985

Methodofproducingasorptivebody,particularlyforeliminatingodors,airfreshening,etc.andtheresultantproduct

Abstract

Theaimoftheinventionwastofindamethodofproducingasorptivebody,tobeusedespeciallywithobjectivessuchastheeliminationofodorsandairfreshening.Intheinventedprocessagranularorpowderedsolidcomponentconsistingofasorptivematerial,e.g.activecarbon,oracompoundcontainingsuchamaterial,ismixedwithabindingagent,bywhichitisgenerallyfixedtoacarriersubstance.Theessenceoftheinventionisthatatleastpartofthefinely-groundsolidcomponentismixedwithaliquidsorbate;onlythenitiscombinedwiththedissolvedbindingagent.Inasubsequentoperationheatisappliedtothemixture,therebyexpellingthesorbate.Theheatcausesporesandcapillariestoformwithinthebindingagent,thusenablingairtoenterintothesorptivesubstancesdepositedinthebindingagentandsoeffectinganincreaseintheactiveareaofthesurfaceofthebody.Theinventedprocesscanbeappliedtosuchproductsasfiltermats,airfresheners,innersolesforshoesetc.

Inventors:

Ehlenz;Peter（Konigswinter,DE）,Irgel;Lutz（St.Augustin,DE）

Assignee:

ColloGmbH（Bornheim-Hersel,DE）

FamilyID:

6140853

Appl.No.:

06/413,310

Filed:

August31,1982

ForeignApplicationPriorityData

Sep4,1981[DE]3135025

CurrentU.S.Class:

502/401;264/45.3;264/46.4;264/53;264/DIG.13;264/DIG.5;264/DIG.7;36/30A;36/43;422/4;422/5;428/316.6;428/317.9;428/905;502/402;96/153

CurrentCPCClass:

A43B1/0045（20130101）;A43B17/102（20130101）;B01J20/28023（20130101）;B01J20/2803（20130101）;B01J20/28033（20130101）;B01J20/28042（20130101）;F24C15/2035（20130101）;B01J20/28045（20130101）;Y10T428/249981（20150401）;Y10S264/07（20130101）;Y10S264/05（20130101）;Y10S428/905（20130101）;Y10S264/13（20130101）;Y10T428/249986（20150401）

CurrentInternationalClass:

A43B17/10（20060101）;A43B17/00（20060101）;B01J20/28（20060101）;F24C15/20（20060101）;B29D027/00（）;B01J020/10（）;B01J020/20（）;B01J020/30（）

FieldofSearch:

;264/53,DIG.7,DIG.5,DIG.13,45.3,46.4;36/43,3A;502/401,402;428/316.6,317.9

ReferencesCited[ReferencedBy]

U.S.PatentDocuments

2907075October1959Newby

3094492June1963Milleretal.

3454502July1969Hiltgenetal.

3813347May1974Hayes

4051098September1977Takemuraetal.

4155123May1979Popper

4235027November1980Singh

ForeignPatentDocuments

2422574Nov1975DE

PrimaryExaminer:

Anderson;Philip

Attorney,AgentorFirm:

Pollock,Vandesande&Priddy

Claims

Iclaim:

1.Inamethodofproducingasorptivebodyforuseinfilteringairand/orineliminatingodors,providingairfreshening,andthelike,inwhichfinelygroundsolidparticlesofasorptivesubstanceoracompositioncontainingasorptivesubstancearemixedwithabindingagentandaretherebyboundintoacohesivebody,theimprovementcomprising:

combiningsaidfinelygroundsolidparticleswithatleastoneliquidsorbatebeforemixingsaidsolidparticleswithabindingagent,saidsolidparticleshavingporesandcapillariesforabsorbingsaidsorbate,saidsorbatebeingabsorbableinsaidporesandcapillaries,andtheconditionsofsaidcombiningbeingsuchthatsaidsorbateisabsorbedinsaidcapillariesandpores;

mixingsaidcombinedsolidparticlesandabsorbedsorbatewithabindingagentcomprisingasettablebindercompositioninaliquidsolvent,saidbindercompositionbeingsettableuponevaporationofsaidliquidsolventatatemperaturehigherthantheboilingpointofsaidsorbatesoastobindsaidsolidparticlestogetherasacohesivesorptivebody;

shapingsaidmixtureand/orapplyingsaidmixturetoacarrierbodysoastoformacohesivesorptivebodyforuseinfilteringairand/orineliminatingodors,providingairfresheningandthelike;and,

applyingheattosaidshapedand/orsupportedmixturesoastocauseevaporationofsaidliquidsolventfromsaidmixture,settingofsaidbindercompositionsoastobindsaidsolidparticlestogetherinsaidcohesivesorptivebody,andexpulsionofsaidsorbatefromsaidsolidparticlesduringthesettingofsaidbindercomposition,theamountofsaidbindercompositionnotexceeding30%oftheweightofsaidsorptivesubstanceandtheamountofsaidsorbateexpelledfromsaidsolidparticlesduringsettingofsaidbindercompositionprovidingaconnectedopensystemofporesandcapillariesinsaidbindercompositionforpassageofairthroughsaidcohesivebodyandcontactofsaidairwithsaidsorptivesubstance.

2.Amethodaccordingtoclaim1,characterizedbysupportingsaidmixtureonacarrierbycoatingorimpregnatingaporouscarriermaterialwiththemixtureofclaim1priortotheapplicationofheat.

