JP7470207B2 - クロロプレン重合体組成物及びその製造方法、並びに、浸漬成形体 - Google Patents
クロロプレン重合体組成物及びその製造方法、並びに、浸漬成形体 Download PDFInfo
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- 238000005520 cutting process Methods 0.000 description 1
- 150000003946 cyclohexylamines Chemical class 0.000 description 1
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 1
- PGAXJQVAHDTGBB-UHFFFAOYSA-N dibutylcarbamothioylsulfanyl n,n-dibutylcarbamodithioate Chemical compound CCCCN(CCCC)C(=S)SSC(=S)N(CCCC)CCCC PGAXJQVAHDTGBB-UHFFFAOYSA-N 0.000 description 1
- 229940116901 diethyldithiocarbamate Drugs 0.000 description 1
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 description 1
- FVCOIAYSJZGECG-UHFFFAOYSA-N diethylhydroxylamine Chemical compound CCN(O)CC FVCOIAYSJZGECG-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- 229960002377 dixanthogen Drugs 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- WHDGWKAJBYRJJL-UHFFFAOYSA-K ferbam Chemical compound [Fe+3].CN(C)C([S-])=S.CN(C)C([S-])=S.CN(C)C([S-])=S WHDGWKAJBYRJJL-UHFFFAOYSA-K 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- ZWWQICJTBOCQLA-UHFFFAOYSA-N o-propan-2-yl (propan-2-yloxycarbothioyldisulfanyl)methanethioate Chemical compound CC(C)OC(=S)SSC(=S)OC(C)C ZWWQICJTBOCQLA-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- HSJXWMZKBLUOLQ-UHFFFAOYSA-M potassium;2-dodecylbenzenesulfonate Chemical compound [K+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HSJXWMZKBLUOLQ-UHFFFAOYSA-M 0.000 description 1
- GEVPMUPAXHXQQS-UHFFFAOYSA-N potassium;nitrate;tetrahydrate Chemical compound O.O.O.O.[K+].[O-][N+]([O-])=O GEVPMUPAXHXQQS-UHFFFAOYSA-N 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 235000003441 saturated fatty acids Nutrition 0.000 description 1
- 208000017520 skin disease Diseases 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- HUMLQUKVJARKRN-UHFFFAOYSA-M sodium;n,n-dibutylcarbamodithioate Chemical compound [Na+].CCCCN(C([S-])=S)CCCC HUMLQUKVJARKRN-UHFFFAOYSA-M 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BUUPQKDIAURBJP-UHFFFAOYSA-N sulfinic acid Chemical compound OS=O BUUPQKDIAURBJP-UHFFFAOYSA-N 0.000 description 1
