US962877A - Celluloid composition. - Google Patents

Description

To all whom it may concern.

' following is a description.

as 962.2??? Y PATENT curios;

JONAS W. AYLSWORTH, OF EAST ORANGE, NEW JERSEY,

'GEII LLULOID COMPOSITION.

No Drawing. Application filed May 31,

Be it known that I, JoNAs W. AYLswoR'rH, a citizen of the United States, residing at 223 Midland avenue,- East Orange, in the county of Essex and State of New Jersey, .have invented a certain new and useful Improved Celluloid Composition, of which the The object of my invention is to render celluloid and similar compositions .less mflammable, while at the same time preserviiig tliiir desirable properties of transparency, toughness, flexibility, etc.

The invention consists in admixing r a s sociating, by the aid of a suitable solvent,-

with pyroxylin and wiarciiuios'eiesiersgf the acetic series, a halogenized fatty acid or derivative such as the methyl": p gpy le e atesilt ernule. l nt) :iri j fififieumtiv ie: A; n'ated fatty aci d. By a halogenized fat y a'cid ITn'ea'iT fatty acid, such as stearic, palmitid or myristic acid, in which a part of the hy; drogen is replaced by a halogen, such as fluorin,"ghlgri 1 i,f0r bromi ll1e compositibiiTiTa'ybe varied in'a'iiuinber of Ways to suit the special requirements of its use. For

instance, when great flexibility is required,

the proportion of the halogenized fatty acid or derivative may be increased until it exceeds the pyroxylin or cellulose ester. When it is desired to make more or less massive articles Where flexibility is not important, but where great toughness is desired, a smaller proportion of a halogenized fatty acid or derivative may be used, or if great toughness is not important, the Lhalogenizing of the fatty acid may be carried to such an extent as to resinize the same.- Stearic acid or palmitic acid, when chlorinated in the usual way for several days in a-heated condition (preferably with the aid of a.catalytic agent, such as i odi 1 r i i i t ip 1 orrv chlolid) passes through various stages, commencing with the solid fatty acid, thence to an oily liquid when cold, and finally through progressively increasing degrees of viscosity, as each additional atom of hydrogenis replaced by chlorin until a resinous solid results. The further this treatment is carried the higher will be the non-infiammability of the resulting compound. Such materials and many of its derivatives above referred Specification of.

L tters Patent latented June 28, 1910.

1906. Serial No. 319,465.

to, form a solid solvent of pyroxylin and cellulose esters when heated with the same with the aid of a common solvent. The presence of the halogenized fatty acid or fatty' acid derivative imparts decreased inflannnability to the product; in fact, when a halogenized fatty acid or fatty acid derivative is thus admixed in aryingproportions with pyrlylin or ;cellulose ,ester, the compound can be burned only with great difficulty. At the same time, a composition closely resembling celluloid can be obtained, since the halogenized solid solvent possesses the desirable A properties of camphor in celluloid without beingin the least volatile.

In manufacturing the improved celluloid composition, the halogenized solid solvent is added to the cellulose ester or yroxylin and with the aid of a common so vent, such as acetone, the composition may bemanufactured into rods, sheets, films or other articles by the well-known methods of manipulating celluloid.

Having now described my invention, Wha I claim as new and desire to secure by Let ters Patent is as follows 1. A celluloid composition, comprising pyroxylin or other cellulose ester, combined with a halogenized fatty acid or its derivative, substantially as set forth.

roxylin or other'cellulosemster, combined with af'chlorinated fatty acidcr its derivative, substantially as set forth.

3. A celluloid composition, comprising pyroxylin orother cellulose ester, combined with halo enized stearic acid, substantially as set fort 4, A celluloid composition, comprising pyroxylin or other cellulose ester, combined with chlorinated stearic acid, substantially as set forth.

5. A celluloid composition comprising an ester of cellulose of'the acetic series of fatty acids, combined with a halogenized fatty acid or its derivative, substantially as set forth.

6. A celluloid composition comprising an ester of cellulose of the acetic series of fatty acids, combined with a chlorinated fatty acid or its derivative, substantially as set forth. 7

7. A celluloid composition comprising an 2. A celluloid composition, comprising pyester of cellulose ofthe acetic series of fatty .;Th is specification signed and witnessed acigs, combine?l with lflalofienized stearic this 29th day of May 1906. Y aci ,substantia y as set ort 8. A celluloid composition, comprising an JGNAS AYLSWORTH 5 ester of cellulose of the acetic series of fatty Witnesses:

acids, combined with chlorinated stearic FRANK L. DYER, acid, substantially as set forth. ANNAR. KLEHM.