JPH02202510A - Production of soft polyurethane foam - Google Patents
Production of soft polyurethane foamInfo
- Publication number
- JPH02202510A JPH02202510A JP1022983A JP2298389A JPH02202510A JP H02202510 A JPH02202510 A JP H02202510A JP 1022983 A JP1022983 A JP 1022983A JP 2298389 A JP2298389 A JP 2298389A JP H02202510 A JPH02202510 A JP H02202510A
- Authority
- JP
- Japan
- Prior art keywords
- pts
- weight
- polyurethane foam
- polyether polyol
- parts
- 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.)
- Pending
Links
- 229920005830 Polyurethane Foam Polymers 0.000 title claims description 13
- 239000011496 polyurethane foam Substances 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 229920005862 polyol Polymers 0.000 claims abstract description 26
- 150000003077 polyols Chemical class 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 15
- 229920000570 polyether Polymers 0.000 claims abstract description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920002545 silicone oil Polymers 0.000 claims abstract description 6
- -1 cyclic tertiary amine Chemical class 0.000 claims abstract description 5
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 claims abstract description 4
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005187 foaming Methods 0.000 claims description 7
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- 239000006260 foam Substances 0.000 abstract description 12
- 230000000704 physical effect Effects 0.000 abstract description 7
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 abstract description 6
- 125000000524 functional group Chemical group 0.000 abstract description 2
- 206010016322 Feeling abnormal Diseases 0.000 abstract 1
- 239000012948 isocyanate Substances 0.000 description 6
- 150000002513 isocyanates Chemical class 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000005056 polyisocyanate Substances 0.000 description 3
- 229920001228 polyisocyanate Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、家具用クツション、自動車用クツションなど
に用いられる軟質ポリウレタンフォームを製造する方法
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing flexible polyurethane foam used for furniture cushions, automobile cushions, and the like.
［従来の技術］
従来、水を発泡剤とする軟質ポリウレタンフォームの製
造方法においては、水を余り多く用いるとフオームにス
コーチが生じやすく、また発泡反応のみが起こり硬化反
応が起こりにくく、良好なフオームが得られない。この
ために、アミン系触媒の使用量とシリコーン油の使用量
を増やすことや、原料であるポリオール組成物、ポリイ
ソシアネート、水のうち少なくとも１種を加温すること
によって、スコーチの発生がなく、発泡とともに硬化反
応を起こす方法が提案されている（特開昭５７−６７６
２３号公報、特開昭５４−３１４９８号公報）。また軟
質ポリウレタンフォームの原料として、末端１級水酸基
含有率が５〜６２％のポリエーテルポリオールを用いる
ことも知られている（Ｊ、Ｃｅ１１．Ｐｌａｓ、、 １
９６５（１）１２１〜１３１）。[Prior Art] Conventionally, in the manufacturing method of flexible polyurethane foam using water as a blowing agent, if too much water is used, scorch tends to occur in the foam, and only a foaming reaction occurs, making it difficult for a curing reaction to occur, resulting in a good foam. is not obtained. For this purpose, by increasing the amount of amine catalyst and silicone oil used, and by heating at least one of the raw materials polyol composition, polyisocyanate, and water, scorch does not occur. A method of causing a curing reaction along with foaming has been proposed (Japanese Patent Laid-Open No. 57-676).
23, JP-A-54-31498). It is also known to use a polyether polyol with a terminal primary hydroxyl group content of 5 to 62% as a raw material for flexible polyurethane foam (J, Ce11.Plas, 1
965(1) 121-131).
