B - Operations – Transporting – 41 – N
Patent
B - Operations, Transporting
41
N
B41N 3/08 (2006.01)
Patent
CA 2097415
The subject invention relates to an improved lithographic dampening solution comprising a diluted dampening solution concentrate having mixed therein a micro- emulsion formulation which spontaneously emulsifies upon mixing with the diluted dampening solution concentrate, the micro-emulsion formulation comprising a mono-, di-, or tripropylene glycol or other glycol having at least 3 carbons; a partially water soluble mono-, di-, or tripropylene glycol C1 to C6 alkyl ether; and, a wholly or partially water soluble polymer having an acid value of from about 5 to about 50. The subject invention further relates to a micro-emulsion formulation as previously stated or as stated hereinabove which further contains a nonionic surfactant of HLB 2-10 and a water soluble thickener. The invention further relates to a method for preparing the above-defined improved lithographic dampening solution.
L'invention porte sur une solution de mouillage améliorée pour lithographie, renfermant un concentré dilué de solution de mouillage, contenant lui-même sous forme de mélange une formulation micro-émulsion qui s'émulsionne spontanément lors du mélange avec le concentré; la formulation micro-émulsion comprend un mono-, di-, ou tripropylèneglycol ou un autre glycol renfermant au moins 3 atomes de carbone, un éther alkyle C1 à C6 de mono-, di- ou tripropylèneglycol, partiellement hydrosoluble, et un polymère partiellement ou totalement hydrosoluble, possédant un indice d'acide de 5 à 50 environ. L'invention porte également sur une formulation micro-émulsion, comme celle décrite ci-dessus, qui renferme aussi un surfactif non ionique avec un HLB de 2-10 et un épaississant hydrosoluble. Enfin, l'invention présente une méthode pour préparer la solution de mouillage améliorée pour lithographie, décrite ci-dessus.
Conti Ronald S.
Dwyer Terry L.
Ramanauskas Donatas
Gowling Lafleur Henderson Llp
Varn International Inc.
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