Abstract:
Disclosed herein are asphalt compositions. In some embodiments, the asphalt compositions can include asphalt, a polymer, and a basic salt such as aluminum sulfate. In some embodiments, the asphalt compositions can include asphalt, a polymer, and an inorganic acid such as phosphoric acid. The asphalt compositions can include asphalt in an amount of from 50 wt % to 99.9 wt %, based on the weight of the asphalt composition. In some embodiments, the asphalt compositions can include a styrene-butadiene copolymer in an amount of from 0.05 wt % to 10 wt %, based on the weight of the asphalt composition. The basic salt can be present in an amount of from 0.01 wt % to 5 wt %, based on the weight of the asphalt compositions. The acid can be present in an amount of from 0.005 wt % to 0.1 wt %, based on the weight of the asphalt compositions. Methods of making and using the asphalt compositions are also disclosed.
Abstract:
The present disclosure relates to compositions comprising a copolymer derived from polymerizing a hydrophobic monomer and/or a gas-phase monomer in the presence of a solid grade oligomer. In some embodiments, the hydrophobic monomer includes styrene and butadiene. In some embodiments, the copolymer is derived from polymerizing a gas-phase monomer. The present disclosure also relates to methods of making the disclosed compositions. The compositions disclosed herein can be used in a variety of applications including, but not limited to, asphalt compositions, paints, coatings, paper binding and coating compositions, foams, or adhesives.
Abstract:
Disclosed herein are asphalt compositions containing a block-copolymer additive, for example for use as a dispersant. In some embodiments, the asphalt compositions can include asphalt, a block-copolymer dispersant, and an SBR latex. The block-copolymers have a molecular weight exceeding 5000 g/mol with a polybutyl acrylate hydrophobic block that attaches to the asphalt particle and a sodium polystyrene sulfonate hydrophilic block for stability, wherein the block copolymer has a first block comprising of alkyl acrylate and a second block comprising units of an ethylenically unsaturated monomer with sulfonic acid groups. The asphalt compositions can include asphalt in an amount of from 50 wt. % to 95 wt. %, based on the weight of the asphalt composition. In some embodiments, the asphalt compositions can include a styrene-butadiene copolymer in an amount of from 0.05 wt. % to 10 wt. %, based on the weight of the asphalt composition. Methods of making and using the asphalt compositions are also disclosed.
Abstract:
Disclosed herein are latex compositions and asphalt formulations comprising the latex compositions. In some embodiments, the latex compositions include a styrene-butadiene copolymer and polyphosphoric acid represented by the formula, Hn+2PnO3n+1, wherein n is an integer from 2 to 30. The latex composition can be used to prepare polymer-modified asphalt emulsions and hot mix asphalt compositions. The asphalt formulations can be prepared by contacting asphalt with a latex composition as described herein and a sulfur curing agent. Methods of coating a surface comprising applying an asphalt formulation as described herein to the surface are also disclosed.
Abstract:
The present disclosure relates to compositions comprising a copolymer derived from a vinyl aromatic monomer, a (meth)acrylate monomer, an acid monomer, and a copolymerizable surfactant and compositions comprising the same. The (meth)acrylate monomer can be selected from a monomer having a theoretical glass transition temperature (Tg) for its corresponding homopolymer of 0° C. or less or a hydrophobic (meth)acrylate monomer. In some embodiments, the copolymer is further derived from an organosilane. The copolymers can have a theoretical glass transition temperature (Tg) from −60° C. to 80° C. and a number average particle size of 250 nm or less. The compositions can be used to prepare compositions such as coatings that have improved water resistance, blush resistance, and/or resistance to hydrostatic pressures. Methods of making the copolymers are also provided.
