US2099976A - Manufacture of shaped articles - Google Patents

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Nov. 23, 1937. M. HAGEDORN 2,099,975,

MANUFACTURE OF SHAPED ARTICLES Filed July 15, 1933 Patented Nov. 23, 1937 UNITED STATES PATENT OFFICE MANUFACTURE OF SHAPED ARTICLES Max Hagedorn, Dessau-in Anhalt, Germany, assignor to I. G. Farbenindustrle Aktiengesellschaft, Frankfort-on-the-Main, Germany Application July 15, 1933, Serial No. 680,654 In Germany July 16, 1932 7 Claims. (Cl. 95-1) My present invention relates to the manufac in a solvent or a swelling agent for the polyvinylture of shaped articles and has for its object the chloride. manufacture of shaped articles from polymerized The polyvinyl halide may be employed alone or vinyl halide with a content of halogen correspondin admixture with polymerization products of ing with more than 1 atom but less than two other aliphatic or aromatic unsaturated com- 5 atoms on one vinyl group corresponding with the pounds, for instance acrylic acid esters, the .sub formula CHziCHa. sequent halogenation being, if required, also ap- I have found that plastic masses from polyplicable to the mixture of the two substances.

merized vinyl halide which contains more than Mixed polymerization products which have been one halogen atomandless than two halogen atoms after-halogenated, for tan v yl ha id d 10 on one vinyl group are for their indifference acrylic acid alkyl ester are as well suited for use against photographic emulsions particularly suited in t e p s t P cessfor the production of all sorts of articles to be The new plastic messes may Contain y kind used for photographic purposes. Thi i mo t of additions known in the manufacture of plastic surprising when considering that the artificial masses from cellulose derivatives and of highly l5 masses hithertoknown, for instance, such as re p ly condensation p uc s, f r t nce, known under the trade name Bakelite, or connin agents, plasticizers, fillin m ial densation products from urea and formaldehyde, P a c dy u s a d sim lar materials. or hardened caoutchouc, or coumarone resin, or Cellulose derivatives, are utiliZable .e d-

polymerized vinyl acetate, or casein have proved i 2o unsuitable. Compared with cellulose derivatives The following examples illustrate t invent o the new plastic masses have the advantage of Example 1-PolymeIiZed yl in the form 01 being cheaper. Thus, the masses are suitable for a loose Powder and containing 60 to 5 D oenl; theproductionof carriers for light-sensitive layers, of Chlorine, is Pressed Without ail addition Whatfor instance, roll films, cinematographic films, ever in a hydraulic Press into Strong, clear and 25 spools, slides, film-packs, filmpack holders, cores transparent sheets of 200 a lJhiokhess, Which in for photographic films, tanks for development, the same Way as glass Plates e p ov d d with drying drums, parts of the casting machines, the an adhesive layer d then a ed w t a pri ti d i and so light-sensitive photographic emulsion. The ma- Th accompanying drawing illustrates by way terial is excellently suitable for use as a sup- 30 of example some articles according to the inven- P for Photographic layers use as circular m supports for layers suited for recording sound Fig. 1 shows a film spool having a core of polyphotographioally in the manner of taking g a omerized vinyl chloride subjected to an after- Phone d chlorinating treatment; Ex pl 2-P0 eri d vinyl ta n ng 60 as Fig. 2' shows a photographic film; to 65 per cent of chlorine with the addition of 30 Fig. 3 showsaslide for photographic plates and per cent of filling agent such as ground shale, Fig. 4 shows a box for storing cinematographic asbestos and wood dust to which there may have fil been added 3 to 5 per cent of soot, is pressed into 40 Referring i to the drawing in Particular, moulds for making spool-cores or other parts of 40 in 1," I IS Shaft and 8 are the flanges Of pools under a pressure at a temperature the film SPOOL illustrated the shaft 1 18 formed of about 30 5o C. The parts of the Spools are of polymenzed vinyl chloride composition used for the manufacture of all sorts of spools while the flanges 8 may be formed of metal or for photographic films other suitable materials. In Fig. 2, the lightsensitive emulsion layer 1 is carried by the support 2 which is made of after-chlorinated poly- Ezcample 3.Polymerized vinyl chloride containing 60 to 65 per cent of chlorine with or withmerized vinyl chloride. In Fig 3, both the outthe addition of filling agents or softening ing 3 and the cover 4 of the slide are formed of agents is made into casmgs for mu films or mm the polymerized vinyl chloride composition. In packs or into P s of cameras or w th the ad 50 Fig. 4 the body 5 and lid 6 of the box are formed dition of dyestuffs into filters for p oto aphic of this material. purposes by pressing or rolling,

The polymerized vinyl halide having the desired What I claim is: content of halide is obtainable by subjecting poly- 1, A slide for light sensitive photographic mamerized vinyl chloride to achlorinating treatment t ial which comprises a polymerized vinyl chloride containing about 60 to 85 per cent of chlorine.

2. A photographic iilm having a support which comprises polymerized vinyl-chloride containing 60 to 65 per cent of chlorine.

3. A casing for light-sensitive photographic material which comprises polyvinyl-chloride containing 60 to 65 per cent oi chlorine.

4. A carrier for photographic light sensitive 10 layers, said. carrier having a surface comprising a polymerized vinyl chloride containing about 60 to 65 percent of chlorine.

5. The invention as claimed in claim 4, wherein saidv carrier comprises a transparent film oi p lymerized vinyl chloride, in combination with a layer of photographic light sensitive material united thereto.

6. The invention as claimed in claim 4, where- 5 in said carrier comprises a spool upon which a photographic film of. light sensitive material may be wound.

7. The invention as claimed in claim 4, wherein. said carrier comprises a casing for enclosing the 10 light sensitive material.

MAX HAGEDORN.

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