GB1080549A - Improvements in or relating to light transmitting polymeric sheet - Google Patents

Improvements in or relating to light transmitting polymeric sheet

Info

Publication number
GB1080549A
GB1080549A GB5265064A GB5265064A GB1080549A GB 1080549 A GB1080549 A GB 1080549A GB 5265064 A GB5265064 A GB 5265064A GB 5265064 A GB5265064 A GB 5265064A GB 1080549 A GB1080549 A GB 1080549A
Authority
GB
United Kingdom
Prior art keywords
liquid
calcium
monomer
cell
sheet
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
GB5265064A
Inventor
Tom Anthony Downing
Kenneth Philip Thorogood
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB5265064A priority Critical patent/GB1080549A/en
Priority to FR44218A priority patent/FR1462079A/en
Publication of GB1080549A publication Critical patent/GB1080549A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/02—Polymerisation in bulk
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • C08J2333/10—Homopolymers or copolymers of methacrylic acid esters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Polymerisation Methods In General (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Paper (AREA)

Abstract

1,080,549. Light-transmitting polymeric sheet. IMPERIAL CHEMICAL INDUSTRIES Ltd. Dec. 1, 1965 [Dec. 29, 1964], No. 52650/64. Heading B5A. [Also in Division G2] Light-transmitting sheets are made by polymerizing a liquid (that normally forms a transparent solid polymer) in a casting cell to form a flat sheet while the cell is maintained in a horizontal position. The liquid comprises monomer containing a single CH 2 =C< group per molecule and, when introduced into the casting cell, has uniformly dispersed within it insoluble translucent solid particles having maximum linear dimensions of 2-2000Á (preferably between 10-100 Á), a refractive index for the sodium D line that differs from that of the solid polymer formed by polymerization of the monomer alone by at least 0À05 but not more than 1À5 (preferably at least 0À1 but # 0À4), and in such quantity that their total surface area is 1-50 times preferably 3-10 the area of the lower surface of the layer of liquid in the cell, and the viscosity of the liquid being such that the particles settle in the cell to form a thin uniform layer adjacent said lower surface before polymerization. The monomer is preferably methyl methacrylate or a mixture of methyl methacrylate (at least 60% by wt.) with a copolymerizable compound containing a single ethylenically unsaturated group per molecule. The monomer may be partially polymerized, or contain some polymer, being in the form of a syrup, which may have a viscosity of 0À1-10 poises. The polymerizable liquid may also contain up to 5% by wt. of a copolymerizable monomer having at least 2 CH 2 =C< groups per molecule, so as to render the copolymer formed non-thermoplastic. The solid particles may be aluminium oxide, titanium dioxide, zinc carbonate, barium sulphate, calcium carbonate, calcium silicate, calcium magnesium orthosilicate, calcium molybdate, anhydrous calcium sulphate, calcium oxide, calcium sulphide, magnesium aluminate, mica, lead carbonate, zinc oxide or zinc sulphide, and may form a layer of thickness substantially equal to the maximum particle size in the sheet. A small amount of dyestuff may be added to the liquid to give it a grey neutral tone. The liquid may also contain a polymerization initiator, light stabilizers and an antistatic agent. The polymerized sheet may be used as a back projection screen or an illuminated sign or ceiling.
GB5265064A 1964-12-29 1964-12-29 Improvements in or relating to light transmitting polymeric sheet Expired GB1080549A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB5265064A GB1080549A (en) 1964-12-29 1964-12-29 Improvements in or relating to light transmitting polymeric sheet
FR44218A FR1462079A (en) 1964-12-29 1965-12-29 Manufacturing process for light transmitting polymer sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5265064A GB1080549A (en) 1964-12-29 1964-12-29 Improvements in or relating to light transmitting polymeric sheet

Publications (1)

Publication Number Publication Date
GB1080549A true GB1080549A (en) 1967-08-23

Family

ID=10464747

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5265064A Expired GB1080549A (en) 1964-12-29 1964-12-29 Improvements in or relating to light transmitting polymeric sheet

Country Status (2)