Abstract:
Provided herein are dispersible copolymer powders and asphalt compositions comprising the same. The dispersible copolymer powders comprise a core polymer having a glass transition temperature (Tg) of 40° C. or less and a shell comprising a water soluble protective colloid polymer having a Tg of 50° C. or greater. The core polymer can be derived from a vinyl aromatic monomer, a 1,3-diene monomer, and optionally one or more ethylenically-unsaturated monomers. The protective colloid polymer can be selected from a polyvinyl alcohol, a polyvinyl pyrrolidone, a polysaccharide, other water soluble polymers, or a combination thereof. Methods of preparing a styrene-butadiene modified asphalt without significantly increasing the viscosity, comprising adding the dispersible copolymer powder to an asphalt composition, wherein the addition of the copolymer polymer increases the viscosity of the asphalt by 100% or less at 135° C. within 2 hours of mixing are also described herein.
Abstract:
Described herein are methods of making a composition, the method comprising polymerizing monomers comprising a hydrophobic monomer in the presence of a solid grade oligomer, thereby forming a (co)polymer derived from the hydrophobic monomer, wherein the (co)polymer is derived from 5% by weight to 100% by weight of the hydrophobic monomer based on the total monomer weight. The hydrophobic monomer has a solubility in water of 0.2 g/100 g or less as measured at 20° C. The hydrophobic monomer comprises a substituted or unsubstituted C10-C22 alkyl (meth)acrylate, a substituted or unsubstituted C8-C20 alkenyl (meth)acrylate, a substituted or unsubstituted C5-C12 cycloalkyl (meth)acrylate, or a combination thereof. In some examples, the hydrophobic monomer can comprise lauryl (meth)acrylate, stearyl (meth)acrylate, heptadecyl (meth)acrylate, linoleyl (meth)acrylate, behenyl acrylate, cyclohexyl (meth)acrylate, isodecyl (meth)acrylate), nonyl (meth)acrylate, tridecyl (meth)acrylate, pentadecyl (meth)acrylate, 3-methylbut-2-enyl methacrylate, 3,7-dimethylocta-2,6-dienyl (meth)acrylate, or a combination thereof.
Abstract:
The present disclosure relates to compositions comprising a copolymer derived from a vinyl aromatic monomer, a (meth)acrylate monomer, an acid monomer, and a copolymerizable surfactant and compositions comprising the same. The (meth)acrylate monomer can be selected from a monomer having a theoretical glass transition temperature (Tg) for its corresponding homopolymer of 0° C. or less or a hydrophobic (meth)acrylate monomer. In some embodiments, the copolymer is further derived from an organosilane. The copolymers can have a theoretical glass transition temperature (Tg) from −60° C. to 80° C. and a number average particle size of 250 nm or less. The compositions can be used to prepare compositions such as coatings that have improved water resistance, blush resistance, and/or resistance to hydrostatic pressures. Methods of making the copolymers are also provided.
Abstract:
Disclosed herein are elastomeric roof coatings containing a block-copolymer, for example for use as a dispersant. In some embodiments, the roof coating compositions can comprise an all-acrylic or styrene-acrylic latex comprising a block-copolymer used in the latex polymerization. The block-copolymers have a molecular weight exceeding 5000 g/mol wherein the block copolymer has a first block comprising of alkyl acrylate and a second block comprising units of an ethylenically unsaturated monomer with sulfonic acid groups. The modified elastomeric roof coating compositions are advantageous for reasons of water resistance, wet adhesion, tensile strength, and elongation. Methods of making and using the elastomeric roof coating compositions are also disclosed.
Abstract:
Carpet binder compositions comprising a mineral filler and a copolymer produced by emulsion polymerization and derived from monomers comprising a vinyl aromatic monomer, a 1,3-diene monomer, and an additional monomer selected from a copolymerizable surfactant, a (meth)acrylate monomer, a carboxylic acid monomer, or a combination thereof are disclosed. The carpet binder compositions can be formulated with a non-polymerizable surfactant such as an aryl phosphate surfactant. The compositions exhibit superior wet and dry delamination strengths as well as suitable froth viscosities. As a result, such carpet binder compositions can be made at higher filler loadings.