摘要:
Coupling agent and primer compositions comprising a conventional silane coupling agent (1), and a disilyl crosslinker compound (II) of the general formula(RO).sub.3 SiR'Si(OR).sub.3where RO denotes a hydrolyzable group, R' denotes a divalent organic radical, and the weight ratio of (I) to (II) is between 1:99 and 99:1 inclusive.
摘要:
Novel ionomeric silane coupling agents are disclosed and their use in bonding a matrix polymer to a mineral substrate is described. The coupling agents comprise amic acid-functional silanes which are partially neutralized with metal cations and are prepared by reacting a mixture of (I) an amine-functional silane, (II) a stoichiometric excess of a dicarboxylic organic acid and (III) an ionic compound containing a metal cation, wherein 10% to 80% of the excess carboxylic acid functionality is neutralized by the metal cations. The coupling agents greatly improve bonding to the matrix polymer in moist environments and are particularly suitable for use in formulating filled injection molding compositions.
摘要:
A novel ionomeric silane coupling agent is disclosed and its use in bonding a matrix polymer to a mineral substrate is described. The coupling agent is prepared by partially neutralizing the combined acid functionality present in a mixture of an acid-functional silane (or metal salt thereof) and an acid-functional film former with a metal ion. The coupling agent greatly improves bond strength in moist environments and is particularly suitable for use in formulating filled injection molding compositions.
摘要:
This invention provides novel silanes and bis-silylhydrocarbons that contain a plurality of silicon-bonded alkoxy groups and at least one substituent that is bonded to silicon through oxygen and contains at least four carbon atoms, two of which form a terminal group of the formula CH.sub.2 .dbd.CH--. A preferred class of these compounds will cohesively bond polyorganosiloxane elastomers and resins to both organic and inorganic substrates.
摘要:
A method is disclosed for producing an improved polyvinyl chloride plastisol or organosol coating composition having improved adhesion to glass, metal or fabrics. The composition is obtained by adding to the plastisol or organosol from 0.1 to 2 weight percent of a devolatilized product of hydrolysis of an aminofunctional organotrialkoxysilane of the formula (RO).sub.3 SiCH.sub.2 CH.sub.2 CH.sub.2 NH--(CH.sub.2 CH.sub.2 NH).sub.x H wherein R is a monovalent alkyl radical of from 1 to 3 carbon atoms and x is zero or 1 and optionally a filler. The silane is hydrolyzed with at least 0 .5 moles of water per mole of silane. The compositions are stabilized in respect to viscosity by including 0.5 to 1.1 mole per mole of primary amino group in the hydrolyzed silane product of a compatible carboxylic acid boiling above 150.degree. C. at atmospheric pressure.
摘要:
A method for stabilizing an unsaturated organosilicone is disclosed wherein a stabilizing amount of a hydroxylamine compound is added to the organosilicone to prevent thermal polymerization of the latter. The organosilicone may be an alkoxysilane or an organopolysiloxane having in its molecule a reactive organic group bearing at least one radical selected from acryloxy, methacryloxy, acrylamide, methacrylamide, styryl or vinylbenzyl radicals. The hydroxylamine compound may be added either to the organosilicone or during the preparation of the alkoxysilane from its respective reactants.
摘要:
Coupling agent and primer compositions comprising a conventional silane coupling agent (I), and a disilyl crosslinker compound (II) of the general formula(RO).sub.3 SiR'Si(OR).sub.3where RO denotes a hydrolyzable group, R' denotes a divalent organic radical, and the weight ratio of (I) to (II) is between 1:99 and 99:1 inclusive.
摘要:
This invention provides novel silanes and bis-silylhydrocarbons that contain a plurality of silicon-bonded alkoxy groups and at least one substituent that is bonded to silicon through oxygen and contains at least four carbon atoms, two of which form a terminal group of the formula CH.sub.2 .dbd.CH--. A preferred class of these compounds will cohesively bond polyorganosiloxane elastomers and resins to both organic and inorganic substrates.
摘要:
New granular detergent compositions suitable for heavy duty laundry and automatic dishwashing applications are disclosed. The detergents contain organic surfactant combined with a siliconate-silicate product that provides the compositions with improved dissolution characteristics in water. The siliconate-silicate component contains silicate units and anionic functional organosiliconate units represented by the formula (MO).sub.a O.sub.(3-a)/2 Si--R--Y.sub.b wherein Y represents the anionic functional group, R is an organic linking group, b is an integer from 1 to 3, a has a value of from 0.5 to 2, and M is hydrogen or alkali metal.
摘要:
What is disclosed is the preparation of novel silanes, their reaction products on various substrates and the use of the treated substrates to extract metal ions from solution. An example of such a novel compound is ##STR1##