Patent ID: 11897974
Assignee: UPM-KYMMENE CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC C  D  Y | IPC C  D

Claim 14:
15. The method according to claim 1, wherein the thermoplastic poly(vinyl alcohol) derivative (CMP1; CMP2; CMP3)
has a degree of hydrolysis in the range of 65 to 90 mol-%, and/or
contains a vinyl group molality (bvin) which is equal to or higher than 0.01, millimoles per gram of the thermoplastic poly(vinyl alcohol) derivative, when determined from a known amount of solid reaction product (OBJ1) by first separating the carboxylic acid residue (RD1; RD2; RD3) and the thermoplastic poly(vinyl alcohol) derivative (CMP1; CMP2; CMP3) into two separate phases by means of heptane extraction, thereby forming two separate samples and then determining the amount of vinyl groups from the phase containing the thermoplastic poly(vinyl alcohol) derivative by iodometric titration method following the standard ISO 3961:2009(E), and/or
has a melt flow index in a range of 0.5-300 g/10 min, when measured with standard ISO 1 133 (210° C., 2.16 kg).