［発明が解決しようとする課題］
近年、家具用クツション、自動小用クツションを製造す
る場合、モールドを用いる製造方法の方がスラブから製
造する方法より省力化の面でより多く使われるようにな
ってきた。しかしながら、ポリオール組成物とポリイソ
シアネートとの混合物をモールド内で発泡硬化させる場
合、アミン系触媒の使用量とシリコーン油の使用量を増
やしたり、原料であるポリオール組成物、ポリイソシア
ネート、水のうち少なくとも１種を加温して用いても、
用いるポリエーテルポリオールによっては表面がきれい
で、表面感触がソフトで、物性が良好なフオームが得ら
れず、必らずしも充分な方法とはいえない。本発明者ら
は、このような課題を解決するため鋭意検討を重ねた結
果、特定のポリエーテルポリオールを用い、かつイソシ
アネート基と水酸基との当量比をある範囲で混合し、モ
ールド内で発泡硬化させることにより、表面がきれいで
、表面感触がソフトで、物性が良好な軟質ポリウレタン
フォームが得られることを見い出し、本発明を完成した
。[Problem to be solved by the invention] In recent years, when manufacturing cushions for furniture and cushions for automatic use, manufacturing methods using molds have become more popular than manufacturing methods from slabs in terms of labor savings. It's here. However, when foaming and curing a mixture of a polyol composition and a polyisocyanate in a mold, the amount of amine catalyst and silicone oil used must be increased, or at least one of the raw materials polyol composition, polyisocyanate, and water must be used. Even if one type is heated and used,
Depending on the polyether polyol used, it may not be possible to obtain a foam with a clean surface, a soft surface feel, and good physical properties, and this method cannot necessarily be said to be sufficient. As a result of intensive studies to solve these problems, the inventors of the present invention found that using a specific polyether polyol, mixing the isocyanate groups and hydroxyl groups in an equivalent ratio within a certain range, and foaming and curing in a mold. The inventors have discovered that by doing this, a flexible polyurethane foam with a clean surface, soft surface feel, and good physical properties can be obtained, and the present invention has been completed.
［課題を解決するための手段］
本発明は、ポリエーテルポリオール１００重量部、水５
〜８重量部、シリコーン油０．２〜３重量部、オクチル
酸第１錫０．０２〜０．５重量部および環状三級アミン
０，０２〜０．５重量部を含有するポリオール組成物と
トルエンジイソシアネート（以下ＴＤＩという）とを混
合し、モールド内で発泡硬化させて軟質ポリウレタンフ
ォームを製造する方法において、ポリエーテルポリオー
ルの末端１級水酸基含有率が６５％以上であり、かつイ
ソシアネート基と水酸基との当量比（以下イソシアネー
ト当量比という）が、０．６〜０．９であることを特徴
とする軟質ポリウレタンフォームを製造する方法に関す
る。[Means for Solving the Problems] The present invention consists of 100 parts by weight of polyether polyol and 5 parts by weight of water.
~8 parts by weight, 0.2 to 3 parts by weight of silicone oil, 0.02 to 0.5 parts by weight of stannous octylate, and 0.02 to 0.5 parts by weight of a cyclic tertiary amine; In the method of manufacturing flexible polyurethane foam by mixing toluene diisocyanate (hereinafter referred to as TDI) and foaming and curing it in a mold, the terminal primary hydroxyl group content of the polyether polyol is 65% or more, and the isocyanate group and the hydroxyl group The method relates to a method for producing a flexible polyurethane foam, characterized in that the equivalent ratio (hereinafter referred to as isocyanate equivalent ratio) with isocyanate is 0.6 to 0.9.
ポリエーテルポリオールは、グリセリン、トリメチロー
ルプロパン、プロピレングリコール、ペンタエリスリト
ール、ソルビトールなどの低分子鼠の水酸基含有化合物
あるいはそれらの混合物に、プロピレンオキシド（以下
ＰＯという）やエチレンオキシド（以下ＥＯという）を
付加して得られるものであるが、この中で顔後にＥＯを
付加して末端１級水酸基含有率を６５％以上に高めたも
のであり、平均官能基数が２．５〜４で、水酸基価（以
下ＯＨ価という）が２４〜６０ ｍｇＫＯＨ／ｇ （７
）ものが好ましい。Polyether polyol is produced by adding propylene oxide (hereinafter referred to as PO) or ethylene oxide (hereinafter referred to as EO) to a low molecular weight hydroxyl group-containing compound such as glycerin, trimethylolpropane, propylene glycol, pentaerythritol, or sorbitol, or a mixture thereof. Among these, EO is added after the face to increase the terminal primary hydroxyl group content to 65% or more, and the average number of functional groups is 2.5 to 4, and the hydroxyl value (hereinafter referred to as OH value) is 24 to 60 mgKOH/g (7
) is preferred.
環状三級アミンは、トリエチレンジアミン、Ｎ−エチル
モルホリン、Ｎ−メチルモルホリンなどである。Cyclic tertiary amines include triethylenediamine, N-ethylmorpholine, N-methylmorpholine, and the like.
