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 0:
1. A composition in the form of an aqueous solution 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,, wherein when the viscosity of the composition after being diluted with water (25° C. or less) to a viscosity of 200±100 mPa·s at room temperature (25° C.) and adjusted to a temperature of 25° C. is defined as Xa1 (Pa·s), and the viscosity of the composition after being placed in an airtight container and allowed to stand at 95° C. for 8 hours is defined as Xb1 (Pa·s), the change rate obtained by the following formula is 0 to 10%:

Change rate (%)=(Xa1−Xb1)/Xb1×100,

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