DE8704117U1 - Sound-insulating surface element for application to vibrating surfaces, preferably in motor vehicles - Google Patents
Sound-insulating surface element for application to vibrating surfaces, preferably in motor vehiclesInfo
- Publication number
- DE8704117U1 DE8704117U1 DE8704117U DE8704117U DE8704117U1 DE 8704117 U1 DE8704117 U1 DE 8704117U1 DE 8704117 U DE8704117 U DE 8704117U DE 8704117 U DE8704117 U DE 8704117U DE 8704117 U1 DE8704117 U1 DE 8704117U1
- Authority
- DE
- Germany
- Prior art keywords
- gwt
- sound
- surface element
- self
- insulating surface
- 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.)
- Expired
Links
- 239000006260 foam Substances 0.000 claims description 22
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 12
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229920005862 polyol Polymers 0.000 claims description 6
- 150000003077 polyols Chemical class 0.000 claims description 6
- 150000003512 tertiary amines Chemical class 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004359 castor oil Substances 0.000 claims description 4
- 235000019438 castor oil Nutrition 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- -1 styrene aryl nitrile Chemical class 0.000 claims description 4
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- 239000003981 vehicle Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 2
- 239000002318 adhesion promoter Substances 0.000 claims description 2
- 238000004132 cross linking Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 claims description 2
- 244000309464 bull Species 0.000 claims 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims 1
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 239000003077 lignite Substances 0.000 claims 1
- 150000002825 nitriles Chemical class 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
Landscapes
- Polyurethanes Or Polyureas (AREA)
Description
PJ-1GMPJ-1GM
Die Neuerung betrifft ein Schallisolierendes Flächenelement zum Aufbringen auf schwingende Flächen, vorzugsweise in Kraftfahrzeugen, das zur vollflächigen Anlage an der zu dämpfenden bzw. dämmenden Fläche geeignet ist. 5The innovation concerns a sound-insulating surface element for application to vibrating surfaces, preferably in motor vehicles, which is suitable for full-surface application to the surface to be dampened or insulated. 5
Es sind Dämpfungselemente bekannt (z.B. Mehrschichtenmaterialien), die aus einer oder mehreren Schichten eines spezifisch schweren Kunststoffes bestehen, welche zwischen zwei oder mehr Schichten aus weichem Kunststoff, aus Schaumstoff oder Vlies (vorzugsweise mit kontinuierDamping elements are known (e.g. multi-layer materials) which consist of one or more layers of a specifically heavy plastic, which are sandwiched between two or more layers of soft plastic, foam or fleece (preferably with continuous liehen oder partiellen Tränkungen und/oder Füllungen) eingebettet sind und die auf die zu dämpfende Oberfläche aufgtiklebt und während des Durchlaufens des Lackierofens mit dieser Oberfläche verbunden werden. Benutzt wurden hierzu in weitem Umfang auf Grund ihrer einfachen technologischen Handhabbarkeit bituminöse Materialien.bituminous materials are embedded in layers (partial or partial impregnations and/or fillings) and are glued to the surface to be dampened and bonded to this surface while it is passing through the painting oven. Bituminous materials were widely used for this purpose due to their simple technological handling.
Dies hatte den gravierenden Nachteil eines unerwünscht hohen Gewichtes und einer lediglich schmalbandigen akustischen Wirksamkeit. Das auf Grund der Materialeigenschaften stark temperaturabhängige Wirksamkeitsoptimum lag im Regelfall bei ca. 10 bis 15 0C. Bei niedrigeren und auchThis had the serious disadvantage of an undesirably high weight and only a narrow-band acoustic effectiveness. The optimum effectiveness, which is strongly temperature-dependent due to the material properties, was usually around 10 to 15 0 C. At lower and also bei höheren Temperaturen wurde der Verlustfaktor Unvertretbar schlecht. Steigende Motorleistungen und die Einführung der Katalysatoren bewirkten im Auspuff- und Unterbodenbereich ein höheres Temperturniveau mit den beschriebenen negativen Folgen. Darüber hinaus sind bituminöse Materialien bei Raumtemperatur steif und führen bei der Montage zuat higher temperatures the loss factor became unacceptably bad. Increasing engine performance and the introduction of catalytic converters resulted in higher temperatures in the exhaust and underbody area with the negative consequences described. In addition, bituminous materials are stiff at room temperature and lead to
Eine weitere Problematik für konventionelle Dämpfungssysteme resultiert aus der Benutzung neuartiger Lacktypen in der Automobilindustrie. DieAnother problem for conventional damping systems results from the use of new types of paint in the automotive industry.
