DE68907931D1 - Mikroporoese asymmetrische membranen aus syndiotaktischen vinylaromatischen polymeren und verfahren zu deren herstellung. - Google Patents

Mikroporoese asymmetrische membranen aus syndiotaktischen vinylaromatischen polymeren und verfahren zu deren herstellung.

Info

Publication number
DE68907931D1
DE68907931D1 DE8989101975T DE68907931T DE68907931D1 DE 68907931 D1 DE68907931 D1 DE 68907931D1 DE 8989101975 T DE8989101975 T DE 8989101975T DE 68907931 T DE68907931 T DE 68907931T DE 68907931 D1 DE68907931 D1 DE 68907931D1
Authority
DE
Germany
Prior art keywords
production
vinylaromatic polymers
asymmetrical membranes
syndiotactic vinylaromatic
microporous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE8989101975T
Other languages
English (en)
Other versions
DE68907931T2 (de
Inventor
Ritchie A Wessling
Chieh-Chun Chau
Alan F Burmester
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Application granted granted Critical
Publication of DE68907931D1 publication Critical patent/DE68907931D1/de
Publication of DE68907931T2 publication Critical patent/DE68907931T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/28—Polymers of vinyl aromatic compounds
DE89101975T 1988-02-11 1989-02-04 Mikroporöse asymmetrische Membranen aus syndiotaktischen vinylaromatischen Polymeren und Verfahren zu deren Herstellung. Expired - Fee Related DE68907931T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/154,777 US4859339A (en) 1988-02-11 1988-02-11 Microporous membranes of syndiotactic vinylaromatic polymers

Publications (2)

Publication Number Publication Date
DE68907931D1 true DE68907931D1 (de) 1993-09-09
DE68907931T2 DE68907931T2 (de) 1994-01-20

Family

ID=22552733

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89101975T Expired - Fee Related DE68907931T2 (de) 1988-02-11 1989-02-04 Mikroporöse asymmetrische Membranen aus syndiotaktischen vinylaromatischen Polymeren und Verfahren zu deren Herstellung.

Country Status (5)

Country Link
US (1) US4859339A (de)
EP (1) EP0328012B1 (de)
JP (1) JPH024840A (de)
BR (1) BR8900650A (de)
DE (1) DE68907931T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5169893A (en) * 1988-09-01 1992-12-08 The Dow Chemical Company Mixtures containing stereoregular polystyrene
US4976901A (en) * 1989-07-14 1990-12-11 The Dow Chemical Company Microporous membranes from isotactic polystyrene and syndiotactic polystyrene
ATE129430T1 (de) * 1989-07-14 1995-11-15 Dow Chemical Co Isotrope oder anisotrope mikroporöse membranen aus syndiotaktischem polystyrol und herstellungsverfahren.
US4980101A (en) * 1989-07-14 1990-12-25 The Dow Chemical Company Anisotropic microporous syndiotactic polystyrene membranes and a process for preparing the same
US4927535A (en) * 1989-07-14 1990-05-22 The Dow Chemical Company Microporous membranes from isotactic polystyrene and syndiotactic polystyrene
US5571415A (en) * 1994-11-02 1996-11-05 Rohm And Haas Company Method for preparing porous polymer structures
US6183856B1 (en) * 1996-07-25 2001-02-06 Mobil Oil Corporation Opaque polymeric films and processes for making same
US5889069A (en) * 1997-07-15 1999-03-30 The Dow Chemical Company High temperature syndiotactic styrene polymer foam
JP5466383B2 (ja) * 2008-08-08 2014-04-09 出光興産株式会社 Ｎ，ｎ−ジメチルカルバミン酸アルキルの製造方法、並びにｎ，ｎ−ジメチルカルバミン酸アルキルを含有する洗浄剤およびポリマー溶液

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB895082A (en) * 1960-03-12 1962-05-02 Membranfilter Ges G M B H Improvements in or relating to the production of membrane filters
US3567810A (en) * 1968-04-01 1971-03-02 Amicon Corp Process for making high-flow anisotropic membranes
US3615024A (en) * 1968-08-26 1971-10-26 Amicon Corp High flow membrane
US3709774A (en) * 1970-05-13 1973-01-09 Gen Electric Preparation of asymmetric polymer membranes
US3896061A (en) * 1972-08-16 1975-07-22 Toray Industries Semi-permeable membranes, their preparation and their use
US3876738A (en) * 1973-07-18 1975-04-08 Amf Inc Process for producing microporous films and products
US4020230A (en) * 1975-10-03 1977-04-26 The Dow Chemical Company Microporous polyethylene hollow fibers and process of preparing them
US4539256A (en) * 1982-09-09 1985-09-03 Minnesota Mining And Manufacturing Co. Microporous sheet material, method of making and articles made therewith
US4673695A (en) * 1985-10-08 1987-06-16 The United States Of America As Represented By The United States Department Of Energy Low density microcellular foams
JPS62187708A (ja) * 1985-11-11 1987-08-17 Idemitsu Kosan Co Ltd スチレン系重合体の製造法
JPH0723428B2 (ja) * 1986-09-24 1995-03-15 出光興産株式会社 スチレン系重合体の成形方法
JPH07119306B2 (ja) * 1988-01-13 1995-12-20 出光興産株式会社 熱可塑性樹脂発泡体とその製造方法

Also Published As

Publication number Publication date
BR8900650A (pt) 1989-10-10
JPH024840A (ja) 1990-01-09
US4859339A (en) 1989-08-22
EP0328012B1 (de) 1993-08-04
DE68907931T2 (de) 1994-01-20
EP0328012A2 (de) 1989-08-16
EP0328012A3 (en) 1990-05-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee