DE966421C - Process for the production of polarization filters according to the single color process - Google Patents

Process for the production of polarization filters according to the single color process

Info

Publication number
DE966421C
DE966421C DEZ1213D DEZ0001213D DE966421C DE 966421 C DE966421 C DE 966421C DE Z1213 D DEZ1213 D DE Z1213D DE Z0001213 D DEZ0001213 D DE Z0001213D DE 966421 C DE966421 C DE 966421C
Authority
DE
Germany
Prior art keywords
production
polarization filters
coloring
filters according
polyvinyl alcohol
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
DEZ1213D
Other languages
German (de)
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Priority to DEZ1213D priority Critical patent/DE966421C/en
Application granted granted Critical
Publication of DE966421C publication Critical patent/DE966421C/en
Expired legal-status Critical Current

Links

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

Description

Verfahren zur Herstellung von Polarisationsfiltern nach dem Einfärbeverfahren Die Erfindung betrifft ein Verfahren zum Herstellen von Polarisationsfiltern nach dem Einfärbeverfahren, bei denn als Ausgangsstoff für die Einfärbung Abkömmlinge des Polyvinylalkohols benutzt werden.Process for the production of polarization filters by the coloring process The invention relates to a method for producing polarization filters according to the dyeing process, because descendants are used as the starting material for the dyeing process of polyvinyl alcohol can be used.

Derartige Verfahren bestehen bekanntlich im wesentlichen in zwei Verfahrensschritten, einean Färben und einem Strecken der Ausgangsfolie. Es ist an sich bereits bekannt, zur Herstellung von Polarisationsfiltern nach dem Einfärbeverfahrem als Ausgangsstoff für die Einfärbung Polyvinylalkohole und Abkömmlinge des Polyvinyalkohols zu verwenden. Diese bekannten Ausgangsstoffe weisen jedoch Mängel auf. Durch das Färben. tritt eine Quellung der Folie ein:, die .den Streckprozeß in unkontrollie rb-arer Weise ungünstig beeinflussen kann.As is known, such processes essentially consist of two process steps, one of dyeing and one stretching of the starting film. It is already known in itself for the production of polarization filters according to the coloring process as a starting material to use polyvinyl alcohols and derivatives of polyvinyl alcohol for coloring. However, these known starting materials have shortcomings. By dyeing. occurs swelling of the film: the stretching process in an uncontrollable manner can adversely affect.

Zur Vermeidung bzw. zur Verminderung einer derartigen Quellung des Ausgangsmaterials wird gemäß der Erfindung vorgeschlagen, als FolienmateriaJ teilweise entacetylierte Polyvinylacetate zu benutzen. Durch entsprechende Wahl der Entacetylierung besteht dabei die Möglichkeit,, die Quellung der Folie in einer Weise zu steuern, daß ihr Strecken in einem solchen,-für das Ausrichten der Folienstruktur notwendigen und hinreichenden Maß erfolgt.To avoid or reduce such swelling of the Starting material is proposed according to the invention, partially as film material to use deacetylated polyvinyl acetates. By appropriate choice of deacetylation it is possible to control the swelling of the film in such a way that that their stretching in such a way, -for the alignment of the film structure necessary and to a sufficient degree.

Als besonders zweckmäßige Abkömmlinge des Polyvinylalkohols werden von. einer Reihe möglicher Polyvinylester Polyvinylformale vorgeschlagen. Bezüglich der Auswahl von Farbstoffen für die Einfärbung des Ausgangsmaterials besteht eine Vielzahl von Möglichkeiten, beispielsweise kann man eine Jodeinfärbung wählen.Are particularly useful derivatives of polyvinyl alcohol from. proposed a number of possible polyvinyl esters, polyvinyl formals. In terms of there is a choice of dyes for coloring the starting material Numerous possibilities, for example one can choose an iodine coloring.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Polarisationsfiltern nach dem Einfärbeve rfahren, bei dem als Ausgangsstoff für die Einfärbung Abkömmlinge des Polyvinylalkohols benutzt werden, gekennzeichnet durch die Verwendung teilweise entacetylierter Polyvinylacetate. a. Verfahren zur Herstellung von Polarisationsfiltern nach dem Einfärbeverfahren, bei dem als Ausgangsstoff für die Einfärbung Abkömmlinge des Polyvinylalkohols benutzt werden, gekennzeichnet durch die Verwendung von Polyvinylformale. In Betracht gezogene Druckschriften: Britische Patentschriften Nr. 5z2 863, 526 780, 5-I9 698; schweizerische Patentschrift Nr. 2io 632; USA.-Patentschrift Nr. 2 328 219; Zeitschrift »Die Naturwissenschaften«, 1935, 23. Jahrgang, H. 45, S. 770, Bericht über »Faserdiagramme von Polyvinylalkohol«; Kolloidzeitschrift, 1934, Bd.69, H.3, Aufsatz über »Röntgenoskopie organischer Gele«.PATENT CLAIMS: i. Process for the production of polarization filters after the coloration process, in which derivatives of polyvinyl alcohol are used as the starting material for coloring, characterized by the use of partially deacetylated polyvinyl acetates. a. Process for the production of polarization filters according to the coloring process, in which derivatives of polyvinyl alcohol are used as the starting material for coloring, characterized by the use of polyvinyl formals. Documents considered: British Patent Nos. 5z2 863, 526 780, 5-19 698; Swiss Patent No. 2io 632; U.S. Patent No. 2,328,219; Journal "Die Naturwissenschaften", 1935, 23rd year, no. 45, p. 770, report on "Fiber diagrams of polyvinyl alcohol"; Colloid magazine, 1934, vol. 69, volume 3, article on "Roentgenoscopy of organic gels".
DEZ1213D 1943-09-14 1943-09-14 Process for the production of polarization filters according to the single color process Expired DE966421C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEZ1213D DE966421C (en) 1943-09-14 1943-09-14 Process for the production of polarization filters according to the single color process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ1213D DE966421C (en) 1943-09-14 1943-09-14 Process for the production of polarization filters according to the single color process

Publications (1)

Publication Number Publication Date
DE966421C true DE966421C (en) 1957-08-01

Family

ID=7618047

Family Applications (1)

Application Number Title Priority Date Filing Date
DEZ1213D Expired DE966421C (en) 1943-09-14 1943-09-14 Process for the production of polarization filters according to the single color process

Country Status (1)

Country Link
DE (1) DE966421C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182632A2 (en) * 1984-11-16 1986-05-28 Sumitomo Chemical Company, Limited Light-polarizing film

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB512863A (en) * 1937-04-03 1939-09-27 Erwin Kaesemann Polarizing bodies
CH210632A (en) * 1937-03-22 1940-07-31 Kaesemann Erwin Polarizing filter.
GB526780A (en) * 1938-04-25 1940-09-25 Erwin Kaesemann Improvements in or relating to a process for the production of polarizing bodies
GB549698A (en) * 1939-05-04 1942-12-03 Polaroid Corp Improvements in or relating to light polarizers
US2328219A (en) * 1938-10-29 1943-08-31 Polaroid Corp Light polarizer and process of manufacture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH210632A (en) * 1937-03-22 1940-07-31 Kaesemann Erwin Polarizing filter.
GB512863A (en) * 1937-04-03 1939-09-27 Erwin Kaesemann Polarizing bodies
GB526780A (en) * 1938-04-25 1940-09-25 Erwin Kaesemann Improvements in or relating to a process for the production of polarizing bodies
US2328219A (en) * 1938-10-29 1943-08-31 Polaroid Corp Light polarizer and process of manufacture
GB549698A (en) * 1939-05-04 1942-12-03 Polaroid Corp Improvements in or relating to light polarizers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182632A2 (en) * 1984-11-16 1986-05-28 Sumitomo Chemical Company, Limited Light-polarizing film
EP0182632A3 (en) * 1984-11-16 1987-06-03 Sumitomo Chemical Company, Limited Light-polarizing film
US4859039A (en) * 1984-11-16 1989-08-22 Sumitomo Chemical Company, Limited Light-polarizing film

Similar Documents

Publication Publication Date Title
DE966421C (en) Process for the production of polarization filters according to the single color process
DE2529326A1 (en) PROCESS FOR COVERING MOLDED OBJECTS WITH A FILM
AT290866B (en) Process for the production of generally tubular products from composite Al-Mg-Al2O3-MgO material for essentially nuclear applications as well as material produced afterwards
US1877855A (en) Process of preserving wood
DE593790C (en) Process for preserving diazo solutions
CH390472A (en) Process for producing a piston provided with an essentially cylindrical neck from a piece of tubular glass, machine for carrying out this process and pistons produced according to this process
CH276478A (en) Process for manufacturing a rolling mill with a pair of rolls, and a rolling mill manufactured according to the process.
DE574002C (en) Process for the production of nitrogen-containing cellulose esters, especially those with a high affinity for dyes
DE963472C (en) Process for plasticizing polystyrene
DE507104C (en) Process for rendering combustible materials non-flammable
DE605397C (en) Process for the treatment and storage of undyed chrome leather
DE648508C (en) Process for sizing crepe yarn
DE908917C (en) Plasticizers
DE964985C (en) Process for the production of celluloid-like masses from nitrocellulose
DE928528C (en) Process for the production of nicotinic acid esters
DE723628C (en) Process for denitrating nitrocellulose
DE930215C (en) Process for the manufacture of crystal rectifiers
DE520971C (en) Process for the production of colored structures from cellulose esters
DE671332C (en) Process for the production of neutral and bleached soaps
DE364512C (en) Process for the production of artificial horn
DE749469C (en) Process for the preparation of a nitrogen-containing compound
DE963550C (en) Process for processing threads made of polycaprolactam
DE1796071C3 (en) Fibers or threads of high mechanical strength made of synthetic mineral material, in particular glass, and processes for their manufacture
DE359311C (en) Process for reducing the viscosity of viscous solutions of nitrocellulose and its compositions such as celluloid, also of acetyl cellulose and other cellulose esters
DE848359C (en) Process for the production of polymerizable humic acids