US1317784A

US1317784A - Henby petbie fletcheb

Info

Publication number: US1317784A
Authority: US
Publication date: 1919-10-07
Anticipated expiration: 1936-10-07

Description

UNITED STATES PATENT OFFICE.

HENRY PETRIE FLETCHER, OF FOREST LODGE, NEAR SYDNEY, NEW SOUTH WALES, AUSTRALIA.

PROCESS FOR THE CONVERSION OF WATER PAS'IES INTO OIL PASTES.

1,317,784. No Drawing.

To all whom it may concern.-

Be it known that I, HENRY Pn'rnrr. FLETCHER, a subject of the King of Great Britain, residing at or Arundel street, Forest Lodge, near Sydney, in the State of New South Wales, Australia, have invented certain new and useful Improvements in Processes for the Conversion of Water Pastes into Oil Pastes, of which the followin is a specification.

his invention relates to improvements in the manufacture of oil pastes and has been. devised in order that the water in a water paste may be removed therefrom and oil substituted for the said water without necessitating an intermediate drying operation and to obtain a satisfactory commercial product.

In the production of certain oil pastes such as that wherein white lead is the base, the material under treatment assumes at one stage of manufacture the form of a wet pulp from which (according to the processes heretofore enerally used) it is necessary to remove t e water and to thereafter permeate the material with oil.

The salient feature of this invention resides in the provision of chemical and mechanical means whereby the pulp is permeated with oil to form an oil paste and the contained water is expelled without necessitating a distinct drying operation.

The wet pulp which is required to be converted into an oil paste is first treated by the addition of a predetermined quantity of borate of manganese. The proportion of borate of manganese to wet pulp would vary withincertain limits hereinafter clearly defined according to the percentage of water contained in the pulp, the quantity of oil required. to be incorporated, and the timeavailable for mixing. When treating thick pastes, that is pulp aving' a comparatively low water content borate of manganese added should be small, and when there are to be treated slush pastes that is those having a comparatively high water contentthe proportion of borate of manganese should be relatively hi her.

The preferred proportion for pulp aving a water content of approximately 20% by weight is 9 grains of borate of manganese to one pound of wet pulp, which corresponds to approximately a of one per cent. For slush pastes the proportion may be Specification of Letters Patent.

the proportion of n ed Q t- 12 L9- Application filed October 17, 1918. Serial No. 258,644.

progressively raised according to the water content to a maximum for most pur oses of twenty-five grains to the pound 0 wet pulp. Under no circumstances should the proportion of borate of manganese to wet pulp exceed'one-half of one per cent. other- Wise the desired effect will not be attained in a satisfactory commercial manner, as an excess of borate of manganese in the pulp will saponify the paste.

After the treatment above described a required quantity of oil is added to the pulp and the mass is subjected to mechanical working and mixing, the water being expelled from the pulp andthe oil combining therewith. This working or mixing is contlnued until the oil paste is of the required consistency.

For the urpose of carrying out the workmg and mixing operation on a commercial scale any ordinary mechanical device or machine known in the art and found suitable maiy be employed.

nstead of using borate of manganese as hereinbefore described, borax or other boracic acid saltsmay be employed, though a slightly higher proportion of such substance is necessary.

In the example of wet pulp to be treated, I have mentioned white lead as an example, but the invention is not confined thereto."

What I do claim is 1. A process for the conversion of water treatment of wet pulp by the addition of boracic acidsalts and the mechanical working of 'the'resulting mass with a required quantity of oil.

2. A process for the conversion of water pastes into oil pastes characterized by the treatment of wet pulp by the addition thereto of borate of manganese and the mechanical working of the resulting mass with a; required quantity of oil.

3. process for the conversion of water pastes into oil pastes characterized by the chemical treatment of wet ulp by the addition thereto of not exce mg one-half per cent. by weight, of 'borate of manganese and the mechanical working and mixing of the resulting mass with arequired quantity of oil.

4. A process for the conversion of water pastes into oil pastes wherein a wet pulp is subjected to the action of borate of manganese, said borate of manganese being added in the proFortion by weight of not exceeding one-hal per cent.

5. A process which com rises adding to a pul of white lead carrying about 20% of we r, an amount of borate of manganese equal to between the approximate limits of one-eighth r cent. to one half per (gent, relative to t e wei ht of said pulp.

6. The herein described process which comprises mixing a pulp of white lead with a small amount of a borate, then adding oil and working the mass.

In testimon whereof I aflix my signature in presence 0 two witnesses.

HENRY PE'TRIE FLETCHER.

Witnesses M. STARPELL, R. BOULTON.