> PJ-IGM > PJ-IGM
bei diesen möglichen rel. niedrigen Temperaturen des Uackieröfens (100 bis 120 0C) führen zwar zu einer durchaus erwünschten Senkung des Energieverbrauchs, das für die akustisch wirksame Funktion der Dämpfungselemente zwingend erforderliche vollflächig haftende Anlegen der \ 5 Dämpfungs-Dämmungssysteme an die schwingende Wand ist Jedoch bei den genannten Temperaturen bei Verwendunu der konventionellen Dämpfungssysteme nicht möglich.At these possible relatively low temperatures of the baking oven (100 to 120 0 C) it is true that a reduction in energy consumption is certainly desirable. However, the full-surface adhesion of the \ 5 damping insulation systems to the vibrating wall, which is absolutely necessary for the acoustically effective function of the damping elements, is not possible at the temperatures mentioned when using conventional damping systems.
Auf das zusätzlich bei bituminösen Matten unvermeidliche Problem der nicht zu verhindernden Staubentwicklung MUß ebenfalls hingewiesen „ werden. So sorgen beim Stänzvorgiing entstehende Staubpartikel, dieThe additional problem of unavoidable dust development, which is unavoidable with bituminous mats, MUST also be pointed out. Dust particles generated during the punching process, which
beispielsweise durch elektrostatische Ladungsorscheinungen in den Lackbereich gelangen, zu Ausgasungerr, zur Porenbildung und zur punktuellen Verringerung der Lackschichtstärke. Eine Störung des Erscheinungsbildes und die Verringerung der Korrosionsbeständigkeit sind die Folge.for example, electrostatic charges that enter the paint area can lead to outgassing, pore formation and a localized reduction in the thickness of the paint layer. The result is a disruption of the appearance and a reduction in corrosion resistance.
Der Erfindung liegt danach die Aufgabe zugrunde, die mit den beschriebenen Nachteilen behafteten bituminöse Materialien durch ein leichtes,The invention is therefore based on the object of replacing the bituminous materials afflicted with the described disadvantages by a light, preiswertes Isolationssystem zu ersetzen, welches unabhängig von Einsatz-, Montage- und Verarbeitungstemperatur eine breitbandige akustische Wirkung besitzt und durch den benutzten PUR-Schaum eine reproduzierbar kraftschlüssig vollflächige Verbindung bei hoher Eigendämpfung ohne Füllstoffe realisiert.inexpensive insulation system, which has a broadband acoustic effect regardless of the application, assembly and processing temperature and, thanks to the PUR foam used, achieves a reproducible, force-fitting full-surface connection with high inherent damping without fillers.
Diese Aufgabe wird durch ein schallisolierendes Flächenelement der eingangs beschriebenen Art dadurch gelöst, daß auf die akustisch ruhigzustellende Fläche eine ohne Verwendung sekundärer Adhäsionsförderer selbsthaftend anliegende Schaumstoffschicht aufgebracht ist, dieThis task is solved by a sound-insulating surface element of the type described above in that a self-adhering foam layer is applied to the surface to be acoustically silenced without the use of secondary adhesion promoters, which einen hohen akustischen Eigenverlustfaktor, überwiegend plastisches Verhalten und eine geringe Rückstellelastizität aufweist und auf die vorzugsweise weitere schalldämmende und/oder -dämpfende Folien, Matten oder Schichten aufgebracht sind. Vorzugsweise enthält die Oberfläche der selbsthaftend anliegenden Schaumstoffschicht aus dem Vernetzungs-has a high acoustic loss factor, predominantly plastic behavior and low resilience and to which preferably further sound-insulating and/or sound-damping films, mats or layers are applied. Preferably, the surface of the self-adhesive foam layer contains cross-linking Vorgang bei der Herstellung stammende nichtpolare Gruppierungen, welche der Kontaktfläche der Schaumstoffschicht eine erhöhte Adhäsion anNon-polar groups originating from the manufacturing process, which the contact surface of the foam layer has increased adhesion to
PJ-IGWPJ-IGW
lackierter und auch an rächt lackierten metallischen Oberflächen vermitteln.painted and also on right-painted metallic surfaces.
In Weiterbildung der Neuerung wird auf die einen hohen akustischen &psgr; Eigenverlustfaktor, überwiegend plastisches Verhalten und eine geringe \· Rückstellelastizität aufweisende selbsthaftend an der akustisch ruhigzustellenden Fläche anliegende Schaumstoffschicht eine auf das jeweilige Störspektrum abgestimmte zweite Schicht, vorzugsweise mit Füll- §i stoffen angereichert oder einen geringen St^ömungwiderstand aufweisend, 1* aufgebracht. Weitere akustisch wirksame Schichten können abhängig von f den jeweiligen örtlichen Gegebenheiten folgen.In a further development of the innovation, a second layer tailored to the respective interference spectrum, preferably enriched with fillers or having a low flow resistance, is applied to the foam layer which has a high acoustic loss factor, predominantly plastic behavior and a low resilience and which adheres self-adhering to the surface to be acoustically immobilized. Other acoustically effective layers can follow depending on the respective local conditions.
