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1. (WO2007011045) PURGING AGENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/011045 International Application No.: PCT/JP2006/314539
Publication Date: 25.01.2007 International Filing Date: 18.07.2006
IPC:
B29C 33/72 (2006.01) ,C08K 3/38 (2006.01) ,C08K 5/04 (2006.01) ,C08L 29/04 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33
Moulds or cores; Details thereof or accessories therefor
70
Maintenance
72
Cleaning
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
K
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
3
Use of inorganic ingredients
38
Boron-containing compounds
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
K
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
5
Use of organic ingredients
04
Oxygen-containing compounds
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
29
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
02
Homopolymers or copolymers of unsaturated alcohols
04
Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
Applicants:
株式会社クラレ Kuraray Co., Ltd. [JP/JP]; 〒7108622 岡山県倉敷市酒津1621番地 Okayama 1621, Sakazu, Kurashiki-shi, Okayama 7108622, JP (AllExceptUS)
片岡 直樹 KATAOKA, Naoki [JP/JP]; JP (UsOnly)
新留 裕之 SHINDOME, Hiroyuki [JP/JP]; JP (UsOnly)
渡邊 知行 WATANABE, Tomoyuki [JP/JP]; JP (UsOnly)
Inventors:
片岡 直樹 KATAOKA, Naoki; JP
新留 裕之 SHINDOME, Hiroyuki; JP
渡邊 知行 WATANABE, Tomoyuki; JP
Agent:
南條 博道 NANJO, Hiromichi; 〒5300047 大阪府大阪市北区西天満3丁目2番9号 翁ビル5階 Osaka 5th Floor, Okina Bldg. 2-9, Nishitenma 3-chome Kita-ku Osaka-shi Osaka 530-0047, JP
Priority Data:
2005-21016320.07.2005JP
Title (EN) PURGING AGENT
(FR) AGENT DE PURGE
(JA) パージング剤
Abstract:
(EN) Disclosed is a purging agent used for resin molding apparatuses. The purging agent comprises an ethylene-vinyl alcohol copolymer, an alkaline earth metal salt and a boron compound. The purging agent contains 8-80 μmol of the alkaline earth metal salt and 8-80 μmol of the boron compound per 1 g of the ethylene-vinyl alcohol copolymer. The limiting viscosity [&eegr;] of the ethylene-vinyl alcohol copolymer contained in this purging agent is not more than 0.120 L/g, and the melt viscosity index MI of the purging agent at 190˚C is not more than 0.70 g/10 min. By using such a purging agent, resin residues remaining in a resin channel in a molding apparatus can be easily removed. In addition, the purging agent can be discharged in a short time when operation of the molding apparatus is resumed.
(FR) L’invention concerne un agent de purge utilisé pour des appareils de moulage de résine. L'agent de purge comprend un copolymère d'éthylène-alcool vinylique, un sel d'un métal alcalinoterreux et un composé du bore. L'agent de purge contient 8-80 µmol du sel de métal alcalinoterreux et 8-80 µmol du composé du bore pour 1 g du copolymère d'éthylène-alcool vinylique. La viscosité limite [&eegr;] du copolymère d'éthylène-alcool vinylique contenu dans cet agent de purge n'est pas supérieure à 0,120 l/g et l'indice de fluage à l'état fondu MI de l'agent de purge à 190°C n'est pas supérieur à 0,70 g/10 min. En utilisant un tel agent de purge, on peut facilement enlever les résidus de résine restant dans un canal de résine d'un appareil de moulage. En plus, on peut faire sortir l'agent de purge sur une courte durée lorsqu'on recommence à utiliser l'appareil de moulage.
(JA) 本発明は、樹脂成形装置に用いられるパージング剤に関する。このパージング剤は、エチレン−ビニルアルコール共重合体、アルカリ土類金属塩、およびホウ素化合物を含有し、該エチレン−ビニルアルコール共重合体1gに対して、アルカリ土類金属塩が8~80μmol、そして該ホウ素化合物が8~80μmolの割合で含有される。このパージング剤に含まれるエチレン−ビニルアルコール共重合体の極限粘度[η]は0.120L/g以下であり、そして該パージング剤の190℃における溶融粘度指数MIは0.70g/10min以下である。本発明のパージング剤を用いると、成形装置の樹脂流路に存在する樹脂残留物の除去が容易であり、かつ成形装置の運転を再開するときに、該パージング剤を短時間で排出させることが可能である。
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)