摘要:
A process for preparing jointing mortar includes using copolymers of ethylenically unsaturated monomers and of ethylenically functionalized nanoparticles in the form of their aqueous polymer dispersions or water-redispersible polymer powders. The copolymers are obtained by means of free-radically initiated polymerization in aqueous medium, and optionally subsequent drying of the resultant polymer dispersion, of A) one or more unsaturated monomers in the presence of B) at least one particle P having an average diameter of ≦1000 nm and functionalized with ethylenically unsaturated, free-radically polymerizable groups.
摘要:
Organosilicon compounds (P) containing &agr;,&bgr;-unsaturated carboxylic acid radicals, of the general formula (1) —A—O—C(O)—CR═CH2 (1), are prepared by a process in which, in a first step, organosilicon compounds (H) containing hydrogen atoms bonded directly to silicon are reacted with olefinically unsaturated compounds (U) containing a terminal double or triple bond, of the general formula (2) &OHgr;—O—C(O)—CRH—CH2—Z (2), in the presence of metals or compounds from the platinum group as catalyst, to give organosilicon compounds (E) containing radicals of the general formula (3) —A—O—C(O)—CRH—CH2—Z (3), and, in a second step, H—Z compounds are eliminated from organosilicon compounds (E), where A is a divalent organic radical, &OHgr; is a monovalent organic radical containing a terminal double or triple bond, R is an H atom or a methyl radical, and Z is Cl, I, Br or 4-methyltoluenesulfonyl.
摘要:
Particles with a structural surface which are useful to produce abrasion resistant self-cleaning surfaces contain particulate solid particles having a superstructured overlayer of fine particles. The particles may be prepared by polymerizing a polymerizable siloxane, silane, or mixture thereof in a Pickering emulsion.
摘要:
Particles with a structural surface which are useful to produce abrasion resistant self-cleaning surfaces contain particulate solid particles having a superstructured overlayer of fine particles. The particles may be prepared by polymerizing a polymerizable siloxane, silane, or mixture thereof in a Pickering emulsion.
摘要:
Particles with a structural surface which are useful to produce abrasion resistant self-cleaning surfaces contain particulate solid particles having a superstructured overlayer of fine particles. The particles may be prepared by polymerizing a polymerizable siloxane, silane, or mixture thereof in a Pickering emulsion.
摘要:
Particles with a structural surface which are useful to produce abrasion resistant self-cleaning surfaces contain particulate solid particles having a superstructured overlayer of fine particles. The particles may be prepared by polymerizing a polymerizable siloxane, silane, or mixture thereof in a Pickering emulsion.
摘要:
The invention provides copolymers of ethylenically unsaturated monomers and of ethylenically functionalized nanoparticles in the form of their aqueous polymer dispersions or water-redispersible polymer powders, obtainable by means of free-radically initiated polymerization in an aqueous medium and, if desired, subsequent drying of the resultant polymer dispersion, ofA) one or more monomers from the group consisting of vinyl esters, (meth)acrylic esters, vinylaromatics, olef ins, 1,3-dienes, vinyl ethers and vinyl halides and, if desired, further monomers copolymerizable therewith, in the presence ofB) at least one particle P having an average diameter of ≦1000 nm, which is functionalized with ethylenically unsaturated, free-radically polymerizable groups, characterized in thatB2) particles P used are one or more from the group of metal oxides and semimetal oxides, and/orB2) particles P used are silicone resins composed of repeating units of the general formula [R4(p+Z)SiO(4−p−Z)/2] (II), where for at least 20 mol % of the respective silicone resin p+z=0, 1 or 3,and where B1) and B2) are each functionalized with one or more α-organosilanes of the general formula (R1O)3−(R2)nSi—(CR32)—X (I), where X is a radical having 2 to 20 hydrocarbon atoms and containing an ethylenically unsaturated group.
摘要:
Copolymers of ethylenically unsaturated monomers and ethylenically functionalized nanoparticles in the form of aqueous polymer dispersions or water-redispersible polymer powders, are obtained by aqueous free-radically polymerizing and optionally drying a copolymerizate of,A) one or more ethylenically unsaturated monomers in the presence of B) particles having an average diameter of ≦1000 nm, functionalized with ethylenically unsaturated, free-radically polymerizable groups, wherein B1) particles are metal oxides or semimetal oxides, and/or B2) particles are silicone resins and where B1) and B2) are functionalized with one or more α-organosilanes of the formula (R1O)3−n(R2)nSi—(CR32)—X (I), where X is a radical having 2 to 20 hydrocarbon atoms containing an ethylenically unsaturated group.
摘要翻译:通过水溶液自由基聚合和任选地干燥A)一种或多种烯键式不饱和单体的共聚物,在存在下共聚物的情况下获得烯键式不饱和单体和烯键式官能化纳米颗粒的聚合物分散体或水可再分散聚合物粉末形式的共聚物 B)具有平均直径<= 1000nm的颗粒,用烯属不饱和的可自由基聚合的基团官能化,其中B1)颗粒是金属氧化物或半金属氧化物,和/或B2)颗粒是有机硅树脂,其中B1)和B2 )用一种或多种下式的α-有机硅烷(R 1 O 3)3-n(R 2)n n进行官能化 X(I),其中X是含有烯属不饱和基团的具有2-20个烃基的基团。
摘要:
A method of dispersing solid which is soluble to not more than 1 part by weight in 100 parts by weight of water at 20° C. and 1020 hPa, which method comprises incorporating at least one self-emulsifying organopolysiloxane (A) and then incorporating solid (B) into an aqueous composition.