Die neuerungsgemäße selbsthaftend anliegende, einen hohen akustischen Eigenverlustfaktor, überwiegend plastisches Verhalten und eine geringe Rückstelielastizität aufweisende Schaumstoffschicht ist bei einer bevorzugten Ausführungsform aus einem aus zwei Komponenten, nämlich: §The innovative self-adhesive foam layer, which has a high acoustic loss factor, predominantly plastic behavior and low recovery elasticity, is made of two components in a preferred embodiment, namely: §
&Agr;-Komponente: &iacgr;α-component: �iacgr;
60-90 GWT Polyätherpolyol mit einem MG von 4500 -6000 und einer OH- |60-90 GWT polyether polyol with a MW of 4500 -6000 and an OH- |
Zahl von 28-35. &iacgr; Number of 28-35. &iacgr;
5-35 GWT eines Rhizinusöles5-35 GWT of castor oil
0- 4 GWT eines Polyäthylenglykols, MG 200-600, oder eines Propy-0- 4 GWT of a polyethylene glycol, MG 200-600, or a propyl-
lenglykols, GM 400-2000
0- 5 GWT eines Katalysators auf der Basis tertiärer Amine und/oder Mischungen daraus,
1-3 GWT Wasser,lenglycol, GM 400-2000
0- 5 GWT of a catalyst based on tertiary amines and/or mixtures thereof,
1-3 GWT water,
0-10 GWT Monofluortrichlormethan;0-10 GWT monofluorotrichloromethane;
B-Komponente &igr; ,B component &igr; ,
4.4 Diphenylmethandiisocyanat (MDI), Funktionalität zwischen
2,0 - 2,7. Kennzahl 80 - 100.
aufgebauten Schaumstoff hergestellt. < 4.4 Diphenylmethane diisocyanate (MDI), functionality between 2.0 - 2.7. Index number 80 - 100.
constructed foam. <
Abhängig von dem Jeweils zu lösenden Anwendungsfall kann die selbsthaftend anliegende« einen hohen akustischen Eigenverlustfaktor, Überwiegend plastisches Verhalten und eine geringe Rüäkstellelastiz.ität aufweisende Schaumstöffschicht vorteilhaft auch aus einem aus den folgenden zwei Komponenten &igr;Depending on the particular application to be solved, the self-adhesive foam layer, which has a high acoustic loss factor, predominantly plastic behavior and low recovery elasticity, can advantageously also be made from one of the following two components:
PJ-IGMPJ-IGM
&Agr;-Komponente:α-component:
60-90 GWT Copolymerpolyole auf Basis Styrol Aryl Nitril (SAN) mit60-90 GWT copolymer polyols based on styrene aryl nitrile (SAN) with
einem Polymergehalt zwischen 10 und 30%.
5-35 GWT eines Rhizinusöles
0-4 GWT eines Polyäthylenglykols, MG 200-600,a polymer content between 10 and 30%.
5-35 GWT of castor oil
0-4 GWT of a polyethylene glycol, MG 200-600,
oder eines Propylenglykols, MG 400-2000
0- 5 GWT eines Katalysators auf der Basis tertiärer Amine und/oderor propylene glycol, MG 400-2000
0- 5 GWT of a catalyst based on tertiary amines and/or
Mischungen daraus
1-3 GWT Wasser
0-10 GWT MonofluortrichlormethanMixtures thereof
1-3 GWT water
0-10 GWT monofluorotrichloromethane
B-Komponente: 4.4 Diphenylmethandiisocyanat (MDI). FunktionalitätB component: 4.4 Diphenylmethane diisocyanate (MDI). Functionality
zwischen 2,0 - 2,7. Kennzahl 80 - 100.between 2.0 - 2.7. Index 80 - 100.
aufgebauten Schaumstoff oder auch aus einem aus den folgenden zwei Komponenten:
A-Konr.ponente:foam or one of the following two components:
A-component:
60-9C GWT Copolymerpolyole auf Basis Styrol Acryl Nitril
(SAN) mit einem Polymergehalt zwischen 10 und 30%.
5-35 GWT difunktionelle Polyäthylen- oder Polypropylenglykole mit einem MG von mehr als 4000.
