Oil-base ballpoint ink composition and oily ballpoint pens
First Claim
1. An oil-based ballpoint ink composition comprising, as the main solvent, a solvent represented by the following chemical structural formula:
- (wherein R1, R2 and R3 each is independently H or CH3) and further containing at least one or more surfactant selected from the group consisting of;
a polyoxyethylene alkyl ether, a fatty acid polyoxyethylene alkyl ether, a polyethylene glycol fatty acid ester, a polyoxyethylene glycerin fatty acid ester, and a polyoxyethylene sorbitan fatty acid ester.
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Accused Products
Abstract
A ballpoint ink composition capable of preventing a blobbing phenomenon by controlling the volatility of the ink solvent to prevent extreme drying on the ball surface and control the internal cohesion of the ink is provided, which is an oil-based ballpoint ink composition comprising, as the main solvent, a solvent represented by the following chemical structural formula and further containing at least one or more surfactant selected from the group consisting of a polyoxyethylene alkyl ether, a fatty acid polyoxyethylene alkyl ether, a polyethylene glycol fatty acid ester, a polyoxyethylene glycerin fatty acid ester and a polyoxyethylene sorbitan fatty acid ester:
(wherein R1, R2 and R3 each is independently H or CH3).
-
Citations
14 Claims
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1. An oil-based ballpoint ink composition comprising, as the main solvent, a solvent represented by the following chemical structural formula:
-
(wherein R1, R2 and R3 each is independently H or CH3) and further containing at least one or more surfactant selected from the group consisting of;
a polyoxyethylene alkyl ether, a fatty acid polyoxyethylene alkyl ether, a polyethylene glycol fatty acid ester, a polyoxyethylene glycerin fatty acid ester, and a polyoxyethylene sorbitan fatty acid ester. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
R—
O—
(—
CH2CH2O)nH(wherein R is an alkyl group and n is an integer of 1 or more).
-
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8. The oil-based ballpoint ink composition as claimed in any one of claims 1 to 6, wherein the fatty acid polyoxyethylene alkyl ether is a compound represented by the following formula:
-
(wherein R and R1 each is an alkyl group and n is an integer of 1 or more).
-
-
9. The oil-based ballpoint ink composition as claimed in any one of claims 1 to 6, wherein the polyethylene glycol fatty acid ester is a compound represented by the following formula:
-
(wherein R is an alkyl group and n is an integer of 1 or more).
-
-
10. The oil-based ballpoint ink composition as claimed in any one of claims 1 to 6, wherein the polyoxyethylene glycerin fatty acid ester is a compound represented by the following formula:
-
(wherein R is an alkyl group, and n and m each is an integer of 1 or more),
-
-
11. The oil-based ballpoint ink composition as claimed in any one of claims 1 to 6, wherein the polyoxyethylene sorbitan fatty acid ester is a compound represented by the following formula:
-
(wherein R is an alkyl group, and 1, m and n each is an integer of 1 or more).
-
-
12. An oil-based ballpoint pen comprising an ink reservoir tube equipped with a ballpoint pen tip at the distal end and an oil-based ballpoint ink composition housed in the ink reservoir tube, wherein said oil-based ballpoint ink composition is the oil-based ballpoint ink composition claimed in any one of claims 1 to 11.
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13. The oil-based ballpoint pen as claimed in claim 12, which comprises an ink follower within the ink reservoir tube.
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14. The oil-based ballpoint pen as claimed in claim 12 or 13, wherein a metal or ceramic ball is used.
Specification