GB1448621A - Acrylic polymer glazing material - Google Patents

Acrylic polymer glazing material

Info

Publication number
GB1448621A
GB1448621A GB46474A GB46474A GB1448621A GB 1448621 A GB1448621 A GB 1448621A GB 46474 A GB46474 A GB 46474A GB 46474 A GB46474 A GB 46474A GB 1448621 A GB1448621 A GB 1448621A
Authority
GB
United Kingdom
Prior art keywords
methyl methacrylate
foamed
sheet
sheets
acrylic polymer
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
GB46474A
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of GB1448621A publication Critical patent/GB1448621A/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
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
    • 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
    • C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Abstract

1448621 Foamed methyl methacrylate polymer sheets SUMITOMO CHEMICAL CO Ltd 4 Jan 1974 [10 Jan 1973] 00464/74 Headings C3C and C3P A glazing material comprises a foamed sheet of an acrylic polymer (i.e. a polymer containing at least 50 % by wt. of units derived from methyl methacrylate, the other comonomers being chosen so that the total light transmission of an unfoamed sheet is not impaired in comparison with an unfoamed sheet made wholly from methyl methacrylate) the sheet having a diffusion coefficient of 0À5-0À95 and a total light transmission of 40-90%. In Example (1) mixtures of methyl methacrylate and a methyl methacrylate resin were polymerized using as initiator 2,2<SP>1</SP>-azobis- (isobutyronitrile), 1,1<SP>1</SP> - azobis - (cyclohexane- 1-carbonitrile) and/or lauryl peroxide to form sheets within a cell formed by two glass plates; the cast plates were then foamed by heating. The foamed sheets were used to glaze horticultural structures, e.g. greenhouses.
GB46474A 1973-01-10 1974-01-04 Acrylic polymer glazing material Expired GB1448621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP621273A JPS5324334B2 (en) 1973-01-10 1973-01-10

Publications (1)

Publication Number Publication Date
GB1448621A true GB1448621A (en) 1976-09-08

Family

ID=11632208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46474A Expired GB1448621A (en) 1973-01-10 1974-01-04 Acrylic polymer glazing material

Country Status (3)

Country Link
JP (1) JPS5324334B2 (en)
GB (1) GB1448621A (en)
NL (1) NL7400289A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002018A1 (en) * 1980-01-15 1981-07-23 Hohnholz August Fa Method for the preparation of transparent and porous plastic materials
US4530806A (en) * 1981-06-25 1985-07-23 August Hohnholz Kg Process of making articles of foamed polymethyl methacrylate
WO1989004342A1 (en) * 1987-11-13 1989-05-18 Fraunhofer-Gesellschaft Zur Förderung Der Angewand Process for producing hard acrylic and/or methacrylic polymer foams without using fluorocarbons as foaming agents

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5415844A (en) * 1977-07-07 1979-02-06 Nissen Kiki Kk Photooscattering filtering film sheet for farming

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS472973U (en) * 1971-01-25 1972-09-01

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002018A1 (en) * 1980-01-15 1981-07-23 Hohnholz August Fa Method for the preparation of transparent and porous plastic materials
EP0032720A1 (en) * 1980-01-15 1981-07-29 Firma August Hohnholz Process for preparing transparent plastic foams
EP0032720B1 (en) * 1980-01-15 1985-07-03 Firma August Hohnholz Process for preparing transparent plastic foams
US4530806A (en) * 1981-06-25 1985-07-23 August Hohnholz Kg Process of making articles of foamed polymethyl methacrylate
DE3124980C1 (en) * 1981-06-25 1987-07-09 Fa. August Hohnholz, 2000 Hamburg Process for the manufacture of articles from foamed polymethyl methacrylate
WO1989004342A1 (en) * 1987-11-13 1989-05-18 Fraunhofer-Gesellschaft Zur Förderung Der Angewand Process for producing hard acrylic and/or methacrylic polymer foams without using fluorocarbons as foaming agents

Also Published As

Publication number Publication date
JPS5324334B2 (en) 1978-07-20
NL7400289A (en) 1974-07-12
JPS4998473A (en) 1974-09-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee