Abstract:
The present invention provides an emulsion for pressure-sensitive adhesive, and a pressure-sensitive adhesive product which exhibits high water resistance and high adhesion properties. The emulsion for pressure-sensitive adhesive includes as essential components: a pressure-sensitive adhesive polymer (A) having a glass-transition temperature of -80 to -20°C, a weight-average molecular weight of 150,000 or larger, and a carboxylic acid value of 30 or smaller; a rosin derivative (B) having a weight-average molecular weight of 100,000 or smaller, and containing at least part of the carboxyl groups being alkali salt with a carboxylic acid value of 190 or larger before alkalization; and a compound (C) having a weight-average molecular weight of 100,000 or smaller, and having no carboxyl group but having at least one functional group reactive with a carboxyl group in its molecule. The amount of the rosin derivative (B) is 2 to 30 mass percent when the total amount of the pressure-sensitive adhesive polymer (A) and the rosin derivative (B) in the emulsion is defined as 100 mass percent, and the compound (C) is contained in the emulsion so that the functional group of the compound (C) is in an amount of 0.05 to 10 equivalents with respect to one equivalent of the carboxyl groups of the rosin derivative (B) before alkalization.
Abstract:
An aqueous dispersion composition which comprises an amino compound and an aqueous dispersion of a compound having in the molecule both at least one 5-membered cyclic dithiocarbonate group of general formula (I) and an ether linkage and which is useful in the fields of coating materials, adhesives, inks and so on; wherein R?1, R2 and R3¿ are each independently hydrogen or lower alkyl.
Abstract:
The present invention provides a composition which is effective for use in paints, adhesives, inks, and the like, comprising an aqueous dispersion of a compound containing at least one 5-membered ring dithiocarbonate group, expressed by the following general formula (I): (wherein R 1 , R 2 and R 3 are the same or different, and represent a hydrogen atom or a lower alkyl group) and an ether bond; and an amino compound.
Abstract:
Eine flüssige oder streichfähige vulkanisierbare Kautschukmischung auf Basis von mehreren Polymeren, von denen zumindest eines olefinisch ungesättigt ist, sollte so herstellt werden, daß sie nach zwei unterschiedlichen chemischen Reaktionsmechanismen, die nacheinander aktivierbar und zumindest weitgehend unabhängig voneinander katalysierbar sind, aushärtet. Dies gelang dadurch, daß man eine Kautschukmischung herstellt aus - 30 - 70 Gew.-Teile eines Polymere A mit im Mittel mindestens 2 Hydroxylgruppen pro Makromolekül - 70 - 30 Gew.-Teile eines mit A verträglichen Polymeren B mit im Mittel mindestens 2 Carbonsäure- und/oder Carbonsäureanhydridgruppen oder zumindest einer Carbonsäure und einer Carbonsäureanhydridgruppe pro Molekül - 10 - 120 Gew.-Teile Vulkanisationshilfsmittel und gewünschtenfalls Füllstoffe und/oder Hilfsstoffe und - gewünschtenfalls 0,01 - 5 Gew.-Teile Veresterungskatalysatoren, wobei zumindest eines der Polymeren A oder B unter üblichen Reaktionsbedingungen bei erhöhten Temperaturen über seine olefinischen Doppelbindungen vulkanisierbar ist.
Abstract:
Water-soluble triazabutadiene molecules and methods for producing and using such compounds. The triazabutadiene molecules may be more labile at pH levels below physiological pH, such as pH 7, pH 6, pH 5, etc. The triazabutadiene molecules and compounds may be used for depositing diazonium salt and/or cargo in a pH-sensitive manner. The triazabutadiene molecules may alternatively be cleaved in reducing conditions or as a light-catalyzed reaction. The compounds herein may be used for delivery of drugs, as part of detection systems, or for other applications such as underwater adhesive applications.
Abstract:
The invention describes new synthetic medical adhesives and antifouling coatings which exploit the key components of natural marine mussel adhesive proteins.