Paper making and fiber liberation – Processes and products – Conditioning – preparing or repairing of apparatus
Patent
1997-04-23
1998-07-07
Czaja, Donald E.
Paper making and fiber liberation
Processes and products
Conditioning, preparing or repairing of apparatus
162DIG4, D21F 132
Patent
active
057763100
ABSTRACT:
This invention relates to the treatment of press section felts. The treatment comprises applying to the felts an effective amount of a felt cleaning agent comprising one or more anionic polymers, selected from the group of polycarboxylic acids and derivatives thereof having an average molecular weight of 500 to less than 5000, 2-phosphino-1,2,4-tricarboxybutane, and an amphoteric surfactant selected from the group consisting of alkyl-N-(3 aminopropyl)-glycines and alkyl-di(aminoethyl)-glycines. The cleaning agent inhibits the blinding of paper machine press section felts and provides improved felt conditioning at much lower concentration levels than known commercial products.
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McDermott Michael Anthony
Schuetz Jurgen Friedrich
BetzDearborn Inc.
Czaja Donald E.
Fortuna Jos'e A.
Ricci Alexander D.
Von Neida Philip H.
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