Aluminum Powder for Waterproofing Fabrics - C&EN Global Enterprise

Nov 4, 2010 - C. H. S. TUPHOLME. 6, Hamilton Gardens, N. W. S, London, England. Chem. Eng. News , 1935, 13 (8), p 166. Publication Date: April 20, 193...
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INDUSTRIAL AND ENGINEERING CHEMISTRY

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W. A. O w e n s , a s s i s t a n t , f r o m Feb. 18, 1935 H. A. A m b r o s e ( P h . D . , M a s s a c h u s e t t s I n s t i t u t e of T e c h n o l o g y ) , t o N o v . 1 T 1934 H. C. H u n t e r ( B . S . , P e n n s y l v a n i a State College), from J u l y 1 t o O c t . 1, 1 9 3 4 H. K. S a l z b e r g ( P h . D . , U n i v e r Dairy Technology s i t y of W i s c o n s i n ) O c t . 1, 1935 (1931) R. R . M c G r e g o r ( P h . D . , U n i Illuminating GIBRP v e r s i t y of I l l i n o i s ) S e p t . 1, 1935 (1931) Mary E . Warga (M.S., Univers i t y of P i t t s b u r g h ) , a s s i s t a n t , t o M a y 1, 1 9 3 4 J. B . G a r n e r ( P h . D . , U n i v e r N a t u r a l G a s C 1915) s i t y of C h i c a g o ) S e p t . 15, 1935 J. T . S t e a r n ( S c . D - , F e d e r a l Polytechnic Institute of S w i t z e r l a n d ) , assistant, from Nov. 23, 1934 M . G. G a r n e r , a s s i s t a n t , t o M a y 14, 1 9 3 4 M . D. C o u l t e r ( P h . D . , O h i o Food MerchandisState University) Oct. 10, 1935 i n g (1933) M a r y A . Clapp (B.S., Univers i t y of P i t t s b u r g h ) , a s s i s t a n t , f r o m J u n e 1 t o S e p t . 9, 1 9 3 4 Klinor A . Sackter (B.S., U n i v e r s i t v of P i t t s b u r g h ) , a s s i s t a n t , to M a r c h 1 5 , 1 9 3 4 P. B . D a v i d s o n ( P h . D . , C o l u m P a p e r (1928) bia University) O c t . 1, 1 9 3 5 R. B. M c K i n n i s ( P h . D . , U n i C a n (1929) v e r s i t y of P i t t s b u r g h ) , s e n i o r fellow O c t . 1, 1 9 3 5 J. M . B o y d ( M . S . , U n i v e r j j i t y of F l o r i d a ) J. J. E n r i g h t ( P h . D . , Y a l e Zymology (1Q34I O c t . 1, 1 9 3 5 Universitv) C . H. GeisteV ( M . S . , I o w a S t a t e S h o e s (1930) Oct. 15, 1935 College) Ε . Β. K e s t e r ( P h . D . , N o r t h ­ T a r Acids (1933) Nov. 2 1 , 1935 western University) W. J. B a l d w i n ( B . S . , U n i v e r ­ Ceramic Chemicals s i t y of B u f f a l o ) , f r o m O c t . 1, (1933) D e c . 1, 1 9 3 5 1934 J. H. W a g g o n e r ( B . S . , U n i v e r ­ s i t y of K a n s a s ) , t o D e c . 1, 1934 T . H. S w a n ( P h . D . , Ohio S t a t e G a r m e n t (1929) D e c . 1, 1935 U n i v e r s i t y ) , s e n i o r fellow H . C. D o n a l d s o n ( B . S . , U n i v e r ­ s i t y of P i t t s b u r g h ) L . C. H e w i t t ( B . S . , I o w a S t a t e Silicate (1917) Dec. 1, 1935 College) Adolphus Koenig (M.D., Uni­ D e m u l c e n t (1934) Dec. 19, 1935 v e r s i t y of P i t t s b u r g h ) M . H . Bigelov» ( P h . D . , U n i v e r ­ Nitrogenous Reains Jan. 1, 1936 s i t y of P i t t s b u r g h ) (192S) E . W. Keid ( P h . D . , U n i v e r s i t y Organic Synthesis Jan. 1, 1936 of P i t t s b u r g h ) , s e n i u r f e l l o w (1914) F . H. R o b e r t s o n ( B . A . S c , U n i ­ v e r s i t y of T o r o n t o ) H . R. F i f e ( M . S . , W e s t V i r g i n i a University) B . G. W i l k e s ( P h . D . , C o l u m b i a University) A . G. B o e s e , J r . ( P h . D . , P r i n c e ­ ton U n i v e r s i t y ) H. D. Cogan (A.M., University of I l l i n o i s ) A. H. T e n n e y ( C h . E . , C o l u m ­ bia U n i v e r s i t y ) John Curry, assistant E . C. M a r t i n , a s s i s t a n t F . M . Strasler (B.S., U n i v e r ­ s i t y of P i t t s b u r g h ) , a s s i s t a n t R . G. R u a r k , a s s i s t a n t H. G. G o o d m a n , J r . ( M . S . , V i r ­ ginia Polytechnic I n s t i t u t e ) , assistant H. P. W h i t e (B.S., University of P i t t s b u r g h ) , a s s i s t a n t , t o F e b . 1, 1 9 3 5 C . P. C a r h a r t (A.B., Princeton University), assistant, t o Dec 1 1934 H . \V.* P e y s e r ( B . S . , Y a l e U n i ­ v e r s i t y ) , a s s i s t a n t , t o D e c . 1, 1934 C . C . D o n o v a n (B.S., Y a l e University), assistant, to D e c . 1, 1 9 3 4 T . VV. S h a r p ( A . B . , H a r v a r d University), assistant, to O c t . 1, 1 9 3 4 M . W . Lewis ( M . S . , U n i v e r s i t y of P i t t s b u r g h ) , a s s i s t a n t , t o A p r i l 1, 1 9 3 4 V. H . Boden (A.B., Wesleyan University), assistant, to A p r i l 1, 1 9 3 4 D . G . Bennett (B.S., Univer­ E n a m e l s (1925) s i t y of I l l i n o i s ) Jan. 1, 1936 O p t i c a l G l a s s (1931 ) F . L . J o n e s ( P h . D . , C o l u m b i a University) Jan. 1, 1936 E . R. H a r d i n g (A.M., Stanford F o o d Varieties U n i v e r s i t y ) , s e n i o r fellow Jan. 1, 1936 (1921) Helen B. W i g m a n (B.S., Uni­ v e r s i t y of P i t t s b u r g h ) W . C . Bell, a s s i s t a n t Insulation a n d R. H . Heilman (M.E., Univer­ Roofing (1916> s i t y of P i t t s b u r g h ) , s e n i o r fellow Jan. 1, 1936 R . \V. O r t m i l l e r ( M . S . , U n i v e r ­ s i t y of P i t t s b u r g h ) Petroleum Product i o n (1924) continued

