Ambient or low-temperature curable coatings
Aqueous dispersions, containing hydrazine derivatives, of carbonyl-containing copolymers
Ambient or low-temperature curable coatings for leather and other flexible substrates
Contact adhesive dispersions for the production of self-adhesive articles, for example those having a polyolefinic base
Crosslinkable polymeric compositions which have a long shelf life when in the form of an aqueous solution or dispersion, their preparation and their use Patent #: 4786676
ApplicationNo. 210496 filed on 06/23/1988
US Classes:524/517, Solid polymer from oxygen heterocycle monomer524/379, Carbon atom single bonded to an oxygen atom and wherein the carbon atom is not double bonded to a chalcogen atom DNRM, e.g., alcohols, etc.524/522Solid polymer derived from carboxylic acid-containing monomer
ExaminersPrimary: Lilling, Herbert J.
Attorney, Agent or Firm
Foreign Patent References
International ClassesC08J 003/10
Foreign Application Priority Data1987-06-24 DE
AbstractAqueous polymer dispersions which have a long shelf life are obtainable by dispersing a mixture of 15-50% by weight of a copolymer (A) of(I) 1.5-15% by weight of copolymerizable compounds of 3 to 10 carbon atoms which contain a carboxyl or carboxylic anhydride group,(II) 30-98.5% by weight of C1 -C20 -alkyl acrylates or methacrylates,(III) 0-60% by weight of vinylaromatics,(IV) 0-20% by weight of copolymerizable carbonyl compounds and(V) 0-20% by weight of further copolymerizable organic compounds not stated under (I) to (IV) and50-85% by weight of a copolymer (B) of40-100% by weight of the monomers (II) and0-60% by weight of the monomers (III) to (V),with the proviso that the copolymers (A) and (B) together contain, as components, up to 65% by weight of alkyl (meth)acrylates (II) whose homopolymers have glass transition temperatures of less than 0° C., and that one or both of the copolymers (A) and (B) contain the monomers (IV) as components,in water with the addition of ammonia and a polyhydrazide (C), and the said dispersions are used for the preparation of finishes and coatings.