NL176176C - Werkwijze ter bereiding van polypiperazineamiden en daaruit vervaardigde anisotrope membranen. - Google Patents

Werkwijze ter bereiding van polypiperazineamiden en daaruit vervaardigde anisotrope membranen.

Info

Publication number: NL176176C
Authority: NL; Netherlands
Prior art keywords: anisotrope; polypiperazine; amids; preparing; made therefrom
Prior art date: 1973-05-07

Application number

NLAANVRAGE7405900,A

Other languages

English (en)

Dutch (nl)

Other versions

NL176176B (nl

NL7405900A (xx

Original Assignee

Montedison Spa

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.)

1973-05-07

Filing date

1974-05-02

Publication date

1985-03-01

1974-05-02 Application filed by Montedison Spa filed Critical Montedison Spa

1974-11-11 Publication of NL7405900A publication Critical patent/NL7405900A/xx

1984-10-01 Publication of NL176176B publication Critical patent/NL176176B/xx

1985-03-01 Application granted granted Critical

1985-03-01 Publication of NL176176C publication Critical patent/NL176176C/xx

Classifications

- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/42—Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
- 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
- B01D71/56—Polyamides, e.g. polyester-amides
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/40—Polyamides containing oxygen in the form of ether groups

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Health & Medical Sciences (AREA)
Medicinal Chemistry (AREA)
Polymers & Plastics (AREA)
Organic Chemistry (AREA)
Separation Using Semi-Permeable Membranes (AREA)
Polyamides (AREA)
Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

NLAANVRAGE7405900,A 1973-05-07 1974-05-02 Werkwijze ter bereiding van polypiperazineamiden en daaruit vervaardigde anisotrope membranen. NL176176C (nl)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT23770/73A IT987156B (it)	1973-05-07	1973-05-07	Polipiperazinammidi copolipiperazi nammidi e membrane per osmosi in versa a base di tali materiali polimerici

Publications (3)

Publication Number	Publication Date
NL7405900A NL7405900A (xx)	1974-11-11
NL176176B NL176176B (nl)	1984-10-01
NL176176C true NL176176C (nl)	1985-03-01

Family

ID=11209824

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NLAANVRAGE7405900,A NL176176C (nl)	1973-05-07	1974-05-02	Werkwijze ter bereiding van polypiperazineamiden en daaruit vervaardigde anisotrope membranen.

Country Status (11)

Country	Link
JP (1)	JPS575565B2 (xx)
BE (1)	BE814603A (xx)
CA (1)	CA1029496A (xx)
DE (1)	DE2421353A1 (xx)
DK (1)	DK157978C (xx)
ES (1)	ES426000A1 (xx)
FR (1)	FR2228805B1 (xx)
GB (1)	GB1422767A (xx)
IL (1)	IL44761A (xx)
IT (1)	IT987156B (xx)
NL (1)	NL176176C (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
IT1040274B (it) *	1975-07-30	1979-12-20	Consiglio Nazionale Ricerche	Procedimento di preparazione di membrane anisotrope supportate per osmosi inversa a base di poliammidi sintetiche
US4433117A (en) *	1982-03-23	1984-02-21	Kuraray Co., Ltd.	Copolyesteramide and production of the same

1973
- 1973-05-07 IT IT23770/73A patent/IT987156B/it active
1974
- 1974-05-02 NL NLAANVRAGE7405900,A patent/NL176176C/xx not_active IP Right Cessation
- 1974-05-02 DK DK240274A patent/DK157978C/da active
- 1974-05-03 IL IL44761A patent/IL44761A/en unknown
- 1974-05-03 DE DE2421353A patent/DE2421353A1/de not_active Withdrawn
- 1974-05-04 JP JP4929974A patent/JPS575565B2/ja not_active Expired
- 1974-05-06 ES ES426000A patent/ES426000A1/es not_active Expired
- 1974-05-06 FR FR7415547A patent/FR2228805B1/fr not_active Expired
- 1974-05-06 BE BE143969A patent/BE814603A/xx unknown
- 1974-05-07 GB GB1994674A patent/GB1422767A/en not_active Expired
- 1974-05-07 CA CA199,175A patent/CA1029496A/en not_active Expired

Also Published As

Publication number	Publication date
DK157978C (da)	1990-08-27
ES426000A1 (es)	1976-11-01
CA1029496A (en)	1978-04-11
NL176176B (nl)	1984-10-01
GB1422767A (en)	1976-01-28
IT987156B (it)	1975-02-20
DK157978B (da)	1990-03-12
FR2228805A1 (xx)	1974-12-06
BE814603A (fr)	1974-11-06
IL44761A0 (en)	1974-07-31
DE2421353A1 (de)	1974-11-21
IL44761A (en)	1977-10-31
JPS575565B2 (xx)	1982-01-30
NL7405900A (xx)	1974-11-11
JPS5081978A (xx)	1975-07-03
FR2228805B1 (xx)	1976-12-17

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Legal Events

Date	Code	Title
1981-03-25	BA	A request for search or an international-type search has been filed
1981-04-27	BB	A search report has been drawn up
1981-06-01	BC	A request for examination has been filed
1985-01-01	A85	Still pending on 85-01-01
1994-06-16	V4	Discontinued because of reaching the maximum lifetime of a patent