A method of preventing polymer scales from sticking in a polymerization vessel during the polymerization of a monomer having an ethylenically double bond, wherein said polymerization is carried out in a polymerization vessel of which the inner wall and other parts with which said monomer comes into contact during polymerization are previously first coated with (a) a coating solution comprising a cationic dye and the resulting coating is then coated with (b) a coating solution comprising at least one component selected from the group consisting of anionic polymeric compounds, amphoteric polymeric compounds and hydroxyl group-containing organic compounds. Polymer scale formation can be effectively prevented.
[EN] The present invention relates to methods of providing a desired effect to the skin of a mammal using a Maillard initiating reagent with a skin-modifying compound. [FR] La présente invention concerne des procédés permettant d'obtenir un effet souhaité sur la peau d'un mammifère en utilisant une réaction de Maillard avec un composé modifiant la peau.
484. Quinones. Part VI. Some new polyhydroxynaphthaquinones