Patent ID: 11920024
Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC C  H

Claim 2:
3. A composition comprising:
(A) a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid and/or (B) carboxymethyl cellulose or a salt thereof; and
water,, wherein when the viscosity of the composition after being adjusted to a temperature of 25° C. is defined as Xc (Pa·s) and the viscosity of the composition after being placed in an airtight container after the adjustment to 25° C. and being allowed to stand at 25° C. for 3 days is defined as Xd (Pa·s), the viscosity increase obtained by the following formula is 0 to 10%:

Viscosity increase (%)=(Xd−Xc)/Xc×100,

wherein the viscosities used to calculate the viscosity increase are values measured using a Brookfield viscometer at 30 rpm and a liquid temperature of 25° C.