A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Aqueous polymer dispersions
The invention relates to aqueous polymer dispersions obtainable by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers M comprising a) 0.5 to 7.0% by weight, based on the total weight of monomers M, of a combination of a1) at least one monomer Ma1 selected from monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms and the salts thereof; a2) at least one monomer Ma2 selected from monoethylenically unsaturated dicarboxylic acids having from 4 to 8 carbon atoms and salts thereof; a3) at least one monomer Ma3 selected from the group consisting of monoethylenically unsaturated monosulfonic acids having 2 to 10 carbon atoms and salts thereof; b1) 60 to 79.45% by weight, based on the total weight of monomer M, of at least one monomer Mb1 selected from nonionic monoethylenically unsaturated monomers having a solubility in deionized water at 25 DEG C and 1 bar of at most 60 g/L and whose homopolymer has a glass transition temperature Tg of at least 50 DEG C; b2) 20 to 39.45% by weight, based on the total weight of monomer M, of at least one monomer Mb2 selected from nonionic monoethylenically unsaturated monomers having a solubility in deionized water at 25 DEG C and 1 bar of at most 60 g/L and whose homopolymer has a glass transition temperature Tg of at most 40 DEG C; c) 0.05 to 2.0 wt% of at least one crosslinking monomer Mc; wherein the aqueous emulsion polymerization is carried out at least partially in the presence of a chain transfer compound. The invention also relates to a method for preparing an aqueous polymer dispersion. The aqueous polymer dispersions are useful as binders in aqueous coating formulations, in particular as binders in aqueous coating formulations for shaped mineral articles.
本发明涉及水性聚合物分散体，其可通过烯键式不饱和单体M的自由基水性乳液聚合获得，所述单体M包含a)0.5至7.0重量％的以下物质的结合物，基于单体M的总重量计，a1)至少一种单体Ma1，选自具有3至6个碳原子的单烯键式不饱和一元羧酸及其盐；a2)至少一种单体Ma2，选自具有4至8个碳原子的单烯键式不饱和二元羧酸及其盐；a3)至少一种单体Ma3，选自具有2至10个碳原子的单烯键式不饱和单磺酸及其盐；b1)60至79.45重量％的至少一种单体Mb1，基于单体M的总重量计，其选自在25℃和1巴下在去离子水中的溶解度为至多60g/L的非离子单烯键式不饱和单体，并且其均聚物的玻璃化转变温度Tg至少为50℃；b2)20至39.45重量％的至少一种单体Mb2，基于单体M的总重量计，其选自在25℃和1巴下在去离子水中的溶解度为至多60g/L的非离子单烯键式不饱和单体，并且其均聚物的玻璃化转变温度Tg至多为40℃；c)0.05至2.0重量％的至少一种交联单体Mc；其中水性乳液聚合至少部分地在链转移化合物的存在下进行。本发明还涉及用于制备水性聚合物分散体的方法。水性聚合物分散体可用作水性涂料制剂中的粘合剂，特别是用作成型矿物制品的水性涂料制剂中的粘合剂。
Aqueous polymer dispersions
The invention relates to aqueous polymer dispersions obtainable by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers M comprising a) 0.5 to 7.0% by weight, based on the total weight of monomers M, of a combination of a1) at least one monomer Ma1 selected from monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms and the salts thereof; a2) at least one monomer Ma2 selected from monoethylenically unsaturated dicarboxylic acids having from 4 to 8 carbon atoms and salts thereof; a3) at least one monomer Ma3 selected from the group consisting of monoethylenically unsaturated monosulfonic acids having 2 to 10 carbon atoms and salts thereof; b1) 60 to 79.45% by weight, based on the total weight of monomer M, of at least one monomer Mb1 selected from nonionic monoethylenically unsaturated monomers having a solubility in deionized water at 25 DEG C and 1 bar of at most 60 g/L and whose homopolymer has a glass transition temperature Tg of at least 50 DEG C; b2) 20 to 39.45% by weight, based on the total weight of monomer M, of at least one monomer Mb2 selected from nonionic monoethylenically unsaturated monomers having a solubility in deionized water at 25 DEG C and 1 bar of at most 60 g/L and whose homopolymer has a glass transition temperature Tg of at most 40 DEG C; c) 0.05 to 2.0 wt% of at least one crosslinking monomer Mc; wherein the aqueous emulsion polymerization is carried out at least partially in the presence of a chain transfer compound. The invention also relates to a method for preparing an aqueous polymer dispersion. The aqueous polymer dispersions are useful as binders in aqueous coating formulations, in particular as binders in aqueous coating formulations for shaped mineral articles.
本发明涉及水性聚合物分散体，其可通过烯键式不饱和单体M的自由基水性乳液聚合获得，所述单体M包含a)0.5至7.0重量％的以下物质的结合物，基于单体M的总重量计，a1)至少一种单体Ma1，选自具有3至6个碳原子的单烯键式不饱和一元羧酸及其盐；a2)至少一种单体Ma2，选自具有4至8个碳原子的单烯键式不饱和二元羧酸及其盐；a3)至少一种单体Ma3，选自具有2至10个碳原子的单烯键式不饱和单磺酸及其盐；b1)60至79.45重量％的至少一种单体Mb1，基于单体M的总重量计，其选自在25℃和1巴下在去离子水中的溶解度为至多60g/L的非离子单烯键式不饱和单体，并且其均聚物的玻璃化转变温度Tg至少为50℃；b2)20至39.45重量％的至少一种单体Mb2，基于单体M的总重量计，其选自在25℃和1巴下在去离子水中的溶解度为至多60g/L的非离子单烯键式不饱和单体，并且其均聚物的玻璃化转变温度Tg至多为40℃；c)0.05至2.0重量％的至少一种交联单体Mc；其中水性乳液聚合至少部分地在链转移化合物的存在下进行。本发明还涉及用于制备水性聚合物分散体的方法。水性聚合物分散体可用作水性涂料制剂中的粘合剂，特别是用作成型矿物制品的水性涂料制剂中的粘合剂。
Aqueous polymer dispersions
水性聚合物分散体
WOLF THOMAS (author) / DENU HANS-JUERGEN (author) / DIMOU JOHN A (author) / WILLERICH IMMANUEL (author) / MOLLAT DU JOURDIN XAVIER (author)
2022-12-09
Patent
Electronic Resource
Chinese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C09D
Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke
,
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS
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