Rosin-modified phenol resin, lithographic printing ink, and printed product
AssigneeToyo Ink Sc Holdings 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.
Claims9
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) is 10 to 60.
A production method of the rosin-modified phenol resin (A), comprising the steps of:
- conducting a reaction of a rosin (b), a phenol (c) and a formaldehyde (d);
- and
- conducting a reaction of the compound obtained by the previous step 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.
A production method of the rosin-modified phenol resin (A), comprising
- conducting a reaction of the rosin (b), the phenol (c), the formaldehyde (d) and the polyol (e), wherein
- the rosin (b) contains 0.1 to 3.5% by mass of the monoterpene (a1) and the 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.
A production method of the rosin-modified phenol resin (A), comprising
- conducting a reaction of the rosin (b), a resol-type phenolic resin (Rc), and the polyol (e), wherein
- the rosin (b) contains 0.1 to 3.5% by mass of the monoterpene (a1) and the 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.
Dependencies are inferred from the claim text.