3.Amethodaccordingtoclaim2,characterizedbytheuseofaporoussyntheticfoam,fleece-likesubstance,orwovenorspunfabricassaidcarriermaterial.

4.Amethodofproducingasorptivebodyaccordingtoclaim1,characterizedbytheuseofatleastoneofthefollowingadsorptivematerialsasasorptivesubstance:

activecarbon,silicagel,amolecularsieve,bentonite,perlite,pumicestone,infusionearth,powderedfoammaterial,capillary-activefibrousmaterial.

5.Amethodaccordingtoclaim4,characterizedbytheuseofhydrocarbon,ofanalcohol（e.g.ethyl,methyl,propylalcohol）,anester,anketone,chlorinatedhydrocarbon,fluorocarbonsasasorbate.

6.Amethodaccordingtoclaim5,characterizedbytheuseofthesolventinthebindingagentasasorbate.

7.Amethodaccordingtoclaim6,characterizedbytheuseofasyntheticadhesive,e.g.apolyurethaneadhesive.

8.Amethodaccordingtoclaim1,characterizedbytheadditionofasorbatewithalowboilingpointtoapartofthefinely-groundsolidandofatleastonesorbatewitharelativelyhigherboilingpointtoanotherpartofthegroundsolidcomponent;aftermixturewithabindingmaterialthetwopartsaresubjectedtoheattreatmentatatemperaturebetweentheboilingpointsofthetwosorbates.

9.Amethodaccordingtoclaim8,characterizedbytheuseofanetherialoilasasorbatewithahigherboilingpoint,e.g.perfumeoil,orasolventcontainingadissolvedscent.

10.Amethodaccordingtoclaim8,characterizedbytheuseofanbiocidesubstance（e.g.alkyldimethyl-amoniumchloride）asthesorbatewiththehigherboilingpointorasolventcontainingsuchasubstance.

11.Amethodaccordingtoclaim8,characterizedbythesamefinely-groundsolidcomponent,e.g.activecarbon,beingusedtotakeupbothsorbates.

12.Amethodaccordingtoclaim8,characterizedbythehigher-boilingsorbatebeingtakenupintoanexpandedorfoamedhollow-particledporousgranularmaterialsuchasperlite.

13.Amethodaccordingtoclaim8,characterizedbytheadditionofasubstancewhichprovidesadhesion,e.g.thetensidesnonylphenol-polyglyco-etherorpolyethyleneglycol,tothesorbatewiththehigherboilingtemperature.

14.Amethodaccordingtoclaim1,characterizedbyheatbeingappliedbeforethebindingagentisfullyset.

15.Amethodaccordingtoclaim13,characterizedbytheapplicationofheattoatemperatureatleastbetween132.degree.F.and152.degree.F.higherthantheboilingpointofthesorbatewhichistobeexpelled.

16.Amethodaccordingtoclaim1inwhichtheamountofthesorbate,inpercentage-weightterms,isatleastapproximatelyequaltotheamountoffinelygroundsolidcomponentintowhichitisadsorbed,andinwhichtheweightofthebindingagentisbetween5and30%oftheweightofthefinelygroundsorptivesubstance.

17.Amethodaccordingtoclaim16inwhichtheweightofthebindingagentisbetween5and15%oftheweightofthefinelygroundsorptivesubstance.

18.Theproductmadebythemethodofclaim1toproduceafiltermatand/oranairpurifier,especiallyinkitchenextractor-hoods,air-conditioningdevices,whereinthegranularsorptivebody,e.g.activecarbon,takenupinthebindingagentisfastenedtoacarrier（11,14）,e.g.afibrousfleece,foamstrip.

19.Aproductmadebythemethodofclaim11,whereinthegranularsorptivesubstance,e.g.activecarbon,istakenupinthebindingagentisfastenedtoacarrier,e.g.afibrousfleeceorfoamcut-outandwhereinapartofthesorptivesubstanceisimpregnatedwithanaromaticagentwithahighboilingpoint,e.g.perfumeoil,theproductbeingusedasinnersoleofashoeorasanairfreshenerespeciallyinkitchenextractor-hoodsandair-conditioningdevices.

20.Aproductaccordingtoclaim19madebytheadditionalmethodstepoftheadditionofasubstancewhichprovidesadhesiontothesorbatewiththehigherboilingtemperature.

21.Theproductmadebythemethodofclaim10,whereinapartofthehigher-boilingsorbatecontainingabiocidesubstance,e.g.alkyldimethylammoniumchlorideorasolventcontainingsuchasubstance.

Description

TECHNICALFIELD

Theinventionrelatestoamethodofproducingasorptivebodyfortheeliminationofodours,airfresheningetc,wherebyafinely-groundsolidcomponentconsistingofasorptivesubstanceorcontainingsuchasubstanceinitscompoundisaddedtoabindingagentbywhichitisfixedintoacoherentwhole.Theinventionisapplicabletoproductswhosemainpurposeistheeliminationofsmellsandwhosechiefuseisinkitchenextractor-hoods,air-conditioningdevicesetc.asafilterorasastaticairpurifierorfreshairdispenserorasinnersolesforshoes.

BACKGROUNDART

Forextractorhoodsandotherair-purifyingdevicesgranularfilteringmaterialsareused,particularlyadsorptivematerials--suchasactivecarbon--orchemisorptivematerials;thesepourabl