AQUEOUS COLD SEAL ADHESIVE
    1.
    发明专利

    公开(公告)号:CA2981113A1

    公开(公告)日:2016-10-27

    申请号:CA2981113

    申请日:2016-04-08

    Applicant: BASF SE

    Abstract: Described is an aqueous cold seal adhesive in the form of an aqueous polymer dispersion comprising a mixture of a first polymer and a second polymer, wherein the first polymer is an emulsion polymer prepared in the presence of a protective colloid and is composed to an extent of at least 60% by weight of principal monomers selected from the group consisting of C1 to C20 alkyl (meth)acrylates and has a glass transition temperature of less than 0°C; and wherein the second polymer is an emulsion polymer prepared in the presence of a protective colloid and is composed to an extent of at least 60% by weight of principal monomers selected from the group consisting of vinylaromatics having up to 20 C atom, and has a glass transition temperature of at least 50°C. Also described are cold sealable coated polymer films coated with the aqueous cold seal adhesive and a method for producing a cold-sealed pack by applying the aqueous cold seal adhesive to a packaging substrate.

    Adhesivo acuoso de sellado en frío

    公开(公告)号:ES2775528T3

    公开(公告)日:2020-07-27

    申请号:ES16719785

    申请日:2016-04-08

    Applicant: BASF SE

    Abstract: Adhesivo acuoso de sellado en frío en forma de una dispersión acuosa de polímero que comprende una mezcla de al menos un primer polímero y al menos un segundo polímero en el que el primer polímero es un polímero en emulsión compuesto, en gran parte, de al menos 60 % en peso de monómeros principales seleccionados del grupo que consiste en (met)acrilatos de alquilo C1 a C20, siendo el primer polímero preparable por polimerización en emulsión de monómeros polimerizables por radicales libres en presencia de al menos un coloide protector y el primer polímero que tiene una temperatura de transición vítrea de menos de 0 º C; en el que el segundo polímero es un polímero en emulsión compuesto, en gran parte, de al menos 60 % en peso de monómeros principales seleccionados del grupo que consiste en vinilaromáticos que tienen hasta 20 átomos de C, siendo preparable el segundo polímero por polimerización en emulsión de monómeros polimerizables por radicales libres en presencia de al menos un coloide protector y el segundo polímero que tiene una temperatura de transición vítrea de al menos 50 ºC, las temperaturas de transición vítrea se determinan mediante calorimetría diferencial de barrido de acuerdo con ASTM D 3418-08 con una tasa de calentamiento de 20 ºC/min.

    AQUEOUS COLD SEAL ADHESIVE
    3.
    发明公开

    公开(公告)号:EP3286274A1

    公开(公告)日:2018-02-28

    申请号:EP16719785

    申请日:2016-04-08

    Applicant: BASF SE

    CPC classification number: C09J133/06 C08L25/00 C08L31/00

    Abstract: Described is an aqueous cold seal adhesive in the form of an aqueous polymer dispersion comprising a mixture of a first polymer and a second polymer, wherein the first polymer is an emulsion polymer prepared in the presence of a protective colloid and is composed to an extent of at least 60% by weight of principal monomers selected from the group consisting of C1 to C20 alkyl (meth)acrylates and has a glass transition temperature of less than 0°C; and wherein the second polymer is an emulsion polymer prepared in the presence of a protective colloid and is composed to an extent of at least 60% by weight of principal monomers selected from the group consisting of vinylaromatics having up to 20 C atom, and has a glass transition temperature of at least 50°C. Also described are cold sealable coated polymer films coated with the aqueous cold seal adhesive and a method for producing a cold-sealed pack by applying the aqueous cold seal adhesive to a packaging substrate.

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