A method for preparing partially acylated carbohydrate derivatives, particularly saccharose acetate, by reacting the initial carbohydrate with an acylating agent, wherein the method is carried out in a reaction medium consisting of an organic phase and an aqueous phase. Selecting the organic phase allows the average degree of substitution of the desired partially acylated carbohydrate derivative t...

This process consists in reacting a cationic starch with hydrogen peroxide and hydrobromic acid or bromine, in aqueous solution, so as to oxidise selectively the hemiacetal groups of the cationic starch and optionally the hemiacetal groups of its products of acidic hydrolysis, to carboxylic groups. The carboxylic and cationic amphoteric starch thus obtained is characterised in that its carboxylic ...

FL/6- 19032/A Process for the Preparation of nucleosides of the disclosure A process for the preparation of natural or synthetic nucleosides, nucleoside analogs or oligonucleotides from at least two such nucleosides and/or nueleoside analogs whose basic molecule contains an unsubstituted or substituted radical of a nucleic base B and a protected hydroxyl group of formula R1-O-, wherein R1 is a pro...

This process consists in reacting a cationic starch with hydrogen peroxide and hydrobromic acid or bromine, in aqueous solution, so as to oxidise selectively the hemiacetal groups of the cationic starch and optionally the hemiacetal groups of its products of acidic hydrolysis, to carboxylic groups. The carboxylic and cationic amphoteric starch thus obtained is characterised in that its carboxylic ...

PURPOSE:To inexpensively and strongly bond an accessory part with high accuracy by a reduced number of required processes by molding the accessory part of a car interior material by the same mold to simultaneously bond the same to the car interior material in the production of the car interior material by the thermal compression molding of phenol resin-impregnated felt. CONSTITUTION:A main mold ho...

PURPOSE:To seal positively readily the tip end of a member having a tip end face without damaging functions thereof even in the case that the member has functions. CONSTITUTION:The heat block 6 is heated which has a recession slightly larger than the tip end to be inserted, and in the recession, a convex heat insulating spacer 3 is inserted in the form of permitting the convex to be faced outward....

PURPOSE:To provide a method of repairing the coating-damaged part of a designable anti-corrosion coated steel material having a synthetic resin layer wherein patterns are printed on a polyethylene anticorrosion layer. CONSTITUTION:Repair is conducted by permitting patterns to continue by heat- bonding a repairing sheet 8 embracing a pattern-printed synthetic resin layer via the modified polyolefin...

PURPOSE:To prevent the generation of flashes and cracks in a resin part in the vulcanization-bonding between a rubber part and a resin part by forming a small rib on the bonding interface between the two parts. CONSTITUTION:Unvulcanized rubber is placed on a bonding part 13 coated with an adhesive. The rubber, after being covered with a mold 2, is vulcanized by compression-heating to prepare a rub...

PURPOSE: To improve light resistance, aspects of the surface, and formability of a composite material by including two layers of elastomer, in which one layer contains silicon type rubber and the other layer ethylene-propylene type copolymer and/or terpolymer rubber. CONSTITUTION: A first layer of this composite material including at least two elastomer layers is constituted of a first composition...

PURPOSE:To obtain a composite sheet excellent in slidability, adhesiveness, sound-insulating properties, shock absorbing properties, cushioning properties and heat insulating properties and also excellent in the adhesiveness to an adherend. CONSTITUTION:An ultrahigh mol.wt. polyethylene composite sheet consists of a sheet (A) with a thickness of 0.2mm or more composed of ultrahigh mol.wt. polyethy...

PURPOSE:To provide a surface decorating method which improves the adhesion of an adhesive to a polyolefin resin molding so that the adhesive gives an increased adhesiveness where fiber or skinning material is flocked or stuck onto the surface of the molding. CONSTITUTION:The title method comprises heating the surface of a polyolefin resin molding in advance at a temperature not lower than 45 deg.C...

PURPOSE: To ensure proper engagement of a plug to be fixed by means of a hot melt adhesive into a punched opening of a plate by making the snap- fastener blade of the plug so flexible that it can absorb dimensional error of conventional degree of the opening. CONSTITUTION: A plug 1 comprising a molded plastic material body 2 with a flange 4 and a bead 3 of a hot melt adhesive deposited onto a peri...

Device with which it is possible to test perfumes, as well as the olfactory ability of individuals. The invention relates to a methodical and effective device allowing an individual to measure and grade his olfactory ability in the perception and recognition of various perfumes in general, and the primary aromas given off by food and drink. It consists of a frame comprising an automaton, an air co...

The subject of the invention is a tube head (1) having a barrier-effect inner coating (7), characterised in that this coating (7) consists of a multilayer polymeric element secured by an outer superficial layer (9) of the said element to the annular plastic covering (8) of the head (1), the said element (7) comprising moreover one or more polymeric barrier-effect layers (11) having a total thickne...

PURPOSE:To provide a more appropriate service to a passenger by detecting automatically a degree of car sickness. CONSTITUTION:A piezoelectric element embedded in a seat detects a pressure variation on the contact face of a passenger and the seat, and a heart beat detecting device 2 calculates the number of heart beats of the passenger from a heart beat component contained in a signal from the pie...

PURPOSE:To improve the workability of a troublesome process of removing the connection-scheduled parts of a fluid conduit in an annular manner so as to maintain the temporary joining of a branch joint when the branch joint is connected to the external circumferential surface of a plastic pipe which is internally inserted onto the internal surface of the fluid conduit. CONSTITUTION:A first through ...

A disposable, absorbent pants-type diaper includes a front-part (1), a back-part (2), a crotch-part (3) between the front and back parts (1, 2), at least two side-closure parts (12, 13) which mutually join parts of the side-edges (4, 5) of respective front and back parts, so that the pants will present a waist opening (9) and two leg openings (10, 11). The diaper pants further include an elongated...

PURPOSE: To provide an absorptive product capable of more effectively absorbing a liquid drained repeatedly and holding it. CONSTITUTION: A disposable diaper 10 has a specified width and a specified length and also a rear sheet layer 30 including a front waist band part 12 and a rear waist band part 14 and an intermediate part binding both the front and rear waist bond parts together. In addition,...

PURPOSE: To improve liquid absorptive properties by forming an absorber sheet used for an absorber product such as physiological napkin, diaper or bandage, of a loosely fibrous cellulose pulp board containing a releasing agent and a crosslinked cellulose fiber. CONSTITUTION: For the improvement of the resilience and pliability of an absorber sheet, it is formed of loosely fibrous cellulose pulp bo...

PURPOSE:To make it possible to effect vulcanization of a tire in a mold for molding by providing a seat for each part of a gas vulcanization unit on the cylindrical inner surface of the mold and disposing a thrust means on one of the parts to urge the mold and an external heating means against the other one of the parts. CONSTITUTION:A main body of a device includes an annular mold 3 which is adap...