C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 133/04 (2006.01) C09J 7/02 (2006.01) C09J 133/06 (2006.01) C08L 33/06 (2006.01)
Patent
CA 2105102
Abstract Pressure-sensitive contact adhesive which is characterized in that it comprises a mixture of A) 0 to 90 wt.% acrylic acid ester-vinyl acetate-acrylic acid copolymer with 2 to 8 carbon atoms in the alcohol component of the acrylic acid ester and, relative to the copolymer, 10 to 60 wt.% vinyl acetate and 1 to 10 wt.% acrylic acid (K value according to Fikentscher in the range 50 to 110 - measured according to DIN 51562 in tetrahydrofuran), B) 10 to 80 wt.% acrylic acid ester-acrylic acid-N- methylol methacrylamide copolymer with 4 to 8 carbon atoms in tyhe alcohol component of the acrylic acid ester and, relative to the copolymer, 1 to 10 wt.% acrylic acid and 1 to 10 wt.% self-crosslinking N- methylol methacrylamide (K value according to Fikentscher in the range 70 to 130 - according to DIN 51562 in tetrahydrofuran), C) 0 to 90 wt.% acrylic acid ester-ethyl acrylate-N- methylol methacrylamide-acrylic acid copolymer with 4 to 8 carbon atoms in the alcohol component of the acrylic acid ester and, relative to the copolymer, 1 to 10 wt.% acrylic acid and 1 to 10 wt.% self-cross- linking N-methylol methacrylamide and 20 to 80 wt.% ethyl acrylate (K value according to Fikentscher in the range 80 to 130 - measured according to DIN 51562 in tetrahydrofuran), D) 0 to 25 wt.% phthalic acid ester with 2 to 12 carbon atoms in the alcohol component of the ester. It is suitable for the production of manually-tearable contact adhesive tapes for the embroidery and textile industries.
Grabemann Juergen
Hauber Ruediger
Hans Neschen Gmbh & Co. Kg
Ridout & Maybee Llp
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