- 238000010059 sulfur vulcanization Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 239000012989 trithiocarbonate Substances 0.000 description 1
- HIZCIEIDIFGZSS-UHFFFAOYSA-L trithiocarbonate Chemical compound [S-]C([S-])=S HIZCIEIDIFGZSS-UHFFFAOYSA-L 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 description 1
- PGNWIWKMXVDXHP-UHFFFAOYSA-L zinc;1,3-benzothiazole-2-thiolate Chemical compound [Zn+2].C1=CC=C2SC([S-])=NC2=C1.C1=CC=C2SC([S-])=NC2=C1 PGNWIWKMXVDXHP-UHFFFAOYSA-L 0.000 description 1
- NEYNBSGIXOOZGZ-UHFFFAOYSA-L zinc;butoxymethanedithioate Chemical compound [Zn+2].CCCCOC([S-])=S.CCCCOC([S-])=S NEYNBSGIXOOZGZ-UHFFFAOYSA-L 0.000 description 1
- KMNUDJAXRXUZQS-UHFFFAOYSA-L zinc;n-ethyl-n-phenylcarbamodithioate Chemical compound [Zn+2].CCN(C([S-])=S)C1=CC=CC=C1.CCN(C([S-])=S)C1=CC=CC=C1 KMNUDJAXRXUZQS-UHFFFAOYSA-L 0.000 description 1
- SZNCKQHFYDCMLZ-UHFFFAOYSA-L zinc;propan-2-yloxymethanedithioate Chemical compound [Zn+2].CC(C)OC([S-])=S.CC(C)OC([S-])=S SZNCKQHFYDCMLZ-UHFFFAOYSA-L 0.000 description 1
- DUBNHZYBDBBJHD-UHFFFAOYSA-L ziram Chemical compound [Zn+2].CN(C)C([S-])=S.CN(C)C([S-])=S DUBNHZYBDBBJHD-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/003—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F36/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F36/04—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F36/14—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen
- C08F36/16—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen containing halogen
- C08F36/18—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen containing halogen containing chlorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
- C08L11/02—Latex
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2011/00—Use of rubber derived from chloroprene as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4842—Outerwear
- B29L2031/4864—Gloves
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
