PATENT ABSTRACTS 327

these products flowing within the cell and they are converted directly to nitric acid in the solu- tion as it flows from the cell.

C6alkynyl, C3-C7cycloalkyl, or phenyl which is unsubstituted or substituted by halogen, C1- C6alkyl, Cl-C6haloalkyl or Cl-C6alkoxy, with the proviso that only R5 or R6 may be hydrogen.

4705689

U S E O F A Q U E O U S S O D I U M O R P O T A S S I U M M E T H I O N I N A T E

S O L U T I O N F O R S U P P L E M E N T A L M I X E D F O D D E R S W I T H

M E T H I O N I N E

Herber Tanner, Heidrun-Leonore Bertram, Reinhard Richter, Manfred Spindler, Hanau, Federal Republic Of Germany assigned to Degussa Aktiengesellschaft

In place of using solid DL-methionine for sup- plementing mixed fodders there are used sodium or potassium methioninate solutions. In com- parison to solid methionine they are more easily dosable and can be more easily homogeneously mixed with the remaining components. Em- ploying equimolar amounts they show the same methionine activity as solid methionine.

4705816

L I Q U I D M U L C H

Ernest G Pole, David Carnell, Sarnia, Canada assigned to Polysar Limited

The disadvantages associated with using plastic sheet mulch may be overcome and enhanced crop production obtained by applying to an agri- cultural domain an aqueous compound capable of forming a durable crust under the condition of use comprising per 100 parts by weight of poly- meric binder from about 100 to about 1,600 parts by weight of a fine particulate filler to pro- vide a dry coat weight from 0.1 to 5.0 ounces per square foot.

4705900

I N S E C T I C I D A L A L K E N E S

4705800

D I F L U O R B E N Z O D I O X Y L C Y A N O P Y R R O L E

M I C R O B I C I D A L C O M P O S I T I O N S

Robert Nyfeler, Josef Ehrenfreund, Basel, Swit- zerland assigned to Ciba-Geigy Corporation

The invention relates to novel 3-phenyl-4- cyanopyrrole derivatives of the general formula See Patent for Chemical Structure wherein X has the following meaning: A: hydrogen or CO-R l, wherein R 1 is C I-C6alkyl which is unsubstituted or substituted by halogen or C I-C3alkoxy; or is C3-C6alkenyl, C3-C6alkylnyl, or CI-C6alkoxy which is unsubstituted or substituted by halogen or Cl-C3alkoxy; or is C314 C6alkenyloxy, or C3-C6cycloalkyl; B: S-R2, wherein R2 is CI- C3haloalkyl; C: CH(Y)R3, wherein R3 is hydro- gen or CI-C8haloalklyl and Y is hydroxy, halogen or OC(O)R4, wherein R4 is Cl-C8alkyl, CI-C8haloalkyl, C2-C6alkenyl, or CI- C6alkoxycarbonyl; or D: CH2-Z, wherein Z is the group See Patent for Chemical Structure in which formula each of R5 and R6 independently of the other is hydrogen, Cl-C6alkyl which is unsubstituted or substituted by cyano or C1- C6alkoxycarbonyl; or is C3-C6alkenyl, C3-

Alan Whittle, Aldershot, United Kingdom as- signed to Imperial Chemical Industries PLC

Compounds of formula R3-CH double bondCH-CRIR2-CH2OCH2R4 wherein RI and R2 are H, alkyl or together form a cycloalkyl group with the adjacent carbon, R3 is a sub- stituted phenyl group, R4 is an optionally sub- situted phenoxy phenyl group, and compositions containing them useful as insecticides, and com- pounds of formula HOCH2-CR 1R2- CH2OCH2R4 and OCH- CR1R2CH2OCH2R4, useful as intermediates therefor.

4706080

I N T E R C O N N E C T I O N O F B R O A D C A S T N E T W O R K S

Walter Sincoskie assigned to Bell Communica- tions Research Inc

A process is disclosed for effecting transmission over a generally cyclic communication system comprising numerous networks interconnected by gateway pairs. Each gateway of each pair im- plements a store-and-forward protocol whereby