JPS62172039A - Production of asphalt foam - Google Patents
Production of asphalt foamInfo
- Publication number
- JPS62172039A JPS62172039A JP1304586A JP1304586A JPS62172039A JP S62172039 A JPS62172039 A JP S62172039A JP 1304586 A JP1304586 A JP 1304586A JP 1304586 A JP1304586 A JP 1304586A JP S62172039 A JPS62172039 A JP S62172039A
- Authority
- JP
- Japan
- Prior art keywords
- asphalt
- foam
- polyol
- water
- compound
- 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
- 239000010426 asphalt Substances 0.000 title claims abstract description 41
- 239000006260 foam Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 238000000034 method Methods 0.000 claims abstract description 21
- 229920005862 polyol Polymers 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- -1 polyol compound Chemical class 0.000 claims abstract description 15
- 239000012948 isocyanate Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000012974 tin catalyst Substances 0.000 claims abstract description 5
- 150000001412 amines Chemical class 0.000 claims abstract description 4
- 239000003054 catalyst Substances 0.000 claims abstract description 4
- 238000005187 foaming Methods 0.000 claims description 12
- 239000011259 mixed solution Substances 0.000 claims description 4
- 239000004604 Blowing Agent Substances 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 150000003077 polyols Chemical class 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 abstract description 6
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 abstract description 6
- 239000004721 Polyphenylene oxide Substances 0.000 abstract description 5
- 229920000570 polyether Polymers 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 3
- 229920005906 polyester polyol Polymers 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- 239000011369 resultant mixture Substances 0.000 abstract 2
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 abstract 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 239000000839 emulsion Substances 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はアスファルトを主要な成分とした発泡体の製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing a foam whose main component is asphalt.
アスファルトを主成分とする発泡体の製造方法として、
例えば次のものが従来知られている。As a method for producing foam whose main component is asphalt,
For example, the following are conventionally known.
第一の方法は、連続気泡を有するウレタンーーーｌずカ
ー７フ１−旧ｋ”：１□≦□１．スｉ＼ｌ毒フマ−＋
−−１゜トエマルジョンを含浸させる方法である。こう
して得られたアスファルト発泡体は目地材料に要求され
る撥水性および緩徐な復元力を具備し、家屋２車輛ある
いは土木工事等に於ける目地材料として広く用いられて
来た。しかし、この第一の方法では所謂含浸ムラを生じ
て均一な品質が得られないという問題や、繰り返し圧縮
されると発泡体の気泡壁に含浸付着されたアスファルト
が徐々に失われ、品質が低下するという問題を有してい
た。The first method is to use urethane with open cells.
--This is a method of impregnating with a 1° emulsion. The asphalt foam thus obtained has the water repellency and slow restoring power required of a joint material, and has been widely used as a joint material in houses, vehicles, civil engineering works, and the like. However, with this first method, there is a problem that uniform quality cannot be obtained due to so-called uneven impregnation, and when the foam is compressed repeatedly, the asphalt impregnated and adhered to the cell walls of the foam is gradually lost, resulting in a decrease in quality. I had the problem of doing so.
第二の方法は、上記第一の方法における問題を解決する
ことを目的として出願人が先に提案したものである。こ
の方法はアスファルトの水性エマルジョンに対し、エチ
レンオキサイド含有率１５％以Ｆのポリエーテルポリオ
ールと有機イソシアネートとを反応させて得らたウレタ
ンプレポリマーを添加し、混合して発泡させる方法であ
る。The second method was previously proposed by the applicant for the purpose of solving the problems in the first method. In this method, a urethane prepolymer obtained by reacting a polyether polyol with an ethylene oxide content of 15% or more with an organic isocyanate is added to an aqueous asphalt emulsion, mixed, and foamed.
この場合、使用するウレタンプレポリマーを特に限定し
たのは、アスファルト成分を水性エマルジョンとして添
加するからウレタンプレボレマーには水との良好な親和
性が要求され、上記のウレタンプレポリマーがこの要件
を満たすからである。In this case, the urethane prepolymer used was specifically limited because the asphalt component is added as an aqueous emulsion, so the urethane prepolymer is required to have good affinity with water, and the above urethane prepolymer satisfies this requirement. It is from.
