US20050133155A1 - Adhesive and its use - Google Patents

Adhesive and its use Download PDF

Info

Publication number
US20050133155A1
US20050133155A1 US10/960,269 US96026904A US2005133155A1 US 20050133155 A1 US20050133155 A1 US 20050133155A1 US 96026904 A US96026904 A US 96026904A US 2005133155 A1 US2005133155 A1 US 2005133155A1
Authority
US
United States
Prior art keywords
adhesive composition
film
polymer combination
polymer
composition according
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.)
Abandoned
Application number
US10/960,269
Other languages
English (en)
Inventor
Herbert Leder
Elvira Hammer-Wolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Belland AG
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to BELLAND AKTIENGESELLSCHAFT reassignment BELLAND AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEDER, HERBERT, WOLF, ELVIRA HAMMER
Publication of US20050133155A1 publication Critical patent/US20050133155A1/en
Priority to US11/906,250 priority Critical patent/US7648609B2/en
Abandoned legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
    • C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/062—Copolymers with monomers not covered by C08L33/06
    • C08L33/068—Copolymers with monomers not covered by C08L33/06 containing glycidyl groups

Definitions

  • the invention relates to an adhesive based on a polymer which can be made tacky in conjunction with aqueous moisture, and to its use.
  • Industrial products having self-adhesive properties are sufficiently well known from everyday use; examples are the wide variety of kinds of sheets and adhesive tapes, used in the packaging, construction or furniture sector and in the metal, glass and automotive industries, among others, or else office products such as adhesive strips, sticky labels or sticky notes. Common to these products is the fact that for bonding to various substrates they are coated with adhesive on one side or else, according to their specific application, on both sides.
  • tacky sheets without an adhesive coating based on ethylene-vinyl acetate (EVA) or unplasticized polyvinyl chloride (PVC-u) and low-density polyethylenes (LDPE) with corresponding tackifiers, is also known.
  • EVA ethylene-vinyl acetate
  • PVC-u unplasticized polyvinyl chloride
  • LDPE low-density polyethylenes
  • the invention provides for the use of a two-phase polymer combination which is dissoluble in aqueous alkali and comprises
  • this polymer combination in the moist state is able to form an adhesive bond not only to smooth surfaces but also to textured surfaces, as for example to glass, metal surfaces, plastics, nonwovens, woven fabrics, paints, paper or else to films of the same kind.
  • the bond formed exhibits an extremely high strength with respect to mechanical forces, after drying, even to the smooth surfaces.
  • the polymer itself is not tacky.
  • the polymer combination can be made tacky by supplying aqueous moisture to it, but is not dissolved in the process. Products comprising this polymer combination can be bonded without an additional adhesive coating or can themselves act as an adhesive. The disadvantages and restrictions described above do not occur in the case of use in accordance with the invention.
  • the necessary moisture can be supplied in the form of vapour or liquid, in the latter case by direct or indirect application such as spreading, dropping, pouring or spraying or in atomized form via a nozzle. Moistening in the case of a sheet can be carried out on one or both sides, in the latter case, for example, by complete immersion of the sheet material in water.
  • the powder is preferably dispersed in water and applied to the respective substrate, in particular by spraying.
  • Products comprising this polymer combination are stable in acidic and neutral, aqueous media, while in aqueous alkalis it is possible with particular advantage to dissolve the products completely.
  • acidification the polymer combination can be reprecipitated and supplied to a recycling circuit.
  • the invention also relates to a method of bonding articles, or bonding to articles, using the polymer combination.
  • alkali-free aqueous moisture is enough to bring about the desired adhesive effect of the polymer combination.
  • alkaline media it is possible to dissolve the polymer combination on the surface partly or completely; preferably an alkaline medium is not provided for application in accordance with the invention.
  • the bond of the polymer combination to the surfaces of the aforementioned substrates is still sufficient even in a moist environment, provided that no substantial mechanical forces act on the bond. If, however, the bonded polymer combination is wetted with large amounts of water, the bond can be parted again. In this way the polymer combination can be removed without residue, and this constitutes a substantial advantage of application in accordance with the invention.