本実施形態に係るクロロプレン重合体組成物の製造方法は、ロジン酸及びロジン酸塩からなる群より選ばれる少なくとも一種のロジン酸成分の存在下においてクロロプレンを重合することにより、クロロプレン重合体を含有するクロロプレン重合体組成物を得る重合工程を備える。本実施形態に係るクロロプレン重合体組成物の製造方法では、ロジン酸成分において、デヒドロアビエチン酸、ピマール酸、イソピマール酸、ジヒドロアビエチン酸及びこれらの塩の合計量A1に対するアビエチン酸、ネオアビエチン酸、パラストリン酸、レボピマール酸及びこれらの塩の合計量B1の質量比B1/A1が0.10~3.00であり、重合工程において得られるクロロプレン重合体のトルエン不溶分が50質量%以上である。
本実施形態に係るクロロプレン重合体組成物を加硫することにより加硫物を得てよい。本実施形態に係る加硫物は、本実施形態に係るクロロプレン重合体組成物の加硫物であり、本実施形態に係るクロロプレン重合体組成物を加硫して得られたものである。本実施形態に係る加硫物の製造方法は、本実施形態に係るクロロプレン重合体組成物を加硫して加硫物を得る工程を含む。本実施形態に係る加硫物は、膜状であってよい。
内容積40Lの重合缶に、クロロプレン(単量体)85質量部、2,3-ジクロロ-1,3-ブタジエン(単量体)15質量部、n-ドデシルメルカプタン0.03質量部、純水90質量部、ロジン酸A(自社調製品)4.8質量部、水酸化カリウム1.50質量部、及び、β-ナフタレンスルホン酸ホルマリン縮合物のナトリウム塩(商品名「デモールN」、花王株式会社製)0.40質量部を添加した。重合開始前の水性乳化液のpHは12.9であった。重合開始剤として過硫酸カリウム0.1質量部を添加し、重合温度20℃にて窒素気流下で重合を行った。重合転化率83%となった時点で、重合禁止剤であるジエチルヒドロキシアミン0.01質量部を加えて重合を停止させることにより蒸留前のラテックスを得た。この蒸留前のラテックスを減圧蒸留して未反応の単量体を除去することにより、メルカプタン変性クロロプレン重合体を含有する蒸留後のラテックスA(固形分:55質量%)を得た。
上述のロジン酸A~Cにおける共役樹脂酸成分/非共役樹脂酸成分の質量比を測定した。まず、JIS K 6229で規定されるエタノール/トルエン共沸混合物(ETA溶液)にロジン酸を溶解させ塩酸処理を施すことにより溶液(ロジン酸:1.5質量%)を得た。この溶液を用いて下記条件でガスクロマトグラフィーを行った。
・ガスクロマトグラフ質量分析装置:商品名「JEOL Jms-Q1050GC」、日本電子株式会社製
・使用カラム:FFAP 0.32mmφ×25m(膜厚0.3μm)
・カラム温度:200℃→250℃
・昇温速度:10℃/min
・注入口温度:270℃
・注入量:1μL
・インターフェイス温度:270℃
・イオン源温度:270℃
・イオン化電流:50μA
・イオン化電圧:70eV
・検出器:FID
・検出器電圧:-1000V
・検出器電圧:EI法
・検出器温度:270℃
上述のクロロプレン重合体ラテックスを凍結乾燥させて得られるクロロプレン重合体の固形分3gを2mm角に裁断することにより試験片を得た。コンデンサー付属のナス型フラスコにこの試験片を入れた後、JIS K 6229で規定されるエタノール/トルエン共沸混合物(ETA溶液)で抽出し塩酸処理を施すことにより得られた抽出物を用いて、ロジン酸成分における共役樹脂酸成分/非共役樹脂酸成分の質量比の分析と同様の上述の条件でガスクロマトグラフィーを行い、クロロプレン重合体における共役樹脂酸成分/非共役樹脂酸成分の質量比B2/A2を算出した。結果を表1及び表2に示す。
上述のクロロプレン重合体ラテックスを凍結乾燥させて得られるクロロプレン重合体の固形分を裁断することにより0.05mgの試験片を得た。この試験片を用いて下記条件で熱分解ガスクロマトグラフィーを行うことにより、クロロプレン重合体における2,3-ジクロロ-1,3-ブタジエン共重合量(基準:クロロプレン重合体を構成する単量体単位の全量=クロロプレンの単量体単位及び2,3-ジクロロ-1,3-ブタジエンの単量体単位の合計量)を算出した。結果を表1及び表2に示す。
・熱分解ガスクロマトグラフィー装置:商品名「Agilent 5890」、アジレント・テクノロジー株式会社製
・使用カラム:DB-5 0.25mmφ×30m(膜厚1.0μm)
・カラム温度:50℃→10℃/min→120℃→25℃/min→300℃
・注入口温度:270℃
・試料量:0.05mg
・検出器:FID
・検出器温度:280℃
上述のクロロプレン重合体ラテックスを凍結乾燥させて得られるクロロプレン重合体1gを2mm角に裁断することにより試験片を得た。コニカルビーカーにこの試験片を入れた後、トルエンで試験片を16時間かけて溶解した。続いて、遠心分離を行った後、200メッシュ金網を用いてゲル分(不溶分)を分離した。その後、ゲル分を乾燥させた後に乾燥物の質量を測定することにより、クロロプレン重合体におけるトルエン不溶分を算出した。結果を表1及び表2に示す。
(実施例1~11及び比較例1~3)
