Basf Se Corporation

Other

William J Kirk

Kostas S Avramidis

Koichi Takamura

Armin Burghart

Richard A Lynch

Stanley O Thompson

John G Mathews

Arlis Kadrmas

Lawrence J Dario

James T Andrews

William Lockett, Iii

Robert A D'Antuono

Kimberly L Walden

Arlis A Kadrmas

Provided herein are asphalt compositions comprising asphalt, a carboxylated copolymer, a polyalkyleneimine, and a photoinitiator. The carboxylated copolymer present in the asphalt compositions can be a latex composition derived from a carboxylated styrene-butadiene copolymer. The carboxylated copolymer includes from 0.5% to 25% by weight carboxylic acid monomers. The carboxylated styrene-butadiene polymer and the asphalt can be present in a weight ratio of from 1:99 to 1:10. The polyalkyleneimine present in the asphalt compositions can be in an amount of greater than 0% to up to 10% by weight of the asphalt composition. The photoinitiator can include benzophenone and/or a derivative thereof. Tack coats meeting ASTM-D-977 standard comprising the asphalt compositions disclosed herein are also provided. The tack coat can have a tack-free time of 10 minutes or less. Methods of producing the asphalt compositions and tack coats are also disclosed.

Asphalt composition and method of using same in tack coats

A non-carboxylated styrene-butadiene copolymer, preparation method and use thereof are provided. The non-carboxylated styrene-butadiene copolymer is prepared by hot polymerization in the absence of acid monomers and is used in asphalt-based systems such as asphalt emulsions.

Non-carboxylated styrene-butadiene copolymers, preparation method and use thereof

Styrene-based copolymers having acid monomer units, dispersions, preparation method and use thereof are provided. The styrene-based copolymer is prepared by polymerizing styrene, one or more acid monomers, and optionally butadiene at a temperature of 40&#xb0; C. or greater and then is vulcanized. The obtained styrene-based copolymer is used in asphalt-based systems.

Styrene-based copolymers having acid monomer units and dispersions thereof

The invention is a method of treating, restoring or sealing a surface comprising applying an emulsion comprising a latex polymer, a cationic emulsifier, and optionally a recycling agent to the surface to wet the surface and depositing a surface treatment layer on the surface, wherein the depositing step occurs while the surface is wetted. The invention also includes a surface pretreatment composition comprising water, at least one acrylic latex polymer, an aromatic recycling agent, and at least one cationic emulsifier. Furthermore, the invention includes the surface resulting from the application of the emulsion used in the invention and concentrated emulsions for use with the surface treatment composition.

Method and composition for enhancing the performance of an emulsion-based surface treatment

An assembly for supporting children in various normal sitting and reclining positions in which separately movable seat, leg and back supporting sections are provided and wherein the leg and back sections are pivotally movable in unison with respect to the seat section such that the possibility of careless positioning of the supported child or infant is reduced.

Child's seating device

A safety device for use with standard or dental syringes as an add-on feature or as a retrofit in which a safety sleeve moves over the normally exposed front end of a needle to protect users from being accidentally stuck.

Protection device for syringe needles

An apparatus for destroying used hypodermic needles includes a rotating electrode wheel, a stationary electrode element which is positioned in closely spaced relation to the electrode wheel and a guide member for guiding a hypodermic needle inserted into the apparatus so that it is advanced into electrical contact with the electrode wheel and the electrode element in order to electrically destroy the needle. The apparatus further includes a sensor for automatically energizing the electrode wheel and the electrode element when an operator approaches the apparatus, and a disposable cartridge assembly for receiving and containing debris generated as needles are destroyed in the apparatus.

Growing community of inventors

York, SC, United States of America

William J Kirk