Aqueous coating compositions include an anionic species-scavenging system. The scavenging system includes an aqueous dispersion of water-insoluble, weak base-functional polymer particles. The particles are polymerized from monomer including a weak base-functional monomer such as 2-(diethylamino)ethyl methacrylate or 2-(t-butylamino)-ethyl methacrylate. A two stage process may be employed to prepare the particles and 2-(dimethylamino)-ethyl methacrylate may be included only in the initial stage. Alternatively, a single stage process may be employed using 2-(t-butylamino)methacrylate. The system also includes a volatile base such as ammonia to maintain the pH of the composition above the pKa of the weak base prior to and during application of the composition. As the volatile base is lost, the weak base is protonated and forms ion pairs with anionic species such as anionic surfactant. The compositions form coatings having good water resistance, and may be used as paints, paper coatings, caulking materials, adhesives, binders for non-woven products and for floor polishes and printing inks.
A paint composition comprising cationic latex polymeric binder, pigment and selective cationic pigment dispersant is disclosed. The paint compositions, which demonstrate the advantages of a water-based system, also exhibit excellent stain blocking, corrosion resistance, water sensitivity resistance and adhesion to wood and alkyd surfaces which are competitive in performance with conventional solvent based alkyd primers.
Verfahren zur Herstellung von Aminovinylethern der allgemeinen Formel I
in der
X C3- bis C2o-Alkyl, C3- bis C8-Cycloalkyl, Aryl oder (CH2)nCHR2,
R1 Wasserstoff, C1- bis C2o-Alkyl, C3- bis C8-Cycloalkyl, Aryl oder gemeinsam mit R2 eine C1- bis C7-Alkylenkette und
n eine ganze Zahl von 1 bis 4
bedeuten, indem man einen Aminoalkohol der allgemeinen Formel II
in der X, R1, R2 und n die oben genannten Bedeutungen haben, mit Acetylen in einem Gemisch aus Dimethylsulfoxid und einer Base bei Temperaturen von 60 bis 160°C und bei Drücken von 1 bis 25 bar umsetzt.
通式 I 氨基乙烯基醚的制备工艺
在
X 是 C3-至 C2o-烷基、C3-至 C8-环烷基、芳基或 (CH2)nCHR2、
R1 是氢、C1-至 C2o-烷基、C3-至 C8-环烷基、芳基或与 R2 一起是 C1-至 C7-亚烷基链,以及
n 是 1 至 4 的整数
通式 II 的氨基醇
其中 X、R1、R2 和 n 具有上述含义,在二甲亚砜和碱的混合物中与乙炔在 60 至 160°C 的温度和 1 至 25 巴的压力下反应。
Polymers and process for controlling rheology of aqueous compositions
申请人:Rohm and Haas Company
公开号:EP1520909A1
公开(公告)日:2005-04-06
The present invention relates to a composition and process for stabilizing the rheology of softeners including fragrances and softeners including added fragrances using cationic emulsion polymers.
A method of marking substrates and marked containers are disclosed. A method comprises the steps of applying and curing a coating composition comprising (a) a matrix forming material comprising an inorganic oxide or inorganic oxide precursor, and (b) an organic pore forming agent. The marking is provided by removing at least a portion of the organic pore forming agent in a selected location of the coating layer. The marking may be provided on a container with a product or heat-sensitive product inside. Additional embodiments relate to multi-layer coatings and methods for forming multi-layer coatings.