WO2003011930A1 - Nouveaux (co)polymeres de polyacetal - Google Patents
Nouveaux (co)polymeres de polyacetal Download PDFInfo
- Publication number
- WO2003011930A1 WO2003011930A1 PCT/JP2002/007440 JP0207440W WO03011930A1 WO 2003011930 A1 WO2003011930 A1 WO 2003011930A1 JP 0207440 W JP0207440 W JP 0207440W WO 03011930 A1 WO03011930 A1 WO 03011930A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyacetal
- mol
- polymer
- dioxolane
- trioxane
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/18—Copolymerisation of aldehydes or ketones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
- C08L59/02—Polyacetals containing polyoxymethylene sequences only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
- C08L59/04—Copolyoxymethylenes
Definitions
- the present invention relates to a polyacetyl (co) polymer which has a high affinity for water and is a liquid while being a polymer.
- liquid polymer materials silicone, polyalkylene glycol, polyvinyl ether, and the like are known, and are used as a heat medium, a lubricant, an oil, and the like.
- the liquid polymer material is preferably water-soluble in consideration of maintenance such as cleaning.
- Silicone is a polymer material that exhibits excellent lubricating properties, but its use is restricted due to its extremely poor affinity for water and lack of water solubility.
- Polyethylene glycol which is a representative example of polyalkylene glycol, is a liquid itself and excellent in water solubility in a low molecular weight to medium molecular weight region, but is not sufficient in terms of heat resistance.
- the molecular weight is high, it becomes crystalline and cannot be said to be liquid, and its handling becomes difficult.
- polyvinyl methyl ether which is a typical example of polyvinyl ether, has compatibility with warm water but is not water-soluble.
- trioxane and 1,3-dioxolan are commonly used.
- Polymerized copolymers are known in a fairly wide range.
- a copolymer obtained by copolymerizing a small amount of 1,3-dioxolane with trioxane as the main component is known as a polyacetal copolymer, and is molded into machine parts as an excellent thermoplastic resin material with a high melting point. It is needless to say that such polyacetal copolymers do not exhibit the properties of the present invention.
- Japanese Patent Publication No. 422-2705 U.S. Pat. No. 3,337,073, U.S. Pat. No.
- the copolymer was found to be solid at room temperature.
- the copolymer described in US Pat. No. 3,337,507 is also a solid at room temperature according to the description in the examples.
- the copolymer described in U.S. Pat. No. 4,788,258 Japanese Patent Application Laid-Open No. 1-131235
- the copolymer disclosed in U.S. Pat. No. 4,954,400 Japanese Unexamined Patent Publication No.
- 2-166184 is characterized in that, in addition to trioxane and 1,3-dioxolan, a small amount of 2 It is a rubbery copolymer obtained by copolymerizing a functional monomer, and is not a liquid polymer as in the present invention. In addition, the depolymerization of these polymers proceeds, and the thermal stability is insufficient.
- An object of the present invention is to solve the above-mentioned problems, to have a high affinity for water, to be a liquid while being a polymer, to have heat resistance, and to be a polymer suitable for applications such as a heat medium and a lubricant. Is to provide.
- the present inventors have studied to achieve the above object, and as a result, a polyacetal prepared by (co) polymerizing a specific amount or more of 1,3-dioxolane and trioxane so that the terminal thereof has a specific value.
- the (co) polymer itself is liquid (amorphous), has excellent water solubility and good thermal stability, and has a high yield of the (co) polymer. And found that the present invention was completed.
- the present invention comprises (co) polymerizing (A) 75 to 100 mol% of 1,3-dioxolane and (B) 25 to 0 mol% of trioxane, and has a total terminal group content of 15 to 300 tmol / kg, Polyacetal (co) polymer which has a terminal amount of hemiformal of not more than 80 ol / kg and is liquid at room temperature, a method for producing the same, and a composition comprising water mixed with the polyacetal (co) polymer It is.
- the present invention provides (A) 1,3-dioxolan (75 to 100 mol%) and (B) trioxane (25 to 0 mol%) by (co) polymerization in the presence of a cationic polymerization catalyst and an alkoxy group-containing compound.
- a cationic polymerization catalyst and an alkoxy group-containing compound.
- To provide a method for producing the above-mentioned polyacetal (co) polymer which controls the amount of terminal groups of the polyacetal (co) polymer by adjusting the amount of the polyacetal (co) polymer added. It is preferred to copolymerize (A) 75 to 99 mol% of 1,3-dioxolane and (B) 25 to 1 mol% of trioxane.
- 1,3-dioxolane (A) used in the present invention is a cyclic formal compound obtainable by reacting ethylene glycol or ethylene oxide with formaldehyde or an aqueous solution thereof in the presence of an acidic catalyst. It is used after being purified by a method such as distillation.
- Trioxane (B) is a cyclic trimer of formaldehyde. Generally, an aqueous formaldehyde solution is prepared in the presence of an acidic catalyst. It is obtained by reacting, and this is purified by a method such as distillation and used.
- the 1,3-dioxolane (A) and trioxane (B) used in the polymerization preferably contain as little impurities as possible such as water, methanol and formic acid.
- the polyacetal (co) polymer of the present invention is obtained by (co) polymerizing 75 to 100 mol% of 1,3-dioxolane (A) and 25 to 0 mol% of trioxane (B).
- the (co) polymerization ratio of 1,3 dioxolane (A) is extremely important. If the (co) polymerization ratio of 1,3-dioxolane (A) is less than 75 mol%, the crystallization temperature will be higher than room temperature, and the liquid performance intended for the present invention will not be obtained.
- Preferred copolymerization ratios are 75-99 mol% of 1,3-dioxolane (A) and 25-1 mol% of trioxane (B), and particularly preferably 78-95 mol% of 1,3-dioxolane (A).
- Trioxane (B) is 22 to 5 mol%.
- the polyacetal (co) polymer of the present invention may further comprise (C) a daricidyl ether compound, an epoxy compound or a cyclic compound other than 1,3-dioxolane in addition to 1,3-dioxolane (A) and trioxane (B).
- a compound obtained by copolymerizing a compound selected from a formal compound and an oxepane compound may be used.
- aliphatic alkyl glycidyl ether, 1,4-butanediol formal, 1,4-butanediol diglycidyl ether, and trimethylolpropane triglycidyl ether are particularly preferable.
- C include ethylene oxide, propylene oxide, butylene oxide, epichlorohydrin, epibromohydrin, styrene oxide, 3,3-bis (chloromethyl) trioxane, tetrahydrofuran, trioxepane, and propylene.
- examples thereof include glycol formal, diethylene dallycol formal, triethylene glycol formal, 1,5-pentendiol formal, and 1,6-hexanediol formal.
- the copolymerization ratio of the compound (C) is preferably 0.01 to 5 mol%, and the copolymer obtained thereby has a lower crystallization temperature, and is one of the objects of the present invention. It becomes a more effective material from the viewpoint of shape performance.
- the polyacetal (co) polymer of the present invention is characterized in that, in the production thereof, a component for adjusting the molecular weight is used in addition to the above components to adjust the amount of terminal groups.
- a component for adjusting the molecular weight a chain transfer agent that does not form an unstable terminal, that is, an alkoxy such as methylal, methoxymethylal, dimethoxymethylal, trimethoxymethylal, or oxymethylene di-n-butyl ether Compounds having a group are exemplified.
- the amount of these molecular weight regulators is adjusted to adjust the total terminal group amount of the resulting polyacetal (co) polymer to 15 to 300 mol / kg, preferably to the total terminal group.
- the base amount was adjusted to 20 to 300 t ol / kg. If the total amount of the terminal groups is too small, the composition becomes viscous and the fluidity becomes extremely poor. On the other hand, if the total amount of the terminal groups is excessive, the thermal stability decreases, which is not preferable.
- a (co) polymer obtained by (co) polymerizing 1,3-dioxolane (A) and trioxane (B) as described above, or a copolymer obtained by further copolymerizing compound (C) is used.
- a cationic polymerization catalyst is generally used as a catalyst.
- Inorganic and organic acids such as perchloric acid, acetyl park mouth rate, t-butyl park mouth rate, hydroxyacetic acid, trichloroacetic acid, trifluoroacetic acid, p-toluenesulfonic acid, etc., triethyloxodimethyltetrafluoroborate, triphenylmethylmethylhexaf 7inch, Aryldiazoniumhexafur Complex salt compounds such as rophosphate, aryldiazotetrafluoroborate, etc. And one or more of alkyl metal salts such as zinc, triethylaluminum, and getylaluminum chloride, and heteropolyacids and isopolyacids.
- alkyl metal salts such as zinc, triethylaluminum, and getylaluminum chloride, and heteropolyacids and isopolyacids.
- boron trifluoride, boron trifluoride getyl etherate, boron trifluoride dibutyl etherate, boron trifluoride dioxanate, boron trifluoride acetate anhydrate, boron trifluoride triethylamine complex compound And the like are preferred.
- These cationic polymerization catalysts can be used as they are, or can be used after being diluted with an organic solvent or the like, and the preparation method is not particularly limited.
- the polymerization apparatus used for the production of the polyacetyl (co) polymer used in the present invention is not particularly limited, and any known method such as a batch type or a continuous type may be used, using a well-known equipment. It is possible. Further, the polymerization temperature is preferably maintained at 40 to 135 ° C. After polymerization in this manner, a deactivation treatment is performed to stop the activity of the catalyst. The deactivation of the catalyst is carried out by adding a basic compound or an aqueous solution thereof to the reaction product discharged from the polymerization machine after the polymerization reaction or the reaction product in the polymerization machine.
- Examples of the basic conjugate for neutralizing and deactivating the polymerization catalyst include ammonia or amines such as triethylamine, tributylamine, triethanolamine, and tributanolamine, or alkali metals and alkaline earths.
- a hydroxide salt of a class of metals and other known catalyst deactivators are used. After the polymerization reaction, it is preferable to quickly add these aqueous solutions to the product to deactivate it. After such a polymerization method and a deactivation method, if necessary, washing, separation and recovery of unreacted monomers, drying, etc. are performed by a conventionally known method.
- a stabilizing treatment is carried out by a known method such as decomposition removal of an unstable terminal or sealing of an unstable terminal with a stable substance, and various necessary stabilizers are blended.
- the stabilizer used herein include one or more of a hindered phenol compound, a nitrogen-containing compound, a hydroxide of an alkali or alkaline earth metal, an inorganic salt, a carboxylate, and the like. be able to.
- the polyacetal (co) polymer of the present invention obtained as described above preferably has a weight average molecular weight of 10,000 to 500,000, particularly preferably 20,000 to 150,000.
- the total amount of terminal groups is as described above, but it is necessary that the amount of hemiformal terminal groups detected by 1 H-NMR is 80/01 or less, preferably O to 60 mmol / kg. kg.
- the amount of impurities, particularly water, in the total amount of the monomers and comonomer to be subjected to the polymerization is preferably 20 ⁇ 1 or less, particularly preferably 10 ppm or less.
- a more stable liquid state can be maintained by adding 0.1 to 20% by weight of water to the polyacetal (co) polymer of the present invention obtained as described above. This is probably because water molecules mixed at the molecular level inhibit crystallization of the (co) polymer. If the amount of water to be added is too small, there is no effect, and if it is too large, the heat resistance characteristic of a polymer melt is impaired, and bumping occurs at 100 ° C or more. Preferably, 0.2 to 10% by weight is effective.
- polyacetal (co) polymer of the present invention can be added as needed to improve heat resistance, fluidity and the like. Further, depending on the purpose or use, one or more general additives such as coloring agents such as dyes and pigments, surfactants, and organic polymer materials can be added.
- coloring agents such as dyes and pigments, surfactants, and organic polymer materials
- the polymer used for physical property evaluation to be dissolved in hexa full O b isopropanol d 2, was' .eta. NM R measurement. It was quantified from the peak area corresponding to each terminal, and the total terminal group amount and the hemiformal terminal group amount were determined.
- the temperature of the evaluation sample was lowered from 100 to 10 ° C / min, and the exothermic peak temperature was measured.
- the evaluation was performed under a nitrogen atmosphere by TAG. That is, the evaluation sample is kept at 150 ° C for 10 minutes, and then heated at a rate of 10 T: / min per minute, weighed at 250 ° C, and expressed as a percentage by weight based on the weight at the start of the temperature increase .
- 1,3-Dioxolane (A), trioxane (B) and, if desired, compound (C) to be added to the copolymer are weighed into a reaction vessel in a ratio shown in Table 1 so that the total amount becomes 100 g and injected. Further, methylol as a molecular weight regulator was added at the ratio shown in Table 1.
- the heating (cooling) medium in the reaction vessel was set at 60 ° C., 30 ppm of phosphotungstic acid was added as a catalyst, and the mixture was stirred under an inert atmosphere for 10 minutes to carry out polymerization.
- the catalyst was deactivated by adding an aqueous solution containing 0.05% by weight of triethylamine at 60 ° C. to deactivate the catalyst. Then, the reaction product was dropped into a methanol solution to precipitate a reaction product. The solution was filtered and dried under vacuum to obtain a polyacetal polymer, which was evaluated.
- a polyacetal copolymer having different terminal group properties was obtained and evaluated in the same manner as in Example 2 except that the addition amounts of methylal and phosphotungstic acid were changed as shown in Table 1.
- Comparative Example 4 A polyacetal (co) polymer was obtained and evaluated in the same manner as in Example 1 except that the ratio of 1,3 dioxolane (A) was reduced.
- composition obtained by adding water in the amount shown in Table 1 to the polyacetal copolymer obtained in Example 2 was evaluated.
- Table 1 shows the evaluation results together with the yield.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
- Polyethers (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02749341A EP1413590A4 (en) | 2001-07-27 | 2002-07-23 | NEW POLYACETAL (CO) POLYMERS |
US10/476,075 US7030207B2 (en) | 2001-07-27 | 2002-07-23 | Polyacetal (co)polymers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001227655A JP4954394B2 (ja) | 2001-07-27 | 2001-07-27 | 新規ポリアセタール(共)重合体 |
JP2001-227655 | 2001-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003011930A1 true WO2003011930A1 (fr) | 2003-02-13 |
Family
ID=19060284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/007440 WO2003011930A1 (fr) | 2001-07-27 | 2002-07-23 | Nouveaux (co)polymeres de polyacetal |
Country Status (5)
Country | Link |
---|---|
US (1) | US7030207B2 (ja) |
EP (1) | EP1413590A4 (ja) |
JP (1) | JP4954394B2 (ja) |
CN (1) | CN100519608C (ja) |
WO (1) | WO2003011930A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104111265A (zh) * | 2013-06-28 | 2014-10-22 | 成都迈斯拓新能源润滑材料有限公司 | 一种有机热载体热稳定性检测方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016098029A1 (en) * | 2014-12-17 | 2016-06-23 | Ticona Gmbh | Polyoxymethylene copolymer suited for use in liquid systems |
CN116888180A (zh) | 2021-02-17 | 2023-10-13 | 瓦克化学股份公司 | 液体1,3-二氧戊环共聚物 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001042326A1 (fr) * | 1999-12-10 | 2001-06-14 | Polyplastics Co., Ltd. | Copolymere polyacetalique |
Family Cites Families (11)
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NL302397A (ja) * | 1963-01-29 | |||
BE647354A (ja) * | 1963-04-30 | |||
JPS4222065Y1 (ja) | 1964-07-18 | 1967-12-16 | ||
NL6603890A (ja) * | 1965-03-24 | 1966-09-26 | ||
US3575930A (en) * | 1968-12-12 | 1971-04-20 | Goodrich Co B F | Polyoxymethylene glycol polymers |
US3661854A (en) * | 1970-02-09 | 1972-05-09 | Du Pont | Method for preparing random copolymers of formaldehyde and olefin oxides and/or vinyl ethers |
US4788258A (en) * | 1987-09-14 | 1988-11-29 | Hoechst Celanese Corporation | Low Tg non-crystalline acetal copolymers |
US4816107A (en) * | 1987-09-14 | 1989-03-28 | Hoechst Celanese Corp. | Acetal polymer bonded articles and method of making same |
US4954400A (en) * | 1988-10-11 | 1990-09-04 | Hoechst Celanese Corp. | Articles utilizing acetal copolymer bonding resins |
US5041505A (en) * | 1989-09-13 | 1991-08-20 | Hoechst Celanese Corp. | Non-crystalline acetal copolymer elastomers |
JP2769287B2 (ja) * | 1994-02-22 | 1998-06-25 | 旭化成工業株式会社 | モ−ルドデポジットの改良されたポリアセタ−ル樹脂組成物の成形方法 |
-
2001
- 2001-07-27 JP JP2001227655A patent/JP4954394B2/ja not_active Expired - Fee Related
-
2002
- 2002-07-23 US US10/476,075 patent/US7030207B2/en not_active Expired - Fee Related
- 2002-07-23 WO PCT/JP2002/007440 patent/WO2003011930A1/ja not_active Application Discontinuation
- 2002-07-23 CN CNB028132467A patent/CN100519608C/zh not_active Expired - Fee Related
- 2002-07-23 EP EP02749341A patent/EP1413590A4/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001042326A1 (fr) * | 1999-12-10 | 2001-06-14 | Polyplastics Co., Ltd. | Copolymere polyacetalique |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104111265A (zh) * | 2013-06-28 | 2014-10-22 | 成都迈斯拓新能源润滑材料有限公司 | 一种有机热载体热稳定性检测方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4954394B2 (ja) | 2012-06-13 |
EP1413590A4 (en) | 2004-09-08 |
CN1522267A (zh) | 2004-08-18 |
JP2003040956A (ja) | 2003-02-13 |
US7030207B2 (en) | 2006-04-18 |
CN100519608C (zh) | 2009-07-29 |
US20040138407A1 (en) | 2004-07-15 |
EP1413590A1 (en) | 2004-04-28 |
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