0- 4 GWT eines Polyäthylenglykols, MG 200-600,60-9C GWT copolymer polyols based on styrene acryl nitrile
(SAN) with a polymer content between 10 and 30%.
5-35 GWT difunctional polyethylene or polypropylene glycols with a MW of more than 4000.
0- 4 GWT of a polyethylene glycol, MG 200-600,
oder eines Propylenglykols, MG 400-2000
0- 5 GWT eines Katalysators auf der Basis tertiärer Amineor propylene glycol, MG 400-2000
0- 5 GWT of a tertiary amine based catalyst
und/oder Mischungen daraus;and/or mixtures thereof;
B-Komponente: 4.4 Diphenylmethandiisocyanat (MDI).Funktionanalität zwischen 2,0 - 2,7. Kennzahl 80 - 100B component: 4.4 Diphenylmethane diisocyanate (MDI). Functionality between 2.0 - 2.7. Index 80 - 100
aufgebauten Schaumstoff hergestellt sein.constructed foam.
Dis neuerungsgemäße schallisolierende Flächenelement hat sich als hervorragende, dazu preiswerte und einfach zu verarbeitende Lösung der gestellten Aufgabe erwiesen.The innovative sound-insulating surface element has proven to be an excellent, inexpensive and easy-to-use solution to the task at hand.
Die beigegebene Zeichnung zeigt einen Querschnitt durch ein neuerungsgemäßes Flächenelement. Auf die akustisch ruhigzustellende Fläche 1, beispielsweise die Spritzwand zwischen Motorraum Urtd Fahrzeugkabine, ist das neuerungsgemäße schallisolierende Flächenelement 2 durch einfaches Andrücken seiner selbsthaftenden Oberfläche 3 an die Fläche 1The attached drawing shows a cross-section through a surface element according to the innovation. The sound-insulating surface element 2 according to the innovation is attached to the surface 1 to be acoustically silenced, for example the bulkhead between the engine compartment and the vehicle cabin, by simply pressing its self-adhesive surface 3 onto the surface 1.
PJ-IGMPJ-IGM
aufgebracht. Infolge der besonderen Eigenschaften des Schaumstoffes, aus dem die Schaumstoffschicht 2 des neuerungsgemäßen schallisolierenden Flächenelementes 2-4 besteht, ist die Verbindung mit der Fläche 1 ganzflächig gleichmäßig und dauerhaft und kann auch mechanische Beanspruchungen ohne große Schwierigkeiten aushalten.applied. Due to the special properties of the foam, from which the foam layer 2 of the new sound-insulating surface element 2-4 is made, the connection with the surface 1 is uniform and permanent across the entire surface and can also withstand mechanical stress without great difficulty.
Il &igr; &igr; It IIl &igr; &igr; It I
11 ··
I) Il 11 ··
I) II
Claims (1)
; die Oberfläche (3) der selbsthcftend anliegenden Schaumstoff- characterized,
; the surface (3) of the self-adhering foam
20 dadurch gekennzeichnet, Expectations,
20 characterized by
25 A-Komponente:that the self-adhesive foam layer (2) having a high acoustic loss factor, predominantly plastic behaviour and low resilience consists of two components, namely:
25 A component:
5-35 GWT eines Rhizinusölö-?an OH number of 28-35.
5-35 GWT of a castor oil oil?
30 oder eines Propylenglykols, MG 400-20000- 4 GWT of a polyethylene glycol, MG ''00-60O,
30 or propylene glycol, MG 400-2000
1-3 GWT Wasser,
sä 0-10 GWT Monofluortrichlormethan;and/or mixtures thereof,
1-3 GWT water,
sä 0-10 GWT monofluorotrichloromethane;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8704117U DE8704117U1 (en) | 1987-03-22 | 1987-03-22 | Sound-insulating surface element for application to vibrating surfaces, preferably in motor vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8704117U DE8704117U1 (en) | 1987-03-22 | 1987-03-22 | Sound-insulating surface element for application to vibrating surfaces, preferably in motor vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE8704117U1 true DE8704117U1 (en) | 1988-01-14 |
Family
ID=6806053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8704117U Expired DE8704117U1 (en) | 1987-03-22 | 1987-03-22 | Sound-insulating surface element for application to vibrating surfaces, preferably in motor vehicles |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE8704117U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4214757A1 (en) * | 1992-05-09 | 1993-11-11 | Helmut Pelzer | Damping mat |
-
1987
- 1987-03-22 DE DE8704117U patent/DE8704117U1/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4214757A1 (en) * | 1992-05-09 | 1993-11-11 | Helmut Pelzer | Damping mat |
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