US 12,441,820 B2
Method for manufacturing thermoplastic poly(vinyl alcohol) derivative in a melt state reaction and products thereof
Kuisma Littunen, Lappeenranta (FI); Harri Kosonen, Lappeenranta (FI); Janne Antila, Hämeenlinna (FI); Jaakko Rautalahti, Valkeakoski (FI); and Mikko Rissanen, Espoo (FI)
Assigned to UPM-KYMMENE CORPORATION, Helsinki (FI)
Filed by UPM-Kymmene Corporation, Helsinki (FI)
Filed on Dec. 21, 2023, as Appl. No. 18/391,895.
Application 18/391,895 is a division of application No. 17/434,870, granted, now 11,897,974, previously published as PCT/FI2019/050225, filed on Mar. 18, 2019.
Prior Publication US 2024/0124620 A1, Apr. 18, 2024
Int. Cl. D21H 19/20 (2006.01); C08F 8/14 (2006.01); C08F 16/06 (2006.01); C09J 7/21 (2018.01); C09J 7/40 (2018.01); D21H 19/32 (2006.01); D21H 19/82 (2006.01); D21H 27/00 (2006.01); D21H 27/06 (2006.01)
CPC C08F 16/06 (2013.01) [C08F 8/14 (2013.01); C09J 7/21 (2018.01); C09J 7/401 (2018.01); D21H 19/20 (2013.01); D21H 19/32 (2013.01); D21H 19/824 (2013.01); D21H 27/001 (2013.01); D21H 27/06 (2013.01); C08F 2810/30 (2013.01); C09J 2400/283 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A paper substrate which is suitable for binding silicone in a catalytic hydrosilation reaction, the paper substrate comprising
a cellulose fiber-based support layer and
a primer layer which contains thermoplastic poly(vinyl alcohol) derivative which contains ester bonded pendant chains of which at least some end into vinyl groups,
wherein the ester bonded pendant chains that end into vinyl groups contain a catenated carbon structure of at least 4 carbon atoms, the primer layer further comprising carboxylic acid residue and/or salt of said carboxylic acid residue, and wherein the carboxylic acid residue and/or the salt of said carboxylic acid residue is an organic compound that contains the same kind of catenated carbon structure of at least 4 carbon atoms that end into vinyl group as the ester bonded pendant chains.