Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
50 words
In a UV-drying printing ink having a black pigment therein the improvement comprising employing as the black pigment a carbon black having the following physical and chemical properties: ______________________________________
BET surface area
m.sup.2 /g 20-50
Particle diameter
nm 30-80
DBP adsorption ml/100g 30-100
Volatile constituents
% 3-10
pH 3-6
______________________________________
Claim 2
Dependent Claim
50 words
In a UV-drying printing ink having a black pigment therein the improvement comprising employing as the black pigment a carbon black having the following physical and chemical properties: ______________________________________
BET surface area
m.sup.2 /g 20-50
Particle diameter
nm 30-80
DBP adsorption ml/100g 30-100
Volatile constituents
% 3-10
pH 3-6
______________________________________
Claim 3
Dependent Claim
39 words
A printing ink according to claim 1 wherein the carbon black is obtained by post oxidation of large particled furnace black having the following properties: Bet surface area--20-50 m 2 /g Particle diameter--30-80 nm, and Dbp adsorption--30-100 ml/100 g
Claim 4
Dependent Claim
36 words
A printing ink according to claim 2 wherein the post oxidation is carried out with NO 2 and air at 80 to 200° C. and the excess NO 2 is replaced by air after the reaction.
Claim 5
Dependent Claim
15 words
A printing ink according to claim 3 wherein the UV-drying ink comprises a UV-drying acrylate.
Claim 6
Dependent Claim
25 words
A printing ink according to claim 4 containing 5 to 20 weight % of the carbon black based on the weight of the printing ink.
Claim 7
Dependent Claim
25 words
A printing ink according to claim 2 containing 5 to 20 weight % of the carbon black based on the weight of the printing ink.
Claim 8
Dependent Claim
17 words
A printing ink according to claim 6 containing 10 to 16 weight % of the carbon black.
Claim 9
Dependent Claim
16 words
A printing ink according to claim 2 wherein the UV-drying ink comprises a UV-drying acrylate polymer.
Claim 10
Dependent Claim
25 words
A printing ink according to claim 1 containing 5 to 20 weight % of the carbon black based on the weight of the printing ink.
Claim 11
Dependent Claim
26 words
A printing ink according to claim 9 containing 10 to 16 weight % of the carbon black based on the weight % of the printing ink.
Claim 12
Dependent Claim
15 words
A printing ink according to claim 1 where the UV-drying ink comprises a UV-drying acrylate.