GB1107782A

GB1107782A – Improvements relating to the making of microporous sheet material
– Google Patents

GB1107782A – Improvements relating to the making of microporous sheet material
– Google Patents
Improvements relating to the making of microporous sheet material

Info

Publication number
GB1107782A

GB1107782A
GB2457464A
GB2457464A
GB1107782A
GB 1107782 A
GB1107782 A
GB 1107782A
GB 2457464 A
GB2457464 A
GB 2457464A
GB 2457464 A
GB2457464 A
GB 2457464A
GB 1107782 A
GB1107782 A
GB 1107782A
Authority
GB
United Kingdom
Prior art keywords
forming
sheet
pore
microporous
forming material
Prior art date
1964-06-12
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

Application number
GB2457464A
Inventor
Frank Sharp
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.)

Porous Plastics Ltd

Original Assignee
Porous Plastics Ltd
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.)
1964-06-12
Filing date
1964-06-12
Publication date
1968-03-27

1964-06-12
Application filed by Porous Plastics Ltd
filed
Critical
Porous Plastics Ltd

1964-06-12
Priority to GB2457464A
priority
Critical
patent/GB1107782A/en

1965-06-11
Priority to DE19651504733
priority
patent/DE1504733A1/en

1965-06-11
Priority to FR20436A
priority
patent/FR1437090A/en

1968-03-27
Publication of GB1107782A
publication
Critical
patent/GB1107782A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

C—CHEMISTRY; METALLURGY

C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON

C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H

C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof

C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C67/00—Shaping techniques not covered by groups B29C39/00 – B29C65/00, B29C70/00 or B29C73/00

B29C67/20—Shaping techniques not covered by groups B29C39/00 – B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored

B29C67/202—Shaping techniques not covered by groups B29C39/00 – B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising elimination of a solid or a liquid ingredient

Abstract

Microporous sheet materials are produced by mixing a synthetic resin with a fine particulate water-soluble pore-forming material and a solvent incompatible with the pore-forming material but capable of forming a gel with the working material, mixing to form a dough, forming the dough to a sheet, heating the sheet to drive off the solvent, leaching in an aqueous bath to remove the pore-forming material and drying, a wetting agent either of the general formula wherein M represents an alkali metal and R an alkyl group, or comprising an ethoxylated fatty acid amine, the wetting agent being selected so as to make the finished microporous material hydrophilic. Specified resins are polyvinyl chloride and polyurethanes. The sulphosuccinate compounds are surface active at pH 6 to 9 and the ethoxylated fatty acid amines, e.g. of the formula Alk-N-[-(CH2CH2O)2H]2 at pH less than 3. The surface active agent may also control the cell size in the microporous sheet.

GB2457464A
1964-06-12
1964-06-12
Improvements relating to the making of microporous sheet material

Expired

GB1107782A
(en)

Priority Applications (3)

Application Number
Priority Date
Filing Date
Title

GB2457464A

GB1107782A
(en)

1964-06-12
1964-06-12
Improvements relating to the making of microporous sheet material

DE19651504733

DE1504733A1
(en)

1964-06-12
1965-06-11

Process for the production of fine-pored foils

FR20436A

FR1437090A
(en)

1964-06-12
1965-06-11

Microporous material in sheets

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

GB2457464A

GB1107782A
(en)

1964-06-12
1964-06-12
Improvements relating to the making of microporous sheet material

Publications (1)

Publication Number
Publication Date

GB1107782A
true

GB1107782A
(en)

1968-03-27

Family
ID=10213792
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB2457464A
Expired

GB1107782A
(en)

1964-06-12
1964-06-12
Improvements relating to the making of microporous sheet material

Country Status (3)

Country
Link

DE
(1)

DE1504733A1
(en)

FR
(1)

FR1437090A
(en)

GB
(1)

GB1107782A
(en)

Cited By (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US5346788A
(en)

*

1993-04-01
1994-09-13
W. R. Grace & Co.-Conn.
Microporous polyurethane based battery separator

US5362582A
(en)

*

1993-04-01
1994-11-08
W.R. Grace & Co.-Conn.
Battery separator

US5389463A
(en)

*

1993-04-01
1995-02-14
W. R. Grace & Co.-Conn.
Battery separator

US5389433A
(en)

*

1993-04-01
1995-02-14
W. R. Grace & Co.-Conn.
Battery separator

1964

1964-06-12
GB
GB2457464A
patent/GB1107782A/en
not_active
Expired

1965

1965-06-11
FR
FR20436A
patent/FR1437090A/en
not_active
Expired

1965-06-11
DE
DE19651504733
patent/DE1504733A1/en
active
Pending

Cited By (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US5346788A
(en)

*

1993-04-01
1994-09-13
W. R. Grace & Co.-Conn.
Microporous polyurethane based battery separator

US5362582A
(en)

*

1993-04-01
1994-11-08
W.R. Grace & Co.-Conn.
Battery separator

US5389463A
(en)

*

1993-04-01
1995-02-14
W. R. Grace & Co.-Conn.
Battery separator

US5389433A
(en)

*

1993-04-01
1995-02-14
W. R. Grace & Co.-Conn.
Battery separator

Also Published As

Publication number
Publication date

DE1504733A1
(en)

1969-04-10

FR1437090A
(en)

1966-04-29

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