Polyvinylidene fluoride containing threads, fibers and films of good dye affinity, and process for obtaining them
AssigneeRhone-Poulenc-Textile
InventorsPaul Couchoud, Edouard Grimaud
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Abstract
The invention relates to threads, fibers or films comprising polyvinylidene fluoride, with good dye affinity for plastosoluble and cationic dyestuffs. More particularly, the invention relates to threads, fibers or films formed of a mixture of vinylidene fluoride homopolymer and of a copolymer containing at least 60% by weight of methyl methacrylate units and 5 to 40% by weight of units of at least one acid ethylenic comonomer, copolymerizable with methyl methacrylate. The threads and fibers in accordance with the invention can be used in particular in the field of textiles.
Claims7
Threads, fibers and films of good dye affinity for plastosoluble and cationic dyestuffs, comprising
- a mixture formed of a vinylidene fluoride homopolymer and a copolymer containing at least 60% by weight methyl methacrylate units and 5 to 40% by weight of units of a sulfonic acid ethylenic monomer selected from the group consisting of acrylamido-2-methyl-2-propane sulfonic acid and sulfoethyl methacrylate, or the alkaline salt, said mixture containing at least 40 acid milliequivalents per kg of polymer.
A spinnable and film formable compatible mixture of vinylidene fluoride homopolymer and a copolymer containing at least 60% by weight methyl methacrylate units and 5 to 40% by weight of a sulfonic acid ethylenic monomer selected from the group consisting of acrylamido-2-methyl-2-propane sulfonic acid and sulfoethyl methacrylate, or the alkaline salt, said mixture containing at least 40 acid milliequivalents per kg of polymer.
Dependencies are inferred from the claim text.