摘要:
Disclosed herein are inert monovalent hydrocarbon terminated polysulfide copolymers having the general structure ##STR1## wherein n is an integer from about 2 to about 8, l is zero or a positive integer, m is a positive integer, each R is independently an organic polyradical with the radicals residing on carbon atoms, p is zero or a positive integer which is the difference between the number of radicals on R and 2, and each Y is a terminal substituent that is an inert monovalent hydrocarbon radical.
摘要:
A modified copolymer composition comprising a polymerizable olefin and an .alpha.,.beta.-ethylenically unsaturated carboxylic acid wherein at least a portion of the carboxyl groups have been converted to an ester/amide derivative by contact with a cyclic iminoether compound, e.g. 2-ethyl-2-oxazoline. A process for preparing the modified copolymer and a laminate structure where at least one of the plurality of layers is the modified copolymer.
摘要:
A process for inhibiting the staining of film-forming finishes applied to a tannin-containing wood substrate comprises applying to the wood substrate, prior to or concurrently with the surface film, an aqueous formulation containing a stain-inhibiting amount of magnesium hydroxide having a high surface area, thereby forming a leach-resistant magnesium hydroxide-tannin complex.
摘要:
Cement compositions having improved strength and enhanced adhesion to siliceous substrates are obtained by admixing Portland cement with a cement additive comprising (1) a styrene-butadiene interpolymeric latex containing up to about 60 parts by weight of interpolymer solids, said latex being present in an amount sufficient to provide from about 5 to about 25 parts by weight of latex polymer solids based on the weight of cement and (2) from about 0.05 to about 3 parts by weight of latex solids of a silane of the formula ZSi(OR').sub.3 wherein Z is a member selected from the group consisting of hydrocarbon groups and substituted hydrocarbon groups in which the substituent is bonded to the silicon atom through at least one carbon atom, and R' is selected from the group consisting of alkyl radicals of from 1 to 3 carbon atoms, --CH.sub.2 CH.sub.2 OR" and --CH.sub.2 CHOH where R" is an aliphatic hydrocarbon radical of 1 to 3 inclusive carbon atoms.
摘要:
Tannin migration through a latex paint applied to a tannin-containing wood surface is inhibited by applying to the wood surface a linear, partially deacylated poly(N-acyl)alkylenimine, such as poly(N-propionyl)ethylenimine. The poly(N-acyl)alkylenimine can be applied to the wood surface either prior to or concurrently with the latex paint.
摘要:
Tannin migration in tannin-containing wood substrates, such as redwood and cedar, is inhibited by treating said substrate with an aqueous solution of polyalkylenimine, such as polyethylenimine.
摘要:
Lacquers of crosslinkable polymers are prepared by an improved process wherein a monomer composition of an olefinically unsaturated carboxylic acid, a hydroxyalkyl acrylate and at least one other monomer from the group of alkenyl aromatic monomers, alkyl acrylates or mixtures thereof is dissolved in tetrachloroethylene or 1,1,1-trichloroethane or mixtures thereof and caused to polymerize.
摘要:
Filler particles useful for filling organic resins such as polyethylene are produced by mixing a filler, such as calcium carbonate, with a halogenated polar polymer such as a halogenated ethylene/acrylic acid copolymer. The fillers of the invention impart improved physical properties such as tensile, flexural and impact strength to organic resins.
摘要:
This invention deals with novel compositions of matter and a novel method for improving the transfer efficiency of solvent-based paints that are sprayed onto surfaces, wherein current practice normally results in significant loss of paint to the environment rather than deposition on the surface. Such novel compositions are ultra-high molecular weight acrylate polymers solubilized in a solvent-based acrylate paint.
摘要:
Epoxy resins contain a discontinuous phase dispersed therein, of grafted rubber particles having an insoluble rubber core and having a grafted shell containing a functionalized compound such as that provided by polymerized glycidyl methacrylate, which is reactive under curing conditions with a functionality of the epoxy resin phase. The dispersions are stable and are useful as curable coatings, and for providing toughened resins for structural applications.