US1770663A

US1770663A - Thermal and electrical insulator and process of manufacture thereof

Info

Publication number: US1770663A
Application number: US165218A
Authority: US
Inventors: Samuel Andre Albert
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-02-06
Filing date: 1927-02-01
Publication date: 1930-07-15
Anticipated expiration: 1947-07-15

Description

gnueni'oz a q u A. A. SAMUEL July 15, 1930.

THERMAL AND ELECTRICAL INSULATOR AND PROCESS OF MANUFACTURE THEREOF Filed Feb. 1, 1927 Patented July 15, 1930 UNITED STATES ANDRE ALBERT SAMUEL, OF PARIS, FRANCE THERMAL AND ELECTRICAL INSULATOR AND PROCESS OF MANUFACTURE THEREOF Application filed February 1, 1927, Serial No. 165,218, and in France February 6, 1926.

This invention 'has for its object a new product possessing a great electric and thermal insulating power, which is easy to work, non-inflammable, not brittle, not hygrometric and has a very high resistivity to the various chemical reagents.

Referring'to the drawings Figure 1 is a perspective view of a block of fibrous material impregnated with Thiolite,

Fig. 2 is a section of a tube of said material having an embedded fabric.

This product comprises substantially a fibrous core coated with the material known as Thiolite which has been described in wthe United States Patent 1,704,629, dated March 5, 1929, comprising the reaction product of sulphur chloride, a condensation prodnot 0.. a phenol and a reactive methylene com pound.

The fibrous material used to form the core of the new product may be hygrometric and consequently not liable to be generally used by itself for constituting high insulations. In the present case after having been previously dried and when embedded in Thiolite it will no longer be able to absorb any Water or moisture.

Moreover a better result will be obtained particularly as regards its mechanical properties when the fibrous matter constituting the core has been previously woven in the shape of a band or fabric and feltered or given a certain mechanical strength by any appropriate means.

The core may be made for instance of as bestos or any cellulosic material such as linen, paper, cardboard, etc.

The process of manufacture of this insulating compound is as follows:

The impregnation may be obtained in various manners.

The fibrous surface may be impregnated by immersion or coated on one side with a Thiolite varnish, the solvents of which are subsequently evaporated.

These solvents are any volatile solvents for varnish, such as, for example, acetone, carbon tetrachloride and volatile alcohols.

Several sheets manufactured as above indicated may be pressed together in a press, by

rolling in a calender or by stamping upon appropriate blocks and heated simultaneously or successively, in order to cause the elements to adhere together in such a manner as to benefit by the softening of the Thiolite when heated and to polymerize the latter so as to cause the hardening of the whole and to ensure its acquiring all the desired proper ties.

The insulating compound produced according to the present invention may be utilized in the manufacture of cylinders, boards, block: sticks and articles of various shapes which may be subsequently worked or finished mechanically.

It will be apparent that the various processes of manufacture of the product which have just been described are given merely by way of example and that I do not limit myself to the particulars herein disclosed 7a inasmuch as any appropriate means may be employed to cover or embed the fibrous core in its Thiolite coating.

The Thiolite above mentioned is fully described in the aforesaid patent, to which reference may be made.-

Having thus described and ascertained the nature of my said invention, I declare that what I claim and desire to secure by Letters Patent of the United States is 1. A thermal and electrical insulator comprising a core of dried fibrous material embedded in a reaction product of sulphur chloride and a condensation product of .a phenol with a reactive methylene compound.

2-. A thermal and electrical insulator, comprising a core of woven fibrous material dried and embedded in a reaction product of sul phur chloride and a condensation product of a phenol with a reactive methylene compound.

3. A thermal and electrical insulator, comprising a dried cellulosic material embedded in a reaction product of sulphur chloride and a phenol condensation product of a reactive methylene compound.

4. A thermal and electrical insulator comprising a fibrous material embedded in a hardened reaction product of a su phur chloride and a phenol condensation product with a reactive methylene compound.

5. A process comprising impregnating a fibrous material with a solution of a reaction product of sulphur chloride and a phenol condensation product of a reactive methylene compound, evaporating the solvent and hardening the product by heat.

In testimony that I claim the foregoing as my invention, I have signed my name.

ANDRE ALBERT SAMUEL;