Patent ID: 11926958
Assignee: WACKER CHEMIE AG
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC C  D | IPC C  D

Claim 0:
1. An aqueous binder composition for fiber bonding, obtained by free-radical initiated polymerization of vinyl acetate and ethylene, in the presence of polyvinyl alcohol in aqueous medium, prepared by a process comprising:
polymerizing
a) 60 to 94% by weight vinyl acetate,
b) 5 to 30% by weight ethylene,
c) 0.4 to 5% by weight acrylamide and/or methacrylamide,
d) 0.4 to 5% by weight acrylic acid and/or methacrylic acid,
e) 0.2 to 2% by weight maleic anhydride and/or maleic acid,
in the presence of a polyvinyl alcohol having a degree of hydrolysis of 80 to 99 mol %,
wherein the figures in % by weight are relative to the total weight of the comonomers and total 100% by weight, and wherein no N-methylolacrylamide monomer is copolymerized.