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US 4,785,065 AGranted
Binders for transfer printing
AssigneeBASF SE
InventorsGuenter Uhl, Rudolf Toex, Gerhard Schroeder, Klaus Schnell
Life of this patent
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Abstract
Binders are used in printing inks and print pastes for transfer printing, consisting of copolymers of N-vinylcaprolactam, the use of these copolymers as binders in printing inks and printing pastes, and printing inks and print pastes containing these.
Claims2
A binder for transfer printing, consisting of a copolymer consisting of, based on the weight of the monomers,
- (a) 5-95% by weight of N-vinylcaprolactam,
- 95-5% by weight of N-vinylpyrrolidone and
- 0-30% by weight of an alkyl ester or hydroxyalkyl ester of acrylic acid or methacrylic acid where alkyl is of 1 to 14 carbon atoms or hydroxyalkyl is of 2 or 3 carbon atoms, of a vinyl ester of a saturated carboxylic acid of 2 or 3 carbon atoms, acrylic acid, methacrylic acid, maleic acid or itaconic acid, the monomeric carboxylic acids being in the form of their alkali metal or ammonium salts, acrylamide or methacrylamide, or mixtures of these monomers, or
- (b) 20-60% by weight of N-vinylcaprolactam and
- 80-40% by weight of an alkyl ester of acrylic acid or methacrylic acid where alkyl is of 1 to 14 carbon atoms, where alkyl is of 1 to 4 carbon atoms it is present in an amount of not more than 30% by weight.
2 more elements
Dependencies are inferred from the claim text.