利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.065 秒)

    Process for making soil release polymer granules
    5.
    发明授权
    Process for making soil release polymer granules 失效

    公开(公告)号：US5700386A

    公开(公告)日：1997-12-23

    申请号：US694133

    申请日：1996-08-08

    申请人： Benjamin Edgar Chapman ,  Michael Timothy Creedon

    发明人： Benjamin Edgar Chapman ,  Michael Timothy Creedon

    IPC分类号： C08J3/14 ,  C08G63/688 ,  C08J3/12 ,  C11D1/14 ,  C11D1/22 ,  C11D1/72 ,  C11D1/83 ,  C11D3/00 ,  C11D3/37 ,  C11D11/00 ,  C11D17/06 ,  C11D1/722 ,  C08K5/06 ,  C08K31/06

    CPC分类号： C11D17/065 ,  C08G63/6886 ,  C08J3/12 ,  C11D1/72 ,  C11D1/83 ,  C11D11/0082 ,  C11D3/0036 ,  C11D3/3715 ,  C08J2367/00 ,  C11D1/143 ,  C11D1/22

    摘要： The subject invention involves processes for making granular compositions comprising soil release polymers, the polymers comprising at least about 10% of substantially linear esters having a backbone; the esters being uncapped or end-capped on one or both ends of the backbone; the esters comprising in their backbones oxyalkyleneoxy units and hydrophobic aryldicarbonyl units; the esters having a molecular weight of from about 500 to about 20,000; the polymers if in solid state having the tendency when exposed to moisture to spontaneously rearrange from an amorphous form which is readily soluble in water to a crystalline form which is relatively insoluble in water; the process comprising the following steps:a) taking the soil release polymers, in which are dispersed from 0% to about 25% alkylaryl or alkyl sulfonate crystallization-reducing stabilizers, in molten state at a temperature of at least about 180.degree. C., and rapidly dissolving the molten polymers in water, forming an aqueous polymer solution having a polymer concentration of up to about 50%, the average temperature of the solution being maintained below about 50.degree. C.; b) dispersing a nonionic surfactant in the molten polymers or in the water prior to step a), the surfactant being an alkylethoxy alcohol nonionic surfactant which is a condensation product of alkylalcohol and ethylene oxide, the alkyl portion being linear or branched, saturated or unsaturated, having from about 8 to about 22 carbon atoms, there being on average of from about 10 to about 100 moles ethoxy per mole surfactant, the nonionic surfactant being from about 2% to about 20% of the aqueous polymer solution, on a dry weight basis; and c) drying the aqueous polymer solution of b), thereby producing a granular composition having a water content of less than about 3%. The subject invention also involves soil release polymer granules comprising such polymers and nonionic surfactant and, optionally, stabilizers.

    Process for making soil release polymer granules
    9.
    发明授权
    Process for making soil release polymer granules 失效

    公开(公告)号：US5770558A

    公开(公告)日：1998-06-23

    申请号：US918917

    申请日：1997-08-27

    申请人： Benjamin Edgar Chapman ,  Michael Timothy Creedon

    发明人： Benjamin Edgar Chapman ,  Michael Timothy Creedon

    IPC分类号： C08J3/14 ,  C08G63/688 ,  C08J3/12 ,  C11D1/14 ,  C11D1/22 ,  C11D1/72 ,  C11D1/83 ,  C11D3/00 ,  C11D3/37 ,  C11D11/00 ,  C11D17/06 ,  D06M15/00 ,  C11D7/26

    CPC分类号： C11D17/065 ,  C08G63/6886 ,  C08J3/12 ,  C11D1/72 ,  C11D1/83 ,  C11D11/0082 ,  C11D3/0036 ,  C11D3/3715 ,  C08J2367/00 ,  C11D1/143 ,  C11D1/22

    摘要： The subject invention involves processes for making granular compositions comprising soil release polymers, the polymers comprising at least about 10% of substantially linear esters having a backbone; the esters being uncapped or end-capped on one or both ends of the backbone; the esters comprising in their backbones oxyalkyleneoxy units and hydrophobic aryldicarbonyl units; the esters having a molecular weight of from about 500 to about 20,000; the polymers if in solid state having the tendency when exposed to moisture to spontaneously rearrange from an amorphous form which is readily soluble in water to a crystalline form which is relatively insoluble in water; the process comprising the following steps:a) taking the soil release polymers, in which are dispersed from 0% to about 25% alkylaryl or alkyl sulfonate crystallization-reducing stabilizers, in molten state at a temperature of at least about 180.degree. C., and rapidly dissolving the molten polymers in water, forming an aqueous polymer solution having a polymer concentration of up to about 50%, the average temperature of the solution being maintained below about 50.degree. C.; b) dispersing a nonionic surfactant in the molten polymers or in the water prior to step a), the surfactant being an alkylethoxy alcohol nonionic surfactant which is a condensation product of alkylalcohol and ethylene oxide, the alkyl portion being linear or branched, saturated or unsaturated, having from about 8 to about 22 carbon atoms, there being on average of from about 10 to about 100 moles ethoxy per mole surfactant, the nonionic surfactant being from about 2% to about 20% of the aqueous polymer solution, on a dry weight basis; and c) drylng the aqueous polymer solution of b), thereby producing a granular composition having a water content of less than about 3%. The subject invention also involves soil release polymer granules comprising such polymers and nonionic surfactant and, optionally, stabilizers.