ＴＤＩは、２．４−ＴＤＩ、２．６−ＴＤＩあるいはそ
れらの混合物である。TDI is 2.4-TDI, 2.6-TDI or a mixture thereof.
ポリオール組成物とＴＤＩとの混合物を、通常３０〜６
０°Ｃのモールドに注入し、型締後これを１５０°Ｃ以
上の加温オーブンに入れて、数分〜数１０分放霞した後
、モールドから取り出して、軟質ポリウレタンフォーム
を得る。The mixture of polyol composition and TDI is usually 30 to 6
The mixture is poured into a mold at 0°C, and after the mold is clamped, it is placed in an oven heated to 150°C or higher and left in a haze for several to several tens of minutes, and then taken out from the mold to obtain a flexible polyurethane foam.
ポリオール組成物とＴＤＩとの混合は、イソシアネート
当量比が０．６〜０．９の範囲で行われる。The polyol composition and TDI are mixed at an isocyanate equivalent ratio in the range of 0.6 to 0.9.
０．６未満あるいは０．９を越えると得られるフオーム
の表面状態が悪くなる。If it is less than 0.6 or more than 0.9, the surface condition of the resulting foam will be poor.
必要に応じて、ポリオール組成物に加えられるものとし
て、広く知られている着色剤、難燃剤、劣化防止剤など
が用いられてもよい。If necessary, widely known colorants, flame retardants, deterioration inhibitors, and the like may be used as additions to the polyol composition.
［実施例および比較例〕
あらかじめ、第１表に示す量の水、シリコーン油、オク
チル酸第１錫およびトリエチレンジアミンを添加したポ
リエーテルポリオールＡまたはＡとＢに、２．４−ＴＤ
Ｉと２．６−ＴＤＩの重量比が８０対２０の混合物（以
下Ｔ−８０という）を、それぞれ第１表に示すイソシア
ネート当量比になる様に加え、スクリュー型撹拌機（約
２０００ ｒｐ＋ｏ ）で約６秒間混合して、４０°Ｃ
に加温したアルミ製のモールド内に注入した。型締後た
だちに、これを１５０℃の加温オープンに入れて、約１
０分放置した後、モールドから取り出して、軟質ポリウ
レタンフォームを得た。[Examples and Comparative Examples] 2.4-TD was added to polyether polyol A or A and B to which water, silicone oil, stannous octylate, and triethylene diamine were added in advance in the amounts shown in Table 1.
A mixture of I and 2.6-TDI in a weight ratio of 80:20 (hereinafter referred to as T-80) was added to the isocyanate equivalent ratio shown in Table 1, and mixed with a screw type stirrer (approximately 2000 rp+o). Mix for about 6 seconds and heat to 40°C.
The mixture was poured into an aluminum mold heated to . Immediately after mold clamping, put it in a heating oven at 150℃ and heat it for about 1 hour.
After being left for 0 minutes, it was taken out from the mold to obtain a flexible polyurethane foam.
−８放置後フオームの密度を測定した。フオームの表面
状態を調べて、スキンが剥離してぃなかったりヒビ割れ
がないものを良好とし、スキンが剥離したりヒビ割れが
あるものを不良とした。フオームの表面感触を調べて、
表面のスキン層が薄く、手で押さえたときの感触が柔ら
がいものをソフトとし、スキン層が厚く、手で押さえた
ときの感触がごわごわしたものをハードとした。フォー
ムの物性として圧縮永久歪を測定した。圧縮永久歪（％
）が小さいものほどフオームの物性は良好である。結果
を第１表に示す。-8 After standing, the density of the foam was measured. The surface condition of the foam was examined, and those with no peeling of the skin or cracks were evaluated as good, and those with peeling of the skin or cracks were evaluated as poor. Examine the surface feel of the foam,
A product with a thin skin layer on the surface and a soft feel when pressed with the hand is considered soft, and a product with a thick skin layer and a stiff feel when pressed with the hand is considered hard. Compression set was measured as a physical property of the foam. Compression set (%
) is smaller, the physical properties of the foam are better. The results are shown in Table 1.
