GB570837A - Improvements in or relating to coated light polarizing material and process of manufacturing same - Google Patents
Improvements in or relating to coated light polarizing material and process of manufacturing sameInfo
- Publication number
- GB570837A GB570837A GB12335/42A GB1233542A GB570837A GB 570837 A GB570837 A GB 570837A GB 12335/42 A GB12335/42 A GB 12335/42A GB 1233542 A GB1233542 A GB 1233542A GB 570837 A GB570837 A GB 570837A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- adhesive
- sheet
- resin
- polarizing 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
Links
- 239000000463 material Substances 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 239000000853 adhesive Substances 0.000 abstract 3
- 230000001070 adhesive effect Effects 0.000 abstract 3
- 229920003023 plastic Polymers 0.000 abstract 3
- 229920005989 resin Polymers 0.000 abstract 3
- 239000011347 resin Substances 0.000 abstract 3
- 239000012260 resinous material Substances 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 238000006116 polymerization reaction Methods 0.000 abstract 2
- -1 unsaturated methylene compound Chemical class 0.000 abstract 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 abstract 1
- 229920001807 Urea-formaldehyde Polymers 0.000 abstract 1
- 239000012790 adhesive layer Substances 0.000 abstract 1
- 229920000180 alkyd Polymers 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000003776 cleavage reaction Methods 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 229920001568 phenolic resin Polymers 0.000 abstract 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 230000007017 scission Effects 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000004094 surface-active agent Substances 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Polarising Elements (AREA)
Abstract
<PICT:0570837/IV/1> A polarizing sheet of plastic material is coated with a relatively hard light-transmitting resin polymerized in situ and secured thereto either autogeneously or by an adhesive. The polarizing sheet may comprise polarizing particles in a resin &c., a linear hydrophilia polymeric plastic, or a plastic having long, straight-chain molecules having conjugated systems of double bands, the particles or molecules being substantially similarly oriented. The coating may comprise methyl methacrylate or other unsaturated methylene compound, a vinyl compound, copolymers thereof, with or without hardening agents; various suitable substances are specifically set out. The adhesive, when used, may consist of a resin of urea-formaldehyde type or phenol-formaldehyde type, or of an alkyd resin. The material, or combination of materials, forming the coating is, preferably, so chosen that its refractive index is substantially that of the polarizing sheet for transmitted light. Polymerization may be effected by heating or by ulra-violet radiation. The Figure shows a polarizing sheet 10, the surfaces of which are not necessarily flat or smooth, secured by adhesive layers 12 to out layers 14 of highly - polymerized resinous material having optically smooth outer surfaces. The sheet 10 may be first coated with a solution of an adhesive such as "polymerise," the solvent being then mainly evaporated by baking, and may be suspended in a mould having optically smooth glass moulding surfaces. The resinous material may then be poured into the mould and polymerization effected by first heating to a low temperature, at then for from eight to fifteen hours at a high temperature; a surface active compound may be provided in the resinous material to facilitate free cleavage of the finished sheet from the mould. The mould may have plane walls, or curved walls for the production, with or without subsequent grinding of lenses embodying polarizers. Specification 548,759 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US570837XA | 1941-11-15 | 1941-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB570837A true GB570837A (en) | 1945-07-25 |
Family
ID=22008389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12335/42A Expired GB570837A (en) | 1941-11-15 | 1942-09-01 | Improvements in or relating to coated light polarizing material and process of manufacturing same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB570837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2945013A (en) * | 1956-03-22 | 1960-07-12 | Monsanto Chemicals | Water-soluble interpolymers of acrylic acids and 2-ethylhexyl esters of acrylic acids and method of making same |
-
1942
- 1942-09-01 GB GB12335/42A patent/GB570837A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2945013A (en) * | 1956-03-22 | 1960-07-12 | Monsanto Chemicals | Water-soluble interpolymers of acrylic acids and 2-ethylhexyl esters of acrylic acids and method of making same |
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