この第二の方法では、水性アスファルトエマルジョン及
びウレタンプレポリマーを混合攪拌すると、ウレタンプ
レポリマーが重合反応を起してポリウレタンリンケージ
が成長すると共に、アスファルトエマルジョン中の水と
ウレタンプレポリマー中の１６イソシアネート基が下記
のように反応して炭酸ガスを発生し、発泡作用が行なわ
れるものである。In this second method, when an aqueous asphalt emulsion and a urethane prepolymer are mixed and stirred, the urethane prepolymer undergoes a polymerization reaction and a polyurethane linkage grows, and the water in the asphalt emulsion and the 16 isocyanate group in the urethane prepolymer are combined. reacts as described below to generate carbon dioxide gas, resulting in a foaming action.
−Ｎ＝Ｃ＝０＋Ｈ，Ｏ→−ＮＨ２＋ＣＯ２そして、上記
生成した炭酸ガスによる発泡作用と攪拌による機械的な
混合操作によりアスファルト粒子は全体に均一に分散さ
れるから均一な品質が得られ、またアスファルト自体が
発泡体基体を構成しているから、これが基体から分離し
て品質の劣化を生じることがなく、優れた耐久性を有し
ている。-N=C=0+H, O→-NH2+CO2 Then, asphalt particles are uniformly dispersed throughout by the foaming action of the carbon dioxide gas generated above and the mechanical mixing operation by stirring, resulting in uniform quality. Since the foam itself constitutes a foam base, it does not separate from the base and cause quality deterioration, and has excellent durability.
出願人が４二記第二の製造方法の研究を開始した心で
その主な興味は目地材としてのアスファルト発泡体にあ
った。然し乍ら１その後上記の製造方法で得られたアス
ファルト発泡体について種々の検討を行なった結果、こ
の発泡体はアスファルト成分の多い気泡構造を有してお
り、優れた吸音性や遮音性を有していることが見出され
た。このため、上記の製造方法で得られたアスファルト
発泡体は自動車のフロア材やダッシュパネルとして好適
に用いることができ、現在ではこの方面での研究が活発
に続けられている。When the applicant started research on the second manufacturing method in Section 42, his main interest was in asphalt foam as a joint material. However, as a result of various studies conducted on the asphalt foam obtained by the above-mentioned manufacturing method, it was found that this foam has a cellular structure with a high asphalt component and has excellent sound absorption and insulation properties. It was found that there were. Therefore, the asphalt foam obtained by the above manufacturing method can be suitably used for automobile floor materials and dash panels, and research in this field is currently being actively continued.
上記第二の方法ではアスファルトの水性エマルジョンを
用いているから、製造直後のアスファルト発泡体にはか
なりの水が含まれている。このため水分が蒸発するに伴
って徐々に収縮する。従って、製品の寸法安定性を確保
するために、出荷前に乾燥工程を実施しなければならな
い問題があった。。Since the second method uses an aqueous asphalt emulsion, the asphalt foam contains a considerable amount of water immediately after production. Therefore, it gradually contracts as the water evaporates. Therefore, in order to ensure the dimensional stability of the product, a drying process must be performed before shipping. .
また、」二足第二の方法ではウレタンプレポリで−と水
との発泡反応（プレポリマー法）を用いており、プレポ
リマー製造工程を別途必要とするため工程が煩雑になる
問題があった。In addition, the second method uses a foaming reaction between urethane prepoly and water (prepolymer method), which requires a separate prepolymer manufacturing process, making the process complicated. .
本発明は上記問題を解決することができる新しいアスフ
ァルト発泡体シートの製造方法を提供しようとするもの
どある。The present invention seeks to provide a new method for manufacturing asphalt foam sheets that can solve the above problems.
