CA2068802A1 - Article moule en resine de polyacetal ramifie, a paroi mince - Google Patents

Article moule en resine de polyacetal ramifie, a paroi mince

Info

Publication number: CA2068802A1
Authority: CA; Canada
Prior art keywords: molded article; thin; polyacetal resin; branched polyacetal; weight
Prior art date: 1991-05-17
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Abandoned

Application number

CA 2068802

Other languages

English (en)

Inventor

Noriyuki Sugiyama

Yoshinori Ohachi

Katsushi Sasaki

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Polyplastics Co Ltd

Original Assignee

Individual

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1991-05-17

Filing date

1992-05-15

Publication date

1992-11-18

1992-05-15 Application filed by Individual filed Critical Individual

1992-11-18 Publication of CA2068802A1 publication Critical patent/CA2068802A1/fr

Status Abandoned legal-status Critical Current

Links

229930182556 Polyacetal Natural products 0.000 title claims abstract description 48
229920006324 polyoxymethylene Polymers 0.000 title claims abstract description 48
229920005989 resin Polymers 0.000 title claims abstract description 20
239000011347 resin Substances 0.000 title claims abstract description 20
150000001875 compounds Chemical class 0.000 claims abstract description 16
BGJSXRVXTHVRSN-UHFFFAOYSA-N 1,3,5-trioxane Chemical compound C1OCOCO1 BGJSXRVXTHVRSN-UHFFFAOYSA-N 0.000 claims abstract description 10
125000004122 cyclic group Chemical group 0.000 claims abstract description 10
238000005452 bending Methods 0.000 claims abstract description 9
150000004292 cyclic ethers Chemical class 0.000 claims abstract description 9
238000012360 testing method Methods 0.000 claims abstract description 7
238000000465 moulding Methods 0.000 claims abstract description 5
238000006116 polymerization reaction Methods 0.000 claims description 12
-1 acetal compound Chemical class 0.000 claims description 6
125000000217 alkyl group Chemical group 0.000 claims description 6
WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 6
239000012212 insulator Substances 0.000 claims description 4
WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 claims description 3
IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 3
DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 3
125000004432 carbon atom Chemical group C* 0.000 claims description 3
QQIVNUPLBOUZMR-UHFFFAOYSA-N trioxepane Chemical compound C1CCOOOC1 QQIVNUPLBOUZMR-UHFFFAOYSA-N 0.000 claims description 2
125000002947 alkylene group Chemical group 0.000 claims 1
GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims 1
RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 6
238000004519 manufacturing process Methods 0.000 description 5
239000000463 material Substances 0.000 description 5
229920000642 polymer Polymers 0.000 description 5
WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 4
239000003054 catalyst Substances 0.000 description 4
239000000945 filler Substances 0.000 description 4
238000005259 measurement Methods 0.000 description 4
238000000034 method Methods 0.000 description 4
239000000203 mixture Substances 0.000 description 4
239000000178 monomer Substances 0.000 description 4
125000005704 oxymethylene group Chemical group [H]C([H])([*:2])O[*:1] 0.000 description 4
229910015900 BF3 Inorganic materials 0.000 description 3
ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
239000002253 acid Substances 0.000 description 3
239000000654 additive Substances 0.000 description 3
239000011256 inorganic filler Substances 0.000 description 3
229910003475 inorganic filler Inorganic materials 0.000 description 3
239000011541 reaction mixture Substances 0.000 description 3
239000000126 substance Substances 0.000 description 3
HPILSDOMLLYBQF-UHFFFAOYSA-N 2-[1-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical compound C1OC1COC(CCC)OCC1CO1 HPILSDOMLLYBQF-UHFFFAOYSA-N 0.000 description 2
CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
229920000049 Carbon (fiber) Polymers 0.000 description 2
PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
150000007513 acids Chemical class 0.000 description 2
150000008064 anhydrides Chemical class 0.000 description 2
238000010923 batch production Methods 0.000 description 2
239000004917 carbon fiber Substances 0.000 description 2
238000006243 chemical reaction Methods 0.000 description 2
239000003795 chemical substances by application Substances 0.000 description 2
230000000052 comparative effect Effects 0.000 description 2
238000010924 continuous production Methods 0.000 description 2
238000007796 conventional method Methods 0.000 description 2
229920001577 copolymer Polymers 0.000 description 2
NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 description 2
150000002148 esters Chemical class 0.000 description 2
230000002349 favourable effect Effects 0.000 description 2
235000019256 formaldehyde Nutrition 0.000 description 2
239000011521 glass Substances 0.000 description 2
239000003365 glass fiber Substances 0.000 description 2
125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
238000010348 incorporation Methods 0.000 description 2
239000007788 liquid Substances 0.000 description 2
VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 2
230000002787 reinforcement Effects 0.000 description 2
239000000454 talc Substances 0.000 description 2
229910052623 talc Inorganic materials 0.000 description 2
229910052719 titanium Inorganic materials 0.000 description 2
239000010936 titanium Substances 0.000 description 2
PYOKUURKVVELLB-UHFFFAOYSA-N trimethyl orthoformate Chemical compound COC(OC)OC PYOKUURKVVELLB-UHFFFAOYSA-N 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
AUAGGMPIKOZAJZ-UHFFFAOYSA-N 1,3,6-trioxocane Chemical compound C1COCOCCO1 AUAGGMPIKOZAJZ-UHFFFAOYSA-N 0.000 description 1
VDFVNEFVBPFDSB-UHFFFAOYSA-N 1,3-dioxane Chemical compound C1COCOC1 VDFVNEFVBPFDSB-UHFFFAOYSA-N 0.000 description 1
XSGMGAINOILNJR-UHFFFAOYSA-N 2-(9h-fluoren-9-ylmethoxycarbonylamino)-3-methyl-3-tritylsulfanylbutanoic acid Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1COC(=O)NC(C(O)=O)C(C)(C)SC(C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 XSGMGAINOILNJR-UHFFFAOYSA-N 0.000 description 1
SEFYJVFBMNOLBK-UHFFFAOYSA-N 2-[2-[2-(oxiran-2-ylmethoxy)ethoxy]ethoxymethyl]oxirane Chemical compound C1OC1COCCOCCOCC1CO1 SEFYJVFBMNOLBK-UHFFFAOYSA-N 0.000 description 1
SFXNZFATUMWBHR-UHFFFAOYSA-N 2-morpholin-4-yl-2-pyridin-3-ylacetonitrile Chemical compound C=1C=CN=CC=1C(C#N)N1CCOCC1 SFXNZFATUMWBHR-UHFFFAOYSA-N 0.000 description 1
NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
229910021630 Antimony pentafluoride Inorganic materials 0.000 description 1
ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
239000002841 Lewis acid Substances 0.000 description 1
GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
229910021627 Tin(IV) chloride Inorganic materials 0.000 description 1
238000005299 abrasion Methods 0.000 description 1
125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
230000002411 adverse Effects 0.000 description 1
150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
125000001931 aliphatic group Chemical group 0.000 description 1
229910052787 antimony Inorganic materials 0.000 description 1
WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
VBVBHWZYQGJZLR-UHFFFAOYSA-I antimony pentafluoride Chemical compound F[Sb](F)(F)(F)F VBVBHWZYQGJZLR-UHFFFAOYSA-I 0.000 description 1
239000002216 antistatic agent Substances 0.000 description 1
229910052785 arsenic Inorganic materials 0.000 description 1
RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
YBGKQGSCGDNZIB-UHFFFAOYSA-N arsenic pentafluoride Chemical compound F[As](F)(F)(F)F YBGKQGSCGDNZIB-UHFFFAOYSA-N 0.000 description 1
239000011324 bead Substances 0.000 description 1
229910052796 boron Inorganic materials 0.000 description 1
229920005605 branched copolymer Polymers 0.000 description 1
238000012662 bulk polymerization Methods 0.000 description 1
229910052801 chlorine Inorganic materials 0.000 description 1
125000001309 chloro group Chemical group Cl* 0.000 description 1
229920006026 co-polymeric resin Polymers 0.000 description 1
239000003086 colorant Substances 0.000 description 1
238000007334 copolymerization reaction Methods 0.000 description 1
238000004132 cross linking Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
CCIVGXIOQKPBKL-UHFFFAOYSA-M ethanesulfonate Chemical compound CCS([O-])(=O)=O CCIVGXIOQKPBKL-UHFFFAOYSA-M 0.000 description 1
150000002170 ethers Chemical class 0.000 description 1
238000010528 free radical solution polymerization reaction Methods 0.000 description 1
125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
150000004820 halides Chemical class 0.000 description 1
229910052736 halogen Inorganic materials 0.000 description 1
125000005843 halogen group Chemical group 0.000 description 1
150000002367 halogens Chemical class 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
239000011964 heteropoly acid Substances 0.000 description 1
229920001519 homopolymer Polymers 0.000 description 1
BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
150000007517 lewis acids Chemical class 0.000 description 1
229920005684 linear copolymer Polymers 0.000 description 1
239000000314 lubricant Substances 0.000 description 1
OHZZTXYKLXZFSZ-UHFFFAOYSA-I manganese(3+) 5,10,15-tris(1-methylpyridin-1-ium-4-yl)-20-(1-methylpyridin-4-ylidene)porphyrin-22-ide pentachloride Chemical compound [Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[Mn+3].C1=CN(C)C=CC1=C1C(C=C2)=NC2=C(C=2C=C[N+](C)=CC=2)C([N-]2)=CC=C2C(C=2C=C[N+](C)=CC=2)=C(C=C2)N=C2C(C=2C=C[N+](C)=CC=2)=C2N=C1C=C2 OHZZTXYKLXZFSZ-UHFFFAOYSA-I 0.000 description 1
230000013011 mating Effects 0.000 description 1
239000000155 melt Substances 0.000 description 1
239000010445 mica Substances 0.000 description 1
229910052618 mica group Inorganic materials 0.000 description 1
239000003607 modifier Substances 0.000 description 1
231100000989 no adverse effect Toxicity 0.000 description 1
239000008188 pellet Substances 0.000 description 1
NAHIZHJHSUSESF-UHFFFAOYSA-N perchloryl acetate Chemical compound CC(=O)OCl(=O)(=O)=O NAHIZHJHSUSESF-UHFFFAOYSA-N 0.000 description 1
DHRLEVQXOMLTIM-UHFFFAOYSA-N phosphoric acid;trioxomolybdenum Chemical compound O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.OP(O)(O)=O DHRLEVQXOMLTIM-UHFFFAOYSA-N 0.000 description 1
OBCUTHMOOONNBS-UHFFFAOYSA-N phosphorus pentafluoride Chemical compound FP(F)(F)(F)F OBCUTHMOOONNBS-UHFFFAOYSA-N 0.000 description 1
230000000379 polymerizing effect Effects 0.000 description 1
239000000843 powder Substances 0.000 description 1
229960000380 propiolactone Drugs 0.000 description 1
230000001105 regulatory effect Effects 0.000 description 1
239000007787 solid Substances 0.000 description 1
230000006641 stabilisation Effects 0.000 description 1
238000011105 stabilization Methods 0.000 description 1
239000003381 stabilizer Substances 0.000 description 1
239000004094 surface-active agent Substances 0.000 description 1
AFSIIZRPQXBCFM-UHFFFAOYSA-N tert-butyl perchlorate Chemical compound CC(C)(C)OCl(=O)(=O)=O AFSIIZRPQXBCFM-UHFFFAOYSA-N 0.000 description 1
AHJWSRRHTXRLAQ-UHFFFAOYSA-N tetramethoxymethane Chemical compound COC(OC)(OC)OC AHJWSRRHTXRLAQ-UHFFFAOYSA-N 0.000 description 1
HLCHESOMJVGDSJ-UHFFFAOYSA-N thiq Chemical compound C1=CC(Cl)=CC=C1CC(C(=O)N1CCC(CN2N=CN=C2)(CC1)C1CCCCC1)NC(=O)C1NCC2=CC=CC=C2C1 HLCHESOMJVGDSJ-UHFFFAOYSA-N 0.000 description 1
229910052718 tin Inorganic materials 0.000 description 1
HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
239000013638 trimer Substances 0.000 description 1
AQWKGXFXWCQPDB-UHFFFAOYSA-N trimethoxy(methoxymethoxy)methane Chemical compound COCOC(OC)(OC)OC AQWKGXFXWCQPDB-UHFFFAOYSA-N 0.000 description 1
125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1

Landscapes

Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Manufacture Of Macromolecular Shaped Articles (AREA)

CA 2068802 1991-05-17 1992-05-15 Article moule en resine de polyacetal ramifie, a paroi mince Abandoned CA2068802A1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP11315691A JPH04339831A (ja)	1991-05-17	1991-05-17	分岐ポリアセタール樹脂製薄肉成形品
JP91/113156		1991-05-17

Publications (1)

Publication Number	Publication Date
CA2068802A1 true CA2068802A1 (fr)	1992-11-18

Family

ID=14604984

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA 2068802 Abandoned CA2068802A1 (fr)	1991-05-17	1992-05-15	Article moule en resine de polyacetal ramifie, a paroi mince

Country Status (3)

Country	Link
JP (1)	JPH04339831A (fr)
CA (1)	CA2068802A1 (fr)
MX (1)	MX9202331A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1998029483A1 (fr) *	1996-12-25	1998-07-09	Asahi Kasei Kogyo Kabushiki Kaisha	Moulage en resine polymere d'oxymethylene a haute rigidite
JP2001354832A (ja) *	2000-06-15	2001-12-25	Polyplastics Co	ポリアセタール樹脂組成物
JP2001354833A (ja) *	2000-06-16	2001-12-25	Polyplastics Co	ポリアセタール樹脂組成物
JP2002003696A (ja) *	2000-06-22	2002-01-09	Polyplastics Co	ポリアセタール樹脂組成物
JP2002003695A (ja) *	2000-06-22	2002-01-09	Polyplastics Co	ポリアセタール樹脂組成物
JP5208333B2 (ja) *	2000-06-23	2013-06-12	ポリプラスチックス株式会社	ポリアセタール樹脂組成物
JP4979856B2 (ja) *	2001-05-31	2012-07-18	ポリプラスチックス株式会社	ポリアセタール樹脂組成物
JP2005232404A (ja) *	2004-02-23	2005-09-02	Mitsubishi Gas Chem Co Inc	ポリアセタール樹脂組成物
JP5428252B2 (ja) *	2008-09-05	2014-02-26	三菱瓦斯化学株式会社	分岐・架橋ポリアセタール共重合体

1991
- 1991-05-17 JP JP11315691A patent/JPH04339831A/ja active Pending
1992
- 1992-05-15 CA CA 2068802 patent/CA2068802A1/fr not_active Abandoned
- 1992-05-18 MX MX9202331A patent/MX9202331A/es unknown

Also Published As

Publication number	Publication date
JPH04339831A (ja)	1992-11-26
MX9202331A (es)	1992-11-30

Legal Events

Date	Code	Title	Description
1994-11-15	FZDE	Dead

Publication	Publication Date	Title
KR910007010B1 (ko)	1991-09-14	열가소성 수지 조성물
CA2068802A1 (fr)	1992-11-18	Article moule en resine de polyacetal ramifie, a paroi mince
US20050182200A1 (en)	2005-08-18	Polyacetal resin composition
JPH02113010A (ja)	1990-04-25	エラストマー性アセタールポリマー
US3775363A (en)	1973-11-27	Oxymethylene polymer compositions containing acicular calcium metasilicate
EP1215245B1 (fr)	2004-08-11	Composition a base de resine de polyacetal
EP1270629B1 (fr)	2009-07-22	Procede pour la preparation d'un copolymere polyacetalique
JP3088159B2 (ja)	2000-09-18	ポリアセタール成形体
JPH06199972A (ja)	1994-07-19	高い耐衝撃性のポリアセタール成形材料、その製造方法およびその用途
EP1273624B1 (fr)	2006-08-02	Resine de polyacetal ramifie
JP4937436B2 (ja)	2012-05-23	ポリアセタール共重合体及びその製造方法
JP5208333B2 (ja)	2013-06-12	ポリアセタール樹脂組成物
JP4467669B2 (ja)	2010-05-26	分岐ポリアセタール樹脂組成物
KR100529457B1 (ko)	2005-11-17	폴리아세탈 공중합체
JPH0439319A (ja)	1992-02-10	摺動部材用分岐ポリアセタール共重合樹脂
JP3926512B2 (ja)	2007-06-06	ポリアセタール共重合体
JP4979856B2 (ja)	2012-07-18	ポリアセタール樹脂組成物
JP3957893B2 (ja)	2007-08-15	摺動部品
JP3883750B2 (ja)	2007-02-21	ポリアセタール共重合体
EP3460002B1 (fr)	2022-03-16	Procédé de production d'une composition de résine de polyacétal
JP2002234923A (ja)	2002-08-23	ポリアセタール共重合体及び樹脂組成物
JP3926484B2 (ja)	2007-06-06	ポリアセタール共重合体
JP2024045843A (ja)	2024-04-03	ポリアセタール樹脂組成物
SU416953A3 (fr)	1974-02-25
JP3850548B2 (ja)	2006-11-29	ポリアセタール樹脂の連続製造方法