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Smoke Abatement (1932) L a b o r a t o r y (1935) «Commodity S t a n d ards ( 1 9 3 1 )

1027

Heating (1929)

1028

Thread (1935)

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Shaving (1932)

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Textile Finishing (1934)

VOL. 13, N O . 8

F E L L O W S AND ASSISTANTS

L. B. Sisson Ε.

Ε. Marbaker (Ph.D., Uni­ v e r s i t y of P e n n s y l v a n i a ) Jules Labarthe, J r . (Ph.D., U n i v e r s i t y of P i t t s b u r g h ) , s e n i o r fellow A. F . T e s i ( B . S . , U n i v e r s i t y of Pittsburgh) M . S. M o r g a n , a s s i s t a n t , f r o m J u n e 1, 1934 J . L·. Y o u n g ( P h . D . , U n i v e r s i t y of P i t t s b u r g h ) T . A. W i l s o n ( P h . D . , U n i v e r ­ s i t y of Illinois) E. J. C a s s e l m a n ( B . S . , M a s s a ­ c h u s e t t s I n s t i t u t e of T e c h ­ nology) R. N. Wenzel ( P h . D . , Stanford University) J . K. Y o h e ( B . S . , P r i n c e t o n U n i v e r s i t y ) , a s s i s t a n t , from J u l y 2 t o S e p t . 1, 1 9 3 4