本発明ではアスファルトを水性エマルジョンとして添加
するのではなく、常温でポリオール成分に相溶させて添
加すると同時に、発泡に必要な量の水を別途添加してワ
ンショット法で発泡させることとした。In the present invention, asphalt is not added as an aqueous emulsion, but is added as a compatible solution to the polyol component at room temperature, and at the same time, the amount of water necessary for foaming is separately added and foamed using a one-shot method.
即ち、本発明によるアスファルト発泡体の製造方法は、
ポリオール化合物とアスファルトとを常温で相溶させた
混合液、アミン触媒、錫触媒、発泡剤としての水、有機
イソシアネート化合物および必要に応じて充填材その他
の添加物を混合攪拌し、ワンショット法により発泡キュ
アーさせることを特徴とするものである。That is, the method for producing asphalt foam according to the present invention includes:
A mixed solution of a polyol compound and asphalt at room temperature, an amine catalyst, a tin catalyst, water as a blowing agent, an organic isocyanate compound, and fillers and other additives as necessary are mixed and stirred, and then processed by a one-shot method. It is characterized by foaming and curing.
本発明における有機イソシアネート化合物としｆｌｊ
′１． １１１−−７に ノ ｌｊ、〜、
７！ Ｌ ｒ ＴｎＴ ）
Ｓ；−ぐイ（ニルメタンジイソシアネートＣＭＤＩ）、
ポリメリックＭＤＩ（粗製ＭＩ）Ｉ）、１．５−ナフタ
レンジイソシアネート等が用いられる。The organic isocyanate compound in the present invention flj
'1. 111--7 ノ lj, ~,
7! L r TnT)
S;-gui (nylmethane diisocyanate CMDI),
Polymeric MDI (crude MI), 1,5-naphthalene diisocyanate, etc. are used.
本発明におけるアスファルトとしては、ブローンアスフ
ァルト又はストレートアスファルト等を用いることがで
きるゆ
本発明におけるポリオール化合物は一般的に２官能、３
官槍、４官能または多官能のボエーテルボリオールまた
はポリエステルポリオールである。このようなポリオー
ルはプロピレンオキサイド含有率１００％、或いはプロ
ピレンオキサイド及びエチレンオキサイドの付加重合に
より得られる。As the asphalt in the present invention, blown asphalt or straight asphalt can be used. Generally, the polyol compound in the present invention is difunctional, trifunctional, etc.
These are trifunctional, tetrafunctional or polyfunctional boether polyols or polyester polyols. Such polyols have a propylene oxide content of 100% or can be obtained by addition polymerization of propylene oxide and ethylene oxide.
本発明においては、通常のポリエーテルポリオール（分
子量略１０００〜１５０００で、好ましくは１５００〜
５０００）とアスファルトとを界面活性剤、錫触媒等の
介在により程合液とする。アスファルトの比率は、ポリ
オール１．０ ［置部に対して０．５〜０．７５屯賃部
程度がよい、０．５重量部未満ではアスファルト含有贋
が少な過ぎて特性が低下する。また、０．７５重量部よ
り多いと液の粘度が高くなり過ぎる。混合液の粘度が高
過ぎる場合には、通常のポリオールを添加し、粘度を低
下させて使用してもよい。In the present invention, ordinary polyether polyols (with a molecular weight of approximately 1000 to 15000, preferably 1500 to 15000) are used.
5,000) and asphalt are mixed together using a surfactant, a tin catalyst, etc. The ratio of asphalt is preferably about 0.5 to 0.75 parts by weight to 1.0 parts by weight of polyol; if it is less than 0.5 parts by weight, the asphalt content will be too small and the properties will deteriorate. On the other hand, if the amount is more than 0.75 parts by weight, the viscosity of the liquid becomes too high. If the viscosity of the liquid mixture is too high, a normal polyol may be added to lower the viscosity before use.
本発明において、木は発泡剤として添加するものである
。その添加量は、前記アスファルトどポリオール化合物
との混合液１００重量部に対してＩ、０〜６．０重量部
程度がよい。In the present invention, wood is added as a foaming agent. The amount added is preferably about 0 to 6.0 parts by weight per 100 parts by weight of the mixture with the asphalt or other polyol compound.
