Polyacrylamide resin, papermaking additive, and paper
AssigneeHarima Chemicals, Inc.
InventorsTakahiro FUJIWARA, Atsushi FUKUDA
Life of this patent
Estimating the term…
Abstract
A polyacrylamide resin has at least one kind of a first unit represented by the following formulas (1) to (4) and a second unit represented by the following formula (5). (In the above-described formulas (1) to (4), R1 represents a hydrogen atom, a methyl group, an ethyl group, or a benzyl group; R2 and R3 are independent and represent a hydrogen atom, a methyl group, an ethyl group, or a benzyl group; and X represents an anion.) (In the above-described formula (5), R4 represents a hydrogen atom or a methyl group and R5 represents a hydrogen atom, an alkali metal ion, or an ammonium ion.)
Claims4
A polyacrylamide resin having at least one kind of a first unit represented by the following formulas (1) to (4) and
- a second unit represented by the following formula (5).
- (In the above-described formulas (1) to (4), R1 represents a hydrogen atom, a methyl group, an ethyl group, or a benzyl group. R2 and R3 are independent and represent a hydrogen atom, a methyl group, an ethyl group, or a benzyl group;
- and X represents an anion.)
- (In the above-described formula (5), R4 represents a hydrogen atom or a methyl group and R5 represents a hydrogen atom, an alkali metal ion, or an ammonium ion.)
Dependencies are inferred from the claim text.