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Aluminum Powder for Waterproofing Fabrics C. H. S. T U P H O L M E , 6, Hamilton G a r d e n s , X . W. S, London, England BRITISH P A T E N T 414,212, covering t h e use of a l u m i n u m powder as a waterproofing agent, has been t a k e n o u t by F . Chabert, Marseilles, France. I t is claimed t h a t t h e powder, when incorporated in a plastic material, h a s t h e property of giving a product t h a t is m u c h more elastic t h a n t h e initial one. Aluminum, is a t t a c k e d with difficulty b y oxidation a n d is without action on f a t t y bodies. Tests have shown t h a t varnishes which are dried b y oxidation have their polymerization influenced b y the a l u m i n u m a n d t h a t t h e final transformation p r o d u c t is a l ­ ways more elastic t h a n t h e same product which dries without aluminum. Finally, a l u m i n u m has, in view of all its properties, to be considered as a n excellent insulator of calorific radiation. It i s owing t o t h e observation of these different properties that "the present patentee proposes to waterproof fabrics with t h e aid o f aluminum d u s t . His process is intended t o form a really waterproof coating which c a n be conveniently applied a n d whichi penetrates deeply into t h e fabrics which it covers. Th«e fabrics to be made waterproof a r e impregnated with aluminum, d u s t in a solution of paraffin wax containing a plasticizing agent. Normally, t h e solvent used for t h e paraffin wax is heavy benzine, t h e boiling point of which is a b o u t 160° C , a n d preferably t h e proportion of t h e a l u m i n u m d u s t with respect t o the solution is between 5 and 20 per cent. A suitable plasticizing agent consists of P a r a rubber. It is claimed t h a t t h e process h a s t h e following a d v a n t a g e s : Great suppleness of the coating and considerable elasticity. Great conservation of the waterproofing properties and of t h e suppleness of the fabric. Fabrics so treated become very bad media for transmitting calorific radiations. T h e waterproofing is increased by reason of the introduction into the waterproofing mass of an inert material which blocks up t h e pores, thus acting on the whole like a caulking. T h e external appearance of the cloth is improved in a lasting manner, owing to the inert character of aluminur.*.

SULFUR INDUSTRY I N 1934 T o SUPPLY the mineral industry p r o m p t l y with d a t a o n sulfur production a n d m a r k e t s during t h e p a s t year, t h e following information is furnished b y t h e United S t a t e s Bureau of Mines. Production a n d shipments of sulfur changed little in 1934 in comparison with 1933. Production increased slightly from 1,406,063 long tons in 1933 to 1,421,473 t o n s in 1934. S h i p m e n t s declined from 1,637,368 tons i n 1933, valued a t a b o u t $29,500,000 to 1,613,838 tons in 1934, valued a t a b o u t §28,900,000. Produc­ tion of sulfur was reported from California, Louisiana, a n d Texas. Texas w a s again t h e leading sulfur-producing s t a t e with, an o u t p u t in 19CÎ of 1,187,233 long tons, o r 8 4 p e r cent of the total for t h e country. I n 1933, T e x a s produced 1,083,445 tons, 77 per cent of the t o t a l . Shipments a m o u n t e d t o 1,302,663 tons in 1934, compared with 1,507,749 t o n s in 1933. Imports of 5839 long tons of sulfur ore were recorded by t h e Bureau of Foreign a n d Domestic Commerce in 1934. T h i s q u a n tity compares with 4773 long tons imported in 1933. Chile s u p plied, all sulfur received in the United S t a t e s in 1933 and in 1934. Exports of sulfur o r brimstone in 1934 totaled 503,312 long tons compared with 522,515 tons in 1933, a decrease of 4 per cent.