摘要:
The present invention relates to dispersion-based paints or varnishes, more particularly for use as coating material (architectural paint), which have a low pigment volume concentration (PVC), lower than the critical pigment volume concentration (CPVC). The varnishes have high water vapour permeability and low water absorption.They are notable for good weathering resistance and resistance to wet abrasion, shade stability and chalking stability, and a variable, adjustable gloss.
摘要:
Method of using polymers of alkylvinyl ethers whose alkyl radical has 2 to 18 carbon atoms with a weight average molecular weight M.sub.w of 400 to 10,000 in amounts of 1 to 200 ppm for preventing or eliminating foam on aqueous media.
摘要:
Compounds of the general formula ##STR1## wherein R.sup.1 is alkyl with 1 to 8 carbon atoms,R.sup.2 is --O-- or --(CH.sub.2).sub.p O--, in which p=2, 3 or 4,R.sup.3 is hydrogen, alkyl with 1 to 4 carbon atoms or acyl,n is 40 to 60m is 0 to 3,x and y being selected so that the molecular weight of the polyoxyalkylene block is 1400 to 3000 and the molar ratio of x:y is 0.8 to 2.2, are added to coating compositions, such as paint, varnish or lacquer, in amounts of 0.001 to 0.5% by weight, based on the coating composition. This improves the scratch resistance and the sliding ability of the cured coatings.
摘要:
The invention relates to the use of particular phosphoric esters as emulsifiers and dispersants for pigments and fillers, based on polystyrene-block (b)-polyalkylene oxide copolymers. The invention provides block copolymeric phosphoric esters and their salts of the general formula (I) [R1O(SO)a(EO)b(CH2CHCH3O)c(BO)d]xPO—(OH)3−x (I) where R1=a straight-chain or branched or cycloaliphatic radical having 1 to 22 carbon atoms, SO=styrene oxide, EO=ethylene oxide, BO=butylene oxide and a=1 to
摘要翻译:本发明涉及基于聚苯乙烯嵌段(b) - 聚环氧烷共聚物,特定磷酸酯作为颜料和填料的乳化剂和分散剂的用途。本发明提供了通式(I)的嵌段共聚磷酸酯及其盐,其中R 1 =具有1至22个碳原子的直链或支链或脂环族基团,SO =氧化苯乙烯,EO =环氧乙烷,BO =环氧丁烷,a = 1至<2,b = 3至100,c = 0至10, d = 0至3,x = 1或2其中b> = a + c + d。
摘要:
A composition useful for defoaming and/or deaerating liquid organic systems, such as crude oil, hydraulic oil, lacquer, varnish and paint is disclosed. The composition comprises(a) a polydiene of the general formula ##STR1## wherein Z=a chain-terminating groupR.sup.1 =hydrogen or methylR.sup.2 =alkyl with 1 to 6 carbon atoms or phenylR.sup.3 =the OR.sup.5 group, in which R.sup.5 =alkyl, the (C.sub.n H.sub.2n O).sub.m R.sup.6 group, in which R.sup.6 =alkyl, acyl or alkylaryl, n=2 or 3 and m.gtoreq.1, or the C.sub.p F.sub.2p+1 (CH.sub.2).sub.2 - group in which p=4 to 16, ##STR2## R.sup.7 =alkyl with 1 to 6 carbon atoms or phenyl, q.gtoreq.3, x,y.gtoreq.0,z.gtoreq.3,a=0 to 2,b=0 to 2, anda+b.ltoreq.2, and (b) an organic solvent in which the polydiene is dissolved. A method of deformation and/or deaerating organic systems with such polydienes is also disclosed.
摘要:
Polysiloxane-polyoxyethylene-polyoxypropylene triblock copolymers having the general formula: ##STR1## as well as compounds for the defoaming of aqueous dispersion paints that are disclosed contain the copolymers as effective defoaming components.