本発明におけるアミン触媒としては、トリエチレンジア
ミン、トリメチルアミン、トリエタノールアミン、ｎ−
エチルモルホリン等を用いることができる。The amine catalyst in the present invention includes triethylenediamine, trimethylamine, triethanolamine, n-
Ethylmorpholine and the like can be used.
また、本発明における錫触媒としては、スターナスオク
トエ−１・、ジブチルチンジラウレート等を用いること
ができる。Further, as the tin catalyst in the present invention, Starnas octo-1., dibutyltin dilaurate, etc. can be used.
本発明において、アスファルトを常温で液状を保つよう
に相溶させたポリオール化合物、有機イソシアネート化
合物、水その他の原料を混合攪拌すると、有機イソシア
ネート化合物およびポリオール化合物が反応してポリウ
レタン鎖が成長すると同時に、有機イソシアネート化合
物の一部と水とが下記のように反応し、生成した炭酸ガ
スによって発泡が行なわれる。In the present invention, when asphalt is mixed and stirred with a polyol compound, an organic isocyanate compound, water, and other raw materials so as to maintain a liquid state at room temperature, the organic isocyanate compound and the polyol compound react, and at the same time, polyurethane chains grow. A portion of the organic isocyanate compound and water react as described below, and the generated carbon dioxide gas causes foaming.
−Ｎ＝Ｃ＝Ｏ＋Ｈ２０→−ＮＨ、＋ＣＯ。-N=C=O+H20→-NH, +CO.
この発泡反応はワンショット法によるポリウレタンフォ
ームの製造方法におけると全く同じで、その結果アスフ
ァルトを含む発泡体が得られる。This foaming reaction is exactly the same as in the one-shot method for producing polyurethane foam, resulting in a foam containing asphalt.
」−記のように、本発明ではワンショット法による発泡
法を用いているため、プレポリマー法にるよう従来の製
造方法と異なり、プレポリマーを製造するための工程が
不要で、製造工程を大幅に簡素化することができる。” - As the present invention uses a one-shot foaming method, unlike conventional manufacturing methods such as the prepolymer method, there is no need for a step to manufacture a prepolymer, and the manufacturing process can be simplified. It can be greatly simplified.
また、従来の製造方法ではアスファルトの水性エマルジ
ョンを用いることで発泡反応に必要な水を添加していた
から、不可避的に過剰の水が導入されざるを得なかった
。これに対し１本発明の場合には発泡に必要な水を別途
添加しているから、過剰量の水が製品中に導入されるの
を回避することができる。従って、得られた発泡体は従
来品に比較して水の含有量が著しく少ない〈、特別に乾
燥工程を行なわなくても優れた寸法安定性を有している
。In addition, in the conventional production method, water necessary for the foaming reaction was added by using an aqueous asphalt emulsion, which inevitably led to the introduction of excessive water. On the other hand, in the case of the present invention, water necessary for foaming is added separately, so it is possible to avoid introducing an excessive amount of water into the product. Therefore, the obtained foam has a significantly lower water content than conventional products and has excellent dimensional stability even without a special drying step.
以下に本発明の一実施例を説明する。 An embodiment of the present invention will be described below.
まず、ポリエーテルポリオール（分子量３０００゜３官
能、 ＯＨ価５６）とアスファルトを相溶させ、アスフ
ァルト分６５％の混合液を調製した。次に、この混合液
を用いて下記の処方によりワンショー／ ）法で発泡さ
せた。First, polyether polyol (molecular weight: 3000°, trifunctional, OH value: 56) and asphalt were made to be compatible with each other to prepare a mixed solution with an asphalt content of 65%. Next, using this mixed solution, foaming was performed using the Wanshaw/ ) method according to the following formulation.
