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US 11,591,488 B2Granted
Rosin-modified phenol resin, lithographic printing ink, and printed product
AssigneesToyo Ink Sc Holdings Co., Ltd., Toyo Ink Co., Ltd.
InventorKazuya Okamoto
Life of this patent
Estimating the term…
Abstract
A rosin-modified phenol resin (A) is a reaction product of a rosin (b), a phenol (c), a formaldehyde (d) and a polyol (e), wherein the rosin (b) contains 0.1 to 3.5% by mass of a monoterpene (a1) and a sesquiterpene (a2) relative to the total weight of the rosin, and Mw/Mn which is the ratio of the weight average molecular weight (Mw) and the number average molecular weight (Mn) is 10 to 60.
Claims5
A rosin-modified phenol resin (A) which is a reaction product of a rosin (b), a phenol (c), a formaldehyde (d) and a polyol (e), wherein
- the rosin (b) contains 0.1 to 3.5% by mass of a monoterpene (a1) and a sesquiterpene (a2) relative to the total weight of the rosin, and
- Mw/Mn, which is the ratio of the weight average molecular weight (Mw) and the number average molecular weight (Mn), of the rosin-modified phenol resin (A) is 10 to 60.
Dependencies are inferred from the claim text.