陶器製ボールミルを用いて、酸化亜鉛(商品名「酸化亜鉛2種」、堺化学工業株式会社製)2質量部、p-クレゾールとジシクロペンタジエンとのブチル化反応生成物(商品名「ノクラックPBK」、大内新興化学工業株式会社製)2質量部、β-ナフタレンスルホン酸ホルマリン縮合物のナトリウム塩(商品名「デモールN」、花王株式会社製)0.1質量部、及び、水14質量部を20℃で16時間混合することにより水分散液Aを得た。
硫黄(S8。加硫剤)1質量部を更に用いると共に水の使用量を13質量部に変更したことを除き水分散液Aと同様に行うことにより水分散液Bを得た。上述のラテックスAの固形分100質量部にこの水分散液Bを7.1質量部混合した後、水を加えて固形分濃度を30質量%に調整することにより、硫黄(加硫剤)を含有するものの加硫促進剤を含有しないラテックス組成物IIを作製した。上述のラテックス組成物Iに代えてラテックス組成物IIを用いること以外はラテックス組成物Iと同様に行うことにより評価用フィルムを作製した。
硫黄(S8。加硫剤)1質量部及び加硫促進剤(ジ-n-ブチル-ジチオカルバミン酸亜鉛、商品名「ノクセラーBZ」、大内新興化学工業株式会社製)2質量部を更に用いると共に水の使用量を11質量部に変更したことを除き水分散液Aと同様に行うことにより水分散液Cを得た。上述のラテックスAの固形分100質量部にこの水分散液Cを7.1質量部混合した後、水を加えて固形分濃度を30質量%に調整することにより、硫黄(加硫剤)及び加硫促進剤を含有するラテックス組成物IIIを作製した。上述のラテックス組成物Iに代えてラテックス組成物IIIを用いること以外はラテックス組成物Iと同様に行うことにより評価用フィルムを作製した。
上述のラテックスLの固形分100質量部に上述の水分散液Cを7.1質量部混合した後、水を加えて固形分濃度を30質量%に調整することにより、硫黄(加硫剤)及び加硫促進剤を含有するラテックス組成物IVを作製した。上述のラテックス組成物Iに代えてラテックス組成物IVを用いること以外はラテックス組成物Iと同様に行うことにより評価用フィルムを作製した。
試験片測厚器(商品名「ASKER SDA-12」、高分子計器株式会社製)を用いて評価用フィルムの中央部の3か所の厚さ(フィルム厚)を測定し、最小の厚さを評価用フィルムの厚さとして得た。結果を表1及び表2に示す。
Claims (10)
- ロジン酸及びロジン酸塩からなる群より選ばれる少なくとも一種のロジン酸成分の存在下においてクロロプレンを重合することにより、クロロプレン重合体を含有するクロロプレン重合体組成物を得る重合工程を備え、
前記ロジン酸成分において、デヒドロアビエチン酸、ピマール酸、イソピマール酸、ジヒドロアビエチン酸及びこれらの塩の合計量A1に対するアビエチン酸、ネオアビエチン酸、パラストリン酸、レボピマール酸及びこれらの塩の合計量B1の質量比B1/A1が0.10~3.00であり、
前記クロロプレン重合体のトルエン不溶分が50質量%以上である、クロロプレン重合体組成物の製造方法。 - 前記重合工程においてクロロプレンと2,3-ジクロロ-1,3-ブタジエンとを重合する、請求項1に記載のクロロプレン重合体組成物の製造方法。
- 前記2,3-ジクロロ-1,3-ブタジエンの使用量が、前記クロロプレン重合体の重合に用いる単量体の全量を基準として0質量%を超え20質量%以下である、請求項2に記載のクロロプレン重合体組成物の製造方法。
- 前記ロジン酸成分の使用量が、前記クロロプレン重合体の重合に用いる単量体100質量部に対して3.0~5.0質量部である、請求項1~3のいずれか一項に記載のクロロプレン重合体組成物の製造方法。
- クロロプレン重合体を含有し、
前記クロロプレン重合体においてデヒドロアビエチン酸、ピマール酸、イソピマール酸、ジヒドロアビエチン酸及びこれらの塩の合計量A2に対するアビエチン酸、ネオアビエチン酸、パラストリン酸、レボピマール酸及びこれらの塩の合計量B2の質量比B2/A2が0.10~3.00であり、
前記クロロプレン重合体のトルエン不溶分が50質量%以上である、クロロプレン重合体組成物。 - 前記クロロプレン重合体が、クロロプレンの単量体単位、及び、2,3-ジクロロ-1,3-ブタジエンの単量体単位を有する、請求項5に記載のクロロプレン重合体組成物。
- 前記2,3-ジクロロ-1,3-ブタジエンの単量体単位の含有量が、前記クロロプレン重合体を構成する単量体単位の全量を基準として0質量%を超え20質量%以下である、請求項6に記載のクロロプレン重合体組成物。
- 請求項5~7のいずれか一項に記載のクロロプレン重合体組成物の浸漬成形体。
- 手袋、風船、カテーテル又は長靴である、請求項8に記載の浸漬成形体。
- 硫黄及び加硫促進剤を含有していない、請求項8又は9に記載の浸漬成形体。
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