GB1353246A - Poromeric materials - Google Patents
Poromeric materialsInfo
- Publication number
- GB1353246A GB1353246A GB2341171*A GB2341171A GB1353246A GB 1353246 A GB1353246 A GB 1353246A GB 2341171 A GB2341171 A GB 2341171A GB 1353246 A GB1353246 A GB 1353246A
- Authority
- GB
- United Kingdom
- Prior art keywords
- swelling agent
- swollen
- polymer
- swellable
- 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
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
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
-
- 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
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/05—Elimination by evaporation or heat degradation of a liquid phase
- C08J2201/0502—Elimination by evaporation or heat degradation of a liquid phase the liquid phase being organic
Abstract
1353246 Laminates L G RAY JNR and E J JACOB 19 April 1971 [19 March 1970 23 July 1970] 23411/71 Heading B5N [Also in Division C3] Laminates comprise textile fabrics and microporous moisture vapour permeable sheets having micropores containing shrunken material which are prepared by forming a layer of a composition comprising a dispersion in a liquid medium of a reversibly swellable and deswellable material that is highly swollen to at least twice its dry size by having absorbed therein a swelling agent and deswellable to less than half its swollen size by removal of the swelling agent therefrom. The liquid medium is a liquid filmforming polymer, has dissolved therein a filmforming polymer or comprises a dispersion of a film-forming polymer in a plasticizer for the polymer. The layer is dried, cured if necessary and the swelling agent removed from the swellable material by heating and thereby deswelling the swollen material. The swellable material may be a cellulosic compound, a polyoxyethylene resin, a natural gum, sodium alginate, dextrin or corn starch in which cases the swelling agent is water. The swelling agent may be a synthetic elastomer, e.g. a butadiene/acrylonitrile copolymer, and the swelling agent non- aqueous, e.g. the same solvent as that used to dissolve the film forming polymer. Examples relate to polyvinyl chloride plastisols as the film former with aqueous swollen materials, e.g. carboxymethyl cellulose, guar gum, sodium alginate or a polyoxyethylene resin and a plastisol swollen acrylonitrile/butadiene copolymer. Other examples relate to polyurethane resins using similar swellable materials and swelling agents. The microporous sheets may be laminated to the textile backing using as adhesive, a material of the same composition as that used to form the microporous sheet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2121270A | 1970-03-19 | 1970-03-19 | |
US5781170A | 1970-07-23 | 1970-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1353246A true GB1353246A (en) | 1974-05-15 |
Family
ID=26694421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2341171*A Expired GB1353246A (en) | 1970-03-19 | 1971-04-19 | Poromeric materials |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE764575A (en) |
CH (1) | CH530267A (en) |
DE (1) | DE2113383C3 (en) |
FR (1) | FR2084839A5 (en) |
GB (1) | GB1353246A (en) |
IL (1) | IL36336A (en) |
NL (1) | NL7103753A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4623463A (en) * | 1983-05-09 | 1986-11-18 | Memtec Limited | Formation of porous membranes |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19738856C2 (en) * | 1997-09-05 | 2001-06-13 | Lohmann Therapie Syst Lts | Propellant-free process for the production of sheet-like polymer foams |
-
1971
- 1971-03-03 IL IL36336A patent/IL36336A/en unknown
- 1971-03-18 CH CH396071A patent/CH530267A/en not_active IP Right Cessation
- 1971-03-18 FR FR7109581A patent/FR2084839A5/fr not_active Expired
- 1971-03-19 BE BE764575A patent/BE764575A/en unknown
- 1971-03-19 DE DE2113383A patent/DE2113383C3/en not_active Expired
- 1971-03-19 NL NL7103753A patent/NL7103753A/xx unknown
- 1971-04-19 GB GB2341171*A patent/GB1353246A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4623463A (en) * | 1983-05-09 | 1986-11-18 | Memtec Limited | Formation of porous membranes |
Also Published As
Publication number | Publication date |
---|---|
DE2113383B2 (en) | 1975-03-27 |
DE2113383A1 (en) | 1971-10-07 |
BE764575A (en) | 1971-08-16 |
FR2084839A5 (en) | 1971-12-17 |
CH530267A (en) | 1972-11-15 |
IL36336A (en) | 1974-12-31 |
DE2113383C3 (en) | 1975-11-13 |
IL36336A0 (en) | 1971-05-26 |
NL7103753A (en) | 1971-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |