JPH11240903A5 - - Google Patents
Info
- Publication number
- JPH11240903A5 JPH11240903A5 JP1998357844A JP35784498A JPH11240903A5 JP H11240903 A5 JPH11240903 A5 JP H11240903A5 JP 1998357844 A JP1998357844 A JP 1998357844A JP 35784498 A JP35784498 A JP 35784498A JP H11240903 A5 JPH11240903 A5 JP H11240903A5
- Authority
- JP
- Japan
- Prior art keywords
- polymerization initiator
- supply pipe
- water
- monomer
- producing
- Prior art date
- 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.)
- Granted
Links
Description
【特許請求の範囲】
【請求項１】 親水性単量体を含む水溶液を、重合開始剤の存在下、連続的に静置重合して吸水性樹脂を製造する方法において、
親水性単量体水溶液と、重合開始剤のうちの少なくとも１成分とを、それぞれ異なる供給管を通して重合機中へ供給することを特徴とする吸水性樹脂の製造方法。
【請求項２】 重合開始剤として、酸化性重合開始剤と還元剤との組み合わせからなるレドックス系重合開始剤を用いる、請求項１に記載の吸水性樹脂の製造方法。
【請求項３】 親水性単量体を含む水溶液を重合機へ供給するための単量体供給管と、重合開始剤のうちの少なくとも１成分を重合機へ供給するための重合開始剤供給管とが、前記単量体供給管および前記重合開始剤供給管の少なくとも一方の出口付近において、両供給管が隣接する構造となっている、請求項１または２に記載の吸水性樹脂の製造方法。
【請求項４】 単量体供給管と重合開始剤供給管とは、単量体供給管を外管とし、重合開始剤供給管を内管とする二重管構造を有するものとする、請求項１から３までのいずれかに記載の吸水性樹脂の製造方法。
【請求項５】 内管と外管とはその一方の先端部が他方の先端部よりも突出しているものとする、請求項４に記載の吸水性樹脂の製造方法。
[Claims]
[Claim 1] A method for producing a water-absorbent resin by continuously statically polymerizing an aqueous solution containing a hydrophilic monomer in the presence of a polymerization initiator,
A method for producing a water-absorbent resin, characterized in that an aqueous hydrophilic monomer solution and at least one component of a polymerization initiator are supplied to a polymerizer through separate supply pipes.
Claim 2] Claim 1, wherein a redox polymerization initiator comprising a combination of an oxidizing polymerization initiator and a reducing agent is used as the polymerization initiator.toA method for producing the water-absorbent resin described above.
[Claim 3] Claim 1 or 2, wherein a monomer supply pipe for supplying an aqueous solution containing a hydrophilic monomer to a polymerizer and a polymerization initiator supply pipe for supplying at least one component of a polymerization initiator to a polymerizer are configured so that the two supply pipes are adjacent to each other near the outlet of at least one of the monomer supply pipe and the polymerization initiator supply pipe.toA method for producing the water-absorbent resin described above.
[Claims4The monomer supply pipe and the polymerization initiator supply pipe have a double pipe structure in which the monomer supply pipe is an outer pipe and the polymerization initiator supply pipe is an inner pipe.ThingsclaimsAny of 1 to 3Production of the water-absorbing resin describedmethod.
[Claims5】 The inner and outer tubes aretipOn the other handProtruding beyond the tipLet's say, claim4Production of the water-absorbing resin describedmethod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35784498A JP4087520B2 (en) | 1997-12-25 | 1998-12-16 | Method for producing water absorbent resin |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35814897 | 1997-12-25 | ||
| JP9-358148 | 1997-12-25 | ||
| JP35784498A JP4087520B2 (en) | 1997-12-25 | 1998-12-16 | Method for producing water absorbent resin |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH11240903A JPH11240903A (en) | 1999-09-07 |
| JPH11240903A5 true JPH11240903A5 (en) | 2005-10-27 |
| JP4087520B2 JP4087520B2 (en) | 2008-05-21 |
Family
ID=26580680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35784498A Expired - Fee Related JP4087520B2 (en) | 1997-12-25 | 1998-12-16 | Method for producing water absorbent resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4087520B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4087682B2 (en) | 2002-11-07 | 2008-05-21 | 株式会社日本触媒 | Method and apparatus for producing water-absorbing resin |
| JP4685425B2 (en) * | 2004-12-06 | 2011-05-18 | 旭化成ケミカルズ株式会社 | Manufacturing apparatus and manufacturing method for water absorbent resin |
| JP2006160845A (en) * | 2004-12-06 | 2006-06-22 | Asahi Kasei Chemicals Corp | Method for producing water absorbent resin |
| DE102005042607A1 (en) | 2005-09-07 | 2007-03-08 | Basf Ag | polymerization |
| DE102005042609A1 (en) * | 2005-09-07 | 2007-03-08 | Basf Ag | polymerization |
| DE102005042608A1 (en) † | 2005-09-07 | 2007-03-08 | Basf Ag | polymerization |
| EP2139842B1 (en) * | 2007-03-23 | 2014-03-05 | Basf Se | Transportation of a monomer composition in a transport means or pipe |
| JP5410412B2 (en) | 2008-03-31 | 2014-02-05 | 株式会社日本触媒 | Method for producing particulate water-absorbing agent comprising water-absorbing resin as main component and production apparatus therefor |
| CN116920776B (en) * | 2023-07-24 | 2026-04-10 | 苏州富淼膜科技有限公司 | A polymerization reaction vessel, polymerization equipment and polymerization method thereof |
-
1998
- 1998-12-16 JP JP35784498A patent/JP4087520B2/en not_active Expired - Fee Related
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