METHOD FOR REDUCING SPEED OF PHOTOYELLOWING Russian patent published in 2010 - IPC D21H17/65 D21H19/00 D21H19/12 D21H21/30 D21H21/32

Abstract RU 2403332 C2

FIELD: textile, paper.

SUBSTANCE: method concerns reducing speed of photoyellowing of paper containing mechanical pulp. The method includes coating the surface of a paper sheet during papermaking of aqueous solution containing an effective amount of one or more salts of thiocyanic acid.

EFFECT: improvement of stability to photoyellowing of paper and cost-effective way while reducing its toxicity.

16 cl, 10 tbl

Similar patents RU2403332C2

Title	Year	Author	Number
METHOD FOR PRODUCTION OF BLEACHED CELLULOSE MATERIAL, METHOD FOR PREVENTION OF YELLOWING AND LOSS OF WHITENESS IN BLEACHED CRAFT-CELLULOSE IN STORAGE AND METHOD FOR PRODUCTION OF PAPER GOODS	2006	Daggirala Prasad Shevchenko Sergej	RU2387751C2
METHOD TO PREPARE BLEACHED PAPER MATERIAL AND PAPER ITEM (ITS VERSION)	2007	Duggirala Prasad J. Shevchenko Sergej M. Brodus Kehtrin M.	RU2419700C2
PULP PRODUCTION METHOD	2000	Moberg Anders Peng Frank Fredlund Mats	RU2224060C2
IMPROVED CRAFT CELLULOSE FIBRES	2006	Tan Zheng Gojal Goupehl Koukoulas Aleksandr A.	RU2388441C2
METHOD AND CHEMICAL COMPOSITION FOR IMPROVING EFFICIENCY OF PRODUCING MECHANICAL PULP	2010	Duggirala Prasad Shevchenko Sergej M.	RU2530386C2
METHOD TO PRODUCE MODIFIED CELLULOSE FOR USE IN PRODUCTS FROM PAPER OR PAPER WEB, BLEACHED MODIFIED SULFATE CELLULOSE, PAPER OR CARDBOARD	2006	Tan Zheng Gojal Goupehl Koukoulas Aleksandr A.	RU2454494C2
METHOD OF BLEACHING CELLULOSE PULP (ITS VERSION), BIODEGRADABLE CHELATION AGENT FOR BLEACHING CELLULOSE PULP WITH HYDROGEN PEROXIDE, AND METHOD OF REMOVING PRINTER'S INK FROM CELLULOSE PULP	1994	Ehlt'O Bulema Sharl' Mannjuehl' Navarro Lambertus Gerkhardus Jokhannus Olde Khanter Marsellinus Aleksander Van Dorn	RU2131491C1
METHOD OF PRODUCTION OF WOOD FIBROUS PULP AND WOOD FIBROUS PULP PRODUCED BY THAT METHOD	2003	Peng Frank Ferritsius Rita Ehngsos Ul'F	RU2322540C2
BROWN BAG PAPER CAPABLE OF DECOMPOSITION	2015	Rennel Wennberg, Camilla Andersson Avitsland, Grete	RU2691364C2
METHOD FOR PRODUCTION OF HYGIENIC PAPER ARTICLES FROM NEWSPAPER WASTE	1995	Sango Behk Nikolas V.Lazorisak Norman L.Smeltser Dzhon F.Shmitt	RU2127343C1

RU 2 403 332 C2

Authors

Shevchenko Sergej M.

Daggirala Prasad J.

Dates

2010-11-10—Published

2006-12-14—Filed