受験番号：26IPC006[Claim 2]
Therareearth-transition

metalalloy

sputteringtargetaccording to claim 1,wherein when the void area ratio in the cross-sectional tissue
is measured at a plurality of positions on a surface, the variation in
the void area ratio as defined by (Smax - Smin)/(Smax + Smin) is 0.4
or less, where Smax is the maximum void area ratio and Smin is the minimum
void area ratio.

BACKGROUND ART

Charcoal bricks made from beer lees are carbides produced bydrying beer lees by dehydration; heat-compressing the dried beer lees
into a molded product having an appropriate shape such as a bar; andfiring the molded product at an appropriate temperature (usually, 500°Cor higher). In particular, when the molded product is fired at a hightemperature (600°C or higher), it is possible to obtain a hard whitecharcoal that is as hard and refined as Bincho charcoal and that produces
less powder. In addition, the charcoal brick made from beer lees hasa higher ash content (particularly, P and Mg) and a higher nitrogencontent as compared to ordinary charcoal, and is suitable for use asa soil improving material or the like. Yet, immersion of the charcoal
brick made from beer lees in water will cause dissolution of thephosphorus which is present in an amount of about 2% by weight, highly
likelyinfringing

Environment Agency.

theeutrophication

criteria

specifiedbytheThus, prevention of phosphorus dissolution isnecessary for use as a water purification material.

The disintegrant composition of the present invention is acomposition for use as a modifier (also referred to as a disintegrator)that improves disintegratability of chemicals (e.g., tablets), such asoral disintegrating tablets and pesticide granular, that disintegrate

by absorbing water to release active ingredients. Oral disintegratingtablets undergo disintegration in the oral cavity when low molecularweight sugars (such as D-mannitol) serving as biding agents ofdisintegrating tablets are dissolved in water in the oral cavity,reducing the binding capacity. A sugar (B) as one ingredient of thedisintegrantcompositionofthepresentinventionisahighlyhydrophilic composition, and thus functions as a water conducting agent
that increases the absorption rate of water into the disintegrantcomposition.

The water taken inside by the effect of the sugar (B)quickly swells a water-swelling polymer (A) as another ingredient of
the disintegrant composition of the present invention.

Pressure

generated by volume expansion upon swelling disintegrates the oral
disintegratingtablets.

Thisispresumably

howexcellent

disintegratability is exhibited.

(Example 1) Synthesis of polymer containing compound 1 as chain transfer
agent
Into a polymerization tube were placed the compound 1 purified
in Synthesis Example I (125.5 mg (weighed to obtain a final concentrationof the compound 1 of 0.5 M since this is a sample mixed with a trace
amountofAIBN)),tBA(218.4mg,1.5M),

and2,2'-azobis(isobutyronitrile) (AIBN) as an initiator (13.14 mg (weighted to obtaina final amount corresponding to 0.16 equivalents of the compound 1,
taking into account the amount of AIBN present as impurities in thecompound 1)). These components were dissolved in methanol to obtaina total amount of 1 mL.

This mixture was subjected to a cycle of freezing,degassing, and fusing three times to bring the polymerization tube tovacuum, and the polymerization tube was sealed. The polymerization tube
was placed in an oil bath at 70°C to perform polymerization reaction
for six hours. Thus, a polymer was obtained. The obtained polymer wassubjected to electrospray ionization mass analysis (ESI-MS). Fig. 14
shows the results.

The polymer was also subjected to separationaccording to the number of monomers using an automatic flash column
purification device (Isolera One ISO-1SW available from Biotage JapanLtd.

Note: tBA denotes tert-butyl acrylate.