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
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.)
Filing date
Publication date
Application filed by Porous Plastics Ltd filed Critical Porous Plastics Ltd
Priority to GB2457464A priority Critical patent/GB1107782A/en
Priority to DE19651504733 priority patent/DE1504733A1/en
Priority to FR20436A priority patent/FR1437090A/en
Publication of GB1107782A publication Critical patent/GB1107782A/en
Expired legal-status Critical Current

Links

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 <FORM:1107782/C3/1> 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
US5389433A (en) * 1993-04-01 1995-02-14 W. R. Grace & Co.-Conn. Battery separator
US5389463A (en) * 1993-04-01 1995-02-14 W. R. Grace & Co.-Conn. Battery separator

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
US5389433A (en) * 1993-04-01 1995-02-14 W. R. Grace & Co.-Conn. Battery separator
US5389463A (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

Similar Documents

Publication Publication Date Title
GB2022126B (en) Liquid detergent composition
DE2966429D1 (en) Liquid emulsion polymers, process for preparing them and aqueous compositions thickened with these emulsions
FR2288126A1 (en) PROCESS FOR MANUFACTURING HOMOGENOUS THERMOPLASTIC MATERIALS IN THE FORM OF STRIPS OR GRANULES
ES513810A0 (en) &#34;A PROCEDURE FOR PREPARING A CELL FOAM STABILIZER&#34;.
IE35679L (en) Detergent compositions
AT348633B (en) PROCESS FOR THE PREPARATION OF Aqueous DISPERSIONS
TR20669A (en) USING THE CYCLO-ALKANE-CARBOXYLIC ACID TUEREVES AS AN EFFECTIVE COMPOSITION OF THE PLANT BUEYUEM.
GB1107782A (en) Improvements relating to the making of microporous sheet material
DK132322B (en) Analogous process for the preparation of the N-methyl-D-glucamine salt of 2- (2&#39;-methyl-3&#39;-trifluoromethylanilino) -nicotinic acid.
IT7826750A0 (en) AQUEOUS DISPERSIONS OF ADDITION POLYMERS FOR USE AS SURFACE COATINGS.
IT8019343A0 (en) POLYMER IMMUNOREGULATORY AGENTS.
AT317919B (en) Process for the preparation of new 5- (3&#39;-phenyloxadiazol-5&#39;-yl) -biguanides, their acid addition salts and quaternary salts
DE2962851D1 (en) Aqueous copolymer dispersions produced by a special process, process for their production and their use as binding agents in aqueous paints
JPS53134784A (en) Production of small hollow cell-containing material consisting of double layers of surface active agent
AT319252B (en) Process for the preparation of new pyrido [3,2-d] pyrimidines and their acid addition salts
JPS5266633A (en) Stable dispersion of agricultural chemicals
EP0184751A3 (en) Diaminoalkyldiphenyl ethers, process for their preparation and their use
GB1391618A (en) Perfluorocarboxylic acid derivatives
GB2023606B (en) Phosphoric acid esthers of poly ethyleneoxy n-butane 1,4 diols in synthetic aqueous based metal working fluid compositions
JPS5670843A (en) Adhering method of fluorine containing ion exchange membrane and synthetic resin
CH494258A (en) Process for the production of microporous, water-vapor-permeable polyurethane (urea) sheets
JPS53143676A (en) Awning material
JPS5288592A (en) Wetting agent
RO70253A (en) PROCESS FOR OBTAINING A POLYOLEFINIC COMPOSITION, YES CAN BE PAINTED WITH ACID DYES
FR2320318A1 (en) PROCESS FOR PREPARING AQUEOUS DISPERSIONS OF PLASTIC MATERIALS INTENDED FOR THE MANUFACTURE OF PAINTS