Abstract:
Disclosed is an asphalt composition to which a water soluble prepolymer which is resinified while the reaction proceeds gradually in the aqueous solution is added, wherein the strength of the asphalt composition is notably improved. Further, the resinification speed can freely be controlled by the action of a resinification accelerator. Accordingly, the additive for the emulsified asphalt and the asphalt composition for blending at cold temperatures can be applied effectively to various applications such as road pavement, railroad, waterproof agents, and adhesives.
Abstract:
Disclosed is a multiplex ethylene coplymer comprising (a) 50 to 94.8 mole % of units derived from ethylene, which are represented by the following formula (I):--CH.sub.2 --CH.sub.2 -- (I)(b) 5 to 45 mole % of units derived from a monomer selected from alkyl acrylates, alkyl methacrylates, vinyl carboxylates and isopropenyl carboxylates, which are represented by the following formula (II): ##STR1## wherein R.sub.1 stands for a hydrogen atom or a methyl group, and X is ##STR2## in which R.sub.2 and R.sub.3 stand for an alkyl group having 1 to 10 carbon atoms), and (c) 0.2 to 5 mole % of units derived from a monomer having a radical-polymerizable ethylenic double bond and at least one carbon-to-carbon double bond which is different from a double bond of an aromatic nucleus. This ethylene copolymer can be easily cured, and the cured copolymer is a rubber having excellent oil resistance and heat resistance.This multiplex ethylene copolymer can be obtained by copolymerizing a monomer forming the units (a) with a monomer forming the units (b) and (c') a monomer having a radical-polymerizable ethylenic double bond and an acid anhydride group, a carboxyl group and/or an epoxy group, and modifying the obtained copolymer with a low-molecular-weight modifier selected from unsaturated amines and unsaturated alcohols having at least one carbon-to-carbon double bond different from a double bond of an aromatic nucleus (when a radical-polymerizable monomer having an epoxy group is used, the low-molecular-weight modifier may be an unsaturated carboxylic acid having at least one carbon-to-carbon double bond different from a double bond of an aromatic nucleus).
Abstract:
Binder compositions for a mold each comprising a specific alkaline phenol-aldehyde resin are disclosed. Methods for producing a mold using any of the binder compositions are also disclosed.
Abstract:
A binder resin composition, a curing agent composition, a caking additive composition, a kit, a casting mold composition and a process for manufacturing a casting mold are disclosed, wherein a metallic compound containing a metallic element belonging to Group IB to VIII of the Periodic Table is utilized. The compositions are useful for the production of a sand mold for casting, having an excellent strength, from reclaimed sand, in a self-hardening or gas hardening mold process. The casting mold according to the present invention, which is manufactured in the presence of a metallic compound containing a metallic element belonging to Group IB to VIII of the Perioidic Table has excellent strength.
Abstract:
A gasoline composition comprising (a) gasoline, (b) a deposit inhibitor or a detergent containing a basic nitrogen atom, (c) a carrier oil, and (d) one or more compounds selected from the group consisting of an ester of a fatty acid and an alkylene oxide addition compound to bisphenol, a compound obtained by the ester exchange reaction of an alcohol and a triglyceride-type fat or oil, an aliphatic or aromatic carboxylic acid, a metal salt of an aliphatic or aromatic carboxylic acid, an ester of an aliphatic or aromatic carboxylic acid and an alcohol, and an ester of boric acid. The composition has superior heat resistance and is excellent in removing deposits in the fuel intake systems and in keeping the systems clean.
Abstract:
When a screw 60 has been adjusted, a printing pressure adjusting disc 72 is turned through a shaft 75 and a segment gear 73 to adjust an eccentric pin through a link 78 and a lever 79. Also when the amount of eccentricity of a rubber cylinder 53 has been changed as a result of the adjustment of the stopper screw 60, the eccentric pin of each plate cylinder also is simultaneously adjusted in accordance with the amount of adjustment of the screw 60, and further the amount of eccentricity of the plate cylinder is changed to such a state that a printing pressure is kept constant in relation to the rubber cylinder 53, thus enabling the printing pressure adjustment with little labor and time to thereby improve printing operation performance.
Abstract:
An asphalt emulsion comprising water, asphalt, (A) an emulsifier selected from the group consisting of specific aliphatic amines, aminated lignins, imidazolines having a hydrocarbon group having 7 or more carbon atoms, and amidobetaines having a hydrocarbon group having 7 or more carbon atoms, (B) a polyphenolic compound, and (C) at least one member selected from the group consisting of anionic polumeric dispersants, hydroxycarboxylic acids and/or (D) at least one member selected from the group consisting of saccharides, sugar alcohols and polyhydric alcohols, which is excellent in storage stanility, mixability with aggregate and low foaming properties of the emulsion itself, in adherence of the products of breaking thereof to aggregate, and in stripping resistance of the construction executed by the use of the emulsion.
Abstract:
A printing press having a horizontally stationary printing head and at least one horizontally moveable inking unit is provided with a safety system that disables the main motor drive to the printing head prior to retraction of the or each inking unit, and which inhibits movement of the inking unit in the retract direction in the presence of an operator or tools positioned behind the inking unit, while permitting movement of the inking unit in an advanced direction in the absence of an operator and tools positioned between the retracted inking unit and the printing head.