比較例として、ポリエーテルポリオールＡまたはＡとＢ
に代えて、ポリエーテルポリオールＣを用いるか、また
はポリエーテルポリオールＡもしくはＣを用い、Ｔ−８
０を本発明のイソシアネート当量比の範囲外になる様に
加えた以外は、実施例と同様にして軟質ポリウレタンフ
ォームを得、その密度、表面状態、表面感触、物性を測
定した。As a comparative example, polyether polyol A or A and B
Instead of using polyether polyol C, or using polyether polyol A or C, T-8
A flexible polyurethane foam was obtained in the same manner as in the example except that 0 was added so as to be outside the range of the isocyanate equivalent ratio of the present invention, and its density, surface condition, surface feel, and physical properties were measured.
結果を第１表に示す。The results are shown in Table 1.
以下余白
［発明の効果］
実施例および比較例から明らかなように、水を発泡剤と
して用いる軟質ポリウレタンフォームを製造する方法に
おいて、所定のポリエーテルポリオールを用い、かつイ
ソシアネート当量比が所定の範囲でポリオール組成物と
ＴＤＩとを混合し、モールド内で発泡硬化させることに
より、表面がきれいで、表面感触がソフトで、物性が良
好なフオームが得られ、家具用クツション、自動車用ク
ツションなどに広く用いることが出来ろ。Blank space below [Effects of the Invention] As is clear from the Examples and Comparative Examples, in a method for producing flexible polyurethane foam using water as a blowing agent, a predetermined polyether polyol is used and the isocyanate equivalent ratio is within a predetermined range. By mixing a polyol composition and TDI and foaming and curing it in a mold, a foam with a clean surface, soft surface feel, and good physical properties can be obtained, and is widely used in furniture cushions, automobile cushions, etc. You can do it.
以上that's all
Claims (1)
量部、シリコーン油０．２〜３重量部、オクチル酸第１
錫０．０２〜０．５重量部および環状三級アミン０．０
２〜０．５重量部を含有するポリオール組成物とトルエ
ンジイソシアネートとを混合し、モールド内で発泡硬化
させて軟質ポリウレタンフォームを製造する方法におい
て、ポリエーテルポリオールの末端１級水酸基含有率が
６５％以上であり、かつイソシアネート基と水酸基との
当量比が０．６〜０．９であることを特徴とする軟質ポ
リウレタンフォームを製造する方法。1. 100 parts by weight of polyether polyol, 5 to 8 parts by weight of water, 0.2 to 3 parts by weight of silicone oil, 1st octylic acid
0.02-0.5 parts by weight of tin and 0.0 part by weight of cyclic tertiary amine
In a method of manufacturing a flexible polyurethane foam by mixing a polyol composition containing 2 to 0.5 parts by weight with toluene diisocyanate and foaming and curing it in a mold, the terminal primary hydroxyl group content of the polyether polyol is 65%. A method for producing a flexible polyurethane foam which is the above and is characterized in that the equivalent ratio of isocyanate groups to hydroxyl groups is 0.6 to 0.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022983A JPH02202510A (en) | 1989-01-31 | 1989-01-31 | Production of soft polyurethane foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022983A JPH02202510A (en) | 1989-01-31 | 1989-01-31 | Production of soft polyurethane foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02202510A true JPH02202510A (en) | 1990-08-10 |
Family
ID=12097785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1022983A Pending JPH02202510A (en) | 1989-01-31 | 1989-01-31 | Production of soft polyurethane foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02202510A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2038909A1 (en) * | 1991-09-25 | 1993-08-01 | Gonzalez Hernandez Adelaido | A process for obtaining an air-freshening and cleansing product. |
| JP2010209200A (en) * | 2009-03-10 | 2010-09-24 | Sanyo Chem Ind Ltd | Polyurethane foam |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5823821A (en) * | 1975-06-30 | 1983-02-12 | ユニオン・カ−バイド・コ−ポレ−シヨン | Manufacture of polyurethane foam |
-
1989
- 1989-01-31 JP JP1022983A patent/JPH02202510A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5823821A (en) * | 1975-06-30 | 1983-02-12 | ユニオン・カ−バイド・コ−ポレ−シヨン | Manufacture of polyurethane foam |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2038909A1 (en) * | 1991-09-25 | 1993-08-01 | Gonzalez Hernandez Adelaido | A process for obtaining an air-freshening and cleansing product. |
| JP2010209200A (en) * | 2009-03-10 | 2010-09-24 | Sanyo Chem Ind Ltd | Polyurethane foam |
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