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US 2014/0193619 A1Published application
Hyperbranched polyesters in printing inks
AssigneeBASF SE
InventorsBernd Bruchmann, Monika Haberecht, Chien Lu Hsu, John Campbell, James W. Taylor
Life of this patent
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Abstract
The invention relates to multilayer materials for producing packaging comprising at least two films and also a layer which is printed with a packaging printing ink, said packaging printing ink comprising a certain hyperbranched polyester containing functional groups. The invention further relates to a packaging printing ink which comprises a certain hyperbranched polyester containing functional groups, and to the use of said printing ink for producing multilayer materials.
Claims15
A multilayer material comprising:
- a first film comprising a polymeric material;
- at least one print layer comprising a packaging printing ink;
- a second film;
- wherein:
- the packaging printing ink comprises at least a first binder and a second binder
- the first binder comprising at least one hyperbranched polyester containing functional groups selected from the group consisting of OH, COOH and COOR groups, wherein R comprises groups having from 1 to 60 carbon atoms and optionally may also contain heteroatoms or further substituents;
- the hyperbranched polyester comprises the polymerization product of:
- at least one acid selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, 1,2-cyclohexane dicarboxylic acid, 1,3-cyclohexane dicarboxylic acid, 1,4-cyclohexane dicarboxylic acid and
- methylhexahydrophthalic;
- and
- at least one at least trivalent aliphatic alcohol selected from the group consisting of trimethylolpropane, glycerol and pentaerythritol;
- a number average molecular weight of the hyperbranced polyester is at least 300 g/mol and a ratio of weight average molecular weight to number average molecular weight is about 1.2-10;
- the ratio of hydroxyl groups to carboxyl groups in the reaction mixture is from 2:1 to 1:2;
- the trivalent aliphatic alcohol is essentially free of diol groups;
- the second binder is selected from the group consisting of polyvinylbutyral, nitrocellulose, polyamides, polyurethanes, polyvinyl chlorides, polyketones, polycarbonates, polyacrylates and polyacrylate copolymers;
- and
- a weight ratio of the hyperbranched polyester to the total amount of all the binders is at least 50% by weight.
14 more elements
A printing ink binder comprising a of hyperbranched polyester that is a polymerization product of
- an acid selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, 1,2-cyclohexane dicarboxylic acid, 1,3-cyclohexane dicarboxylic acid, 1,4-cyclohexane dicarboxylic acid and methylhexahydrophthalic;
- and
- a trivalent aliphatic alcohol selected from the group consisting of trimethylolpropane, glycerol and pentaerythritol;
- wherein:
- the trivalent aliphatic alcohol is essentially free of diol groups;
- a number average molecular weight of the hyperbranched polyester is at least 300 g/mol and a ratio of weight average molecular weight to number average molecular weight of the hyperbranched polymer is about 1.1-20;
- and
- a ratio of acid group of the acid to hydroxyl groups of the trivalent aliphatic alcohol is from 2:1 to 1:2.
5 more elements
A printing ink comprising:
- a first binder comprising at least one hyperbranched polyester, the hyperbranched polyester comprising the polymerization product of:
- at least one acid selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, 1,2-cyclohexane dicarboxylic acid, 1,3-cyclohexane dicarboxylic acid, 1,4-cyclohexane dicarboxylic acid and methylhexahydrophthalic;
- and
- at least one at least trivalent aliphatic alcohol selected from the group consisting of trimethylolpropane, glycerol and pentaerythritol, wherein the trivalent aliphatic alcohol is essentially free of diols;
- wherein:
- a number average molecular weight of the hyperbranched polyester is at least 300 g/mol a ratio of a weight average molecular weight to the number average molecular weight is from about 1.1-20;
- a ratio of hydroxyl groups in the trivalent aliphatic alcohol to acid groups of the acid is from 2:1 to 1:2,
- a second binder selected from the group consisting of polyvinylbutyral, nitrocellulose, polyamides, polyurethanes, polyvinyl chlorides, polyketones, polycarbonates, polyacrylates and polyacrylate copolymers;
- at least one solvent;
- and
- a weight ratio of hyperbranched polyester to a total amount of all the binders is at least 50% by weight.
8 more elements
The printing ink of claim 15, wherein the additive is present in the ink from 0 wt % to 20 wt %.
Dependencies are inferred from the claim text.