摘要:
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° C. or greater and then is vulcanized. The obtained styrene-based copolymer is used in asphalt-based systems.
摘要:
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.
摘要:
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.
摘要:
Asphalt emulsions comprising asphalt present in an amount of 50% by weight or greater, based on the weight of the asphalt emulsion, an isocyanate present in an amount of 0.05% by weight or greater, based on the weight of the asphalt emulsion, and water. The isocyanate is derived from an aromatic, a cycloaliphatic, or an aliphatic isocyanate, or a mixture thereof. Preferably, the isocyanate includes methylene diphenyl diisocyanate. The asphalt emulsion can comprise one or more polyols. Methods of making the asphalt emulsions are also described.
摘要:
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.
摘要:
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° C. or greater and then is vulcanized. The obtained styrene-based copolymer is used in asphalt-based systems.
摘要:
A high speed, high volume fruit sectionizer is comprised of a pair of suction cup conveyors onto which fruit is loaded. The fruit is coupled by means of suction attachment to a first conveyor and carried to a position wherein the opposing side of the fruit is suction coupled to the second conveyor. The fruit is drawn through a halving guillotine and coring blade. The fruit halves are then positioned on scooping and sectioning assemblies. A rotating semicircular hoop blade cuts the fruit meat away from the peel while leaving the fruit meat and peel in place. The separated peel and fruit meat are moved across the scooping and sectioning assembly through a blade assembly which sections the fruit meat. The meat sectioning blade has a first portion which cuts through the peel and fruit meat to establish a first radial extent of the section cut. A following portion of the same blade is provided with a dull edge which completes the section cut of the fruit meat, but is not sharp enough to cut the peel or to cut any portion of the conveyor. The conveyor retains uninterrupted suction attachment with the partially sliced fruit peel and is undamaged by the suctioning blade(s). The fruit meat sections then fall away from the peel, which latter is moved by the conveyor to a disposal position.
摘要:
A high speed, high volume fruit sectionizer is comprised of a pair of suction cup conveyors onto which fruit is loaded. The fruit is coupled by means of suction attachment to a first conveyor and carried to a position wherein the opposing side of the fruit is suction coupled to the second conveyor. The fruit is drawn through a halving guillotine and coring blade. The fruit halves are then positioned on scooping and sectioning assemblies. A rotating semicircular hoop blade cuts the fruit meat away from the peel while leaving the fruit meat and peel in place. The separated peel and fruit meat are moved across the scooping and sectioning assembly through a blade assembly which sections the fruit meat. The meat sectioning blade has a first portion which cuts through the peel and fruit meat to establish a first radial extent of the section cut. A following portion of the same blade is provided with a dull edge which completes the section cut of the fruit meat, but is not sharp enough to cut the peel or to cut any portion of the conveyor. The conveyor retains uninterrupted suction attachment with the partially sliced fruit peel and is undamaged by the suctioning blade(s). The fruit meat sections then fall away from the peel, which latter is moved by the conveyor to a disposal position.
摘要:
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.
摘要:
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.