Ｌ粍父直１」
ポリオール／アスファルト混合液 １００ 重量部ポ
リエーテルポリオール ３０／ｌ（分子量３
０００．３官脂、 ＤＨ価５６）トリエチレンジアミン
０．２５ Ｎノルマルエチルモルホリン
０．４〃ジブチルチンジラウレート０．２５
／／シリコーン油 Ｑ、５ ／
／Ｈ２０〕、５／／
トリレンジイソシアネート ２３．０ ／／
こうして密度１２ｋｇ／ ｍ ’のアスファルト発泡体
が得られた。このアスファルト発泡体は、従来品と同程
度の優れた吸音性および遮音性を具備していた。また、
厚さＬｏｗ■にスライスしたものを１２０℃で６０分加
熱して乾燥したところ、殆ど収縮を起さず、優れた寸法
安定性を有していた。Polyol/asphalt mixture 100 parts by weight Polyether polyol 30/l (molecular weight 3
000.3 Official fat, DH value 56) Triethylenediamine 0.25 N normal ethylmorpholine 0.4 Dibutyltin dilaurate 0.25
//Silicone oil Q, 5/
/H20], 5// Tolylene diisocyanate 23.0 //
An asphalt foam with a density of 12 kg/m' was thus obtained. This asphalt foam had excellent sound absorption and sound insulation properties comparable to those of conventional products. Also,
When sliced to a thickness of Low ■ and dried by heating at 120° C. for 60 minutes, it showed almost no shrinkage and had excellent dimensional stability.
以上詳述したように、本発明によれば従来の方法と同様
に優れた特性を有し、且つ寸法安定性に優れたアスファ
ルト発泡体を簡易なワンショット法によって製造するこ
とができる等、顕著な効果が得られるものである。As detailed above, according to the present invention, it is possible to produce an asphalt foam with excellent characteristics and excellent dimensional stability by a simple one-shot method, etc., as with conventional methods. It is possible to obtain the following effects.
Claims (1)
ように相溶させた混合液、アミン触媒、錫触媒、発泡剤
としての水、有機イソシアネート化合物および必要に応
じて充填材その他の添加物を混合攪拌し、ワンショット
法により発泡キュアーさせることを特徴とするアスファ
ルト発泡体の製造方法。A mixed solution of a polyol compound and asphalt that is kept liquid at room temperature, an amine catalyst, a tin catalyst, water as a blowing agent, an organic isocyanate compound, and fillers and other additives as necessary are mixed and stirred. , a method for producing asphalt foam, characterized by foaming and curing by a one-shot method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1304586A JPS62172039A (en) | 1986-01-24 | 1986-01-24 | Production of asphalt foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1304586A JPS62172039A (en) | 1986-01-24 | 1986-01-24 | Production of asphalt foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62172039A true JPS62172039A (en) | 1987-07-29 |
Family
ID=11822144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1304586A Pending JPS62172039A (en) | 1986-01-24 | 1986-01-24 | Production of asphalt foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62172039A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0787069A1 (en) * | 1994-10-20 | 1997-08-06 | Thagard, George F. III | Asphaltic foam |
| AU2002342235B2 (en) * | 2001-05-17 | 2007-07-19 | Evonik Goldschmidt Gmbh | Method for producing foam bitumen with improved foam stability and improved foam volume |
| EP2385079A1 (en) | 2010-04-13 | 2011-11-09 | Sekisui Alveo AG | Bitumen polyolefin foam and its production |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5477696A (en) * | 1977-12-03 | 1979-06-21 | Nhk Spring Co Ltd | Production of urethane foamed body |
-
1986
- 1986-01-24 JP JP1304586A patent/JPS62172039A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5477696A (en) * | 1977-12-03 | 1979-06-21 | Nhk Spring Co Ltd | Production of urethane foamed body |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0787069A1 (en) * | 1994-10-20 | 1997-08-06 | Thagard, George F. III | Asphaltic foam |
| EP0787069A4 (en) * | 1994-10-20 | 1998-11-11 | George F Thagard Iii | Asphaltic foam |
| AU2002342235B2 (en) * | 2001-05-17 | 2007-07-19 | Evonik Goldschmidt Gmbh | Method for producing foam bitumen with improved foam stability and improved foam volume |
| EP2385079A1 (en) | 2010-04-13 | 2011-11-09 | Sekisui Alveo AG | Bitumen polyolefin foam and its production |
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