Country Link
FR (1) FR1462079A (en)
GB (1) GB1080549A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2704550A1 (en) * 1993-04-28 1994-11-04 Roehm Gmbh Process for the preparation of colored acrylate plastics having a metallic glossy surface
WO2001009231A1 (en) * 1999-07-30 2001-02-08 Ppg Industries Ohio, Inc. Cured coatings having improved scratch resistance, coated substrates and methods related thereto
US6593417B1 (en) 1999-07-30 2003-07-15 Ppg Industries Ohio, Inc. Coating compositions having improved scratch resistance, coated substrates and methods related thereto
US6610777B1 (en) 1999-07-30 2003-08-26 Ppg Industries Ohio, Inc. Flexible coating compositions having improved scratch resistance, coated substrates and methods related thereto
US6623791B2 (en) 1999-07-30 2003-09-23 Ppg Industries Ohio, Inc. Coating compositions having improved adhesion, coated substrates and methods related thereto
US6635341B1 (en) 2000-07-31 2003-10-21 Ppg Industries Ohio, Inc. Coating compositions comprising silyl blocked components, coating, coated substrates and methods related thereto
US6657001B1 (en) 1999-07-30 2003-12-02 Ppg Industries Ohio, Inc. Coating compositions having improved scratch resistance, coated substrates and methods related thereto

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002108B1 (en) * 1977-11-14 1982-07-21 Imperial Chemical Industries Plc Decorative acrylic sheets and articles formed therefrom
IL55710A (en) * 1978-09-30 1981-11-30 Brandenberger Hansruedy Manufacture of bodies of synthetic resin material with a refined surface

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2704550A1 (en) * 1993-04-28 1994-11-04 Roehm Gmbh Process for the preparation of colored acrylate plastics having a metallic glossy surface
WO2001009231A1 (en) * 1999-07-30 2001-02-08 Ppg Industries Ohio, Inc. Cured coatings having improved scratch resistance, coated substrates and methods related thereto
US6387519B1 (en) 1999-07-30 2002-05-14 Ppg Industries Ohio, Inc. Cured coatings having improved scratch resistance, coated substrates and methods thereto
US6593417B1 (en) 1999-07-30 2003-07-15 Ppg Industries Ohio, Inc. Coating compositions having improved scratch resistance, coated substrates and methods related thereto
US6610777B1 (en) 1999-07-30 2003-08-26 Ppg Industries Ohio, Inc. Flexible coating compositions having improved scratch resistance, coated substrates and methods related thereto
US6623791B2 (en) 1999-07-30 2003-09-23 Ppg Industries Ohio, Inc. Coating compositions having improved adhesion, coated substrates and methods related thereto
US6657001B1 (en) 1999-07-30 2003-12-02 Ppg Industries Ohio, Inc. Coating compositions having improved scratch resistance, coated substrates and methods related thereto
US6759478B2 (en) 1999-07-30 2004-07-06 Ppg Industries Ohio, Inc. Coating compositions having improved scratch resistance, coated substrates and methods related thereto
US6803408B2 (en) 1999-07-30 2004-10-12 Ppg Industries Ohio, Inc. Coating compositions having improved scratch resistance, coated substrates and methods related thereto
US6635341B1 (en) 2000-07-31 2003-10-21 Ppg Industries Ohio, Inc. Coating compositions comprising silyl blocked components, coating, coated substrates and methods related thereto

Also Published As

Publication number Publication date
FR1462079A (en) 1966-12-09

Similar Documents

Publication Publication Date Title
KR100612633B1 (en) Transparent thermoplastic composition comprising hollow glass beads
GB1080549A (en) Improvements in or relating to light transmitting polymeric sheet
EP2029935A1 (en) Device for signs
KR960010816A (en) High Performance Alkali Swellable Rheological Additives For Waterborne Systems
KR20000071268A (en) Light diffusing composites
KR100735591B1 (en) Transparent thermoplastic composition containing polytetrafluoroethylene particles
CA2058845C (en) Method for hiding scratches or imperfections on the surface of screens used in projection systems
US20040264159A1 (en) Light conducting body and method for the production thereof
KR850003543A (en) Manufacturing method of thermoplastic resin
JP2007153959A (en) Resin composition for light-diffusing plate and light-diffusing plate
JPH03207743A (en) Methacrylic resin molded material having excellent transmittance and diffusibility of light
KR900016353A (en) Vinyl Chloride Resin Composition
JPH04145485A (en) Light source device
GB1221429A (en) Manufacture of moulding material starting from polyethylene terephthalate
KR20080033072A (en) Light diffuse methacrylate resin multilayer plate
KR20090020850A (en) Thermoplastic resin composition having light diffusion property and method of preparing the same
JP2007192861A (en) Light diffusing plate
KR100229266B1 (en) Light dispersion acryl resin compositions and its products
JPH07207101A (en) Light dispersing acrylic resin composition and its production
JPH01236257A (en) Light-diffusing methacrylic resin and its production
JPH0147308B2 (en)
JPS6466261A (en) Acrylic resin composition
JPH05341129A (en) Surface light source
KR20080105477A (en) Resin composition for light diffusion plate and light diffusion plate
JPH0122862B2 (en)