  • a film of the polymer combination is opaque, which can be achieved by incorporating pigments into the copolymer.
  • a white coloration is obtainable by admixing titanium dioxide.
  • the films are transparent to milky.
  • the films can be covered in places or entirely with at least one colour layer, in particular by printing.
  • Printing inks used are preferably those which are soluble in aqueous alkali and preferably insoluble in a neutral to acidic medium.
  • films comprising the polymer combination can be used, for example, as labels without any need for coating with pressure-sensitive adhesive, such as is necessary, for example, for the labels described in EP 0 316 676 B1.
  • Films comprising the polymer combination can be bonded over their entire area or only in places. They are outstandingly suitable for use as a protective coating or locally bonded protective covering, particularly in the case of the transportation and temporary and long-term storage of goods and products. There is a need for protective coverings and protective coatings in numerous sectors and branches of industry, particularly in the aforementioned transport, construction, sanitary or furniture sector, or else, for example, in the glass, metal or automotive industry.
  • Coatings comprising the polymer combination can be produced either by bonding, in the form of a film, or else by application in the form of a dispersed powder.
  • a further possible field of application for such coatings is that of protection against graffiti. Preference is given here to use for protecting transport means such as railway carriages.
  • the thickness and width of the film are guided by the particular end use, and can be adapted accordingly.
  • the film thickness is generally from 10 ⁇ m to 200 ⁇ m; for protective films, in particular, from 25 ⁇ m to 60 ⁇ m are sufficient.
  • the width can be chosen arbitrarily as a function of production of the film, and is generally between 20 cm and 800 cm, in particular in the range from 50 cm to 120 cm.
  • the polymer combination can also be processed in the form of a hot-melt adhesive, particularly in combination with aqueous bonding. In this case as well a permanent bond is formed to smooth and textured surfaces.
  • a hot-melt adhesive particularly in combination with aqueous bonding.
  • a permanent bond is formed to smooth and textured surfaces.
  • tackifying by supply of aqueous moisture it is possible to use the polymer combination both in the form of a film and in the form of a powder in a multi-stage adhesion process, in which it becomes moist in a first step and in a further step is used for hot bonding.
  • Moist and/or hot bonding of the polymer combination can be employed for the production of composites, particularly in connection with the manufacture of laminates.
  • the polymer combination can on the one hand, as already outlined, be used as a straight adhesive, while on the other hand the bonded polymer acts with particular advantage as an interlayer, particularly as a water-vapour-permeable interlayer.
  • Films and powders comprising the polymer combination described are polar by virtue of the aforementioned free carboxyl groups which are distributed over the whole length of the polymer chain of the continuous phase. This means that they are hydrophilic, and hence possess a high affinity for water. Consequently, depending on hardness and the amount of free carboxyl groups, they are able to absorb water. In doing so, the polymer has incorporated into it water molecules, which act as plasticizers and increase the mobility of the polymer chains. Films and powders become soft and tacky and can in this state be applied to a variety of substrate surfaces. The high polarity of the polymer combination allows a firm bond to the substrates. As a result of the subsequent drying process the plasticizer effect is lost and the original state of the polymer combination is reestablished. Adhesion to the substrate surface, however, is retained.
  • the polymer combination is preferably compounded, as described in EP 0 928 316 B1, in the melt.
  • the hardness and the hydrophilic nature of the two-phase polymer compound can be adjusted by way, inter alia, of the composition of the COOH-containing matrix polymer (cf. Table 1).
  • the fraction of ⁇ , ⁇ -unsaturated carboxylic acids is generally 20-40% by weight, preferably 25-35%.
  • Esters of ⁇ , ⁇ -unsaturated carboxylic acids are present in a fraction of 20-60% by weight, preferably 40-60%, and the fraction of styrene, if present, is 5-50% by weight, in particular 15-25%.
  • the styrene content goes up, for example, there is also a decrease in the water vapour permeability and the water absorbency of the films adjusted accordingly.
  • Matrix polymer 1 2 3 4 Butyl acrylate in % 57.5 52 48 20 Acrylic acid in % 27.5 29 30 33 (methacrylic acid) Styrene in % 15 19 22 47 Carboxyl content in % 16 17 18 18 Tg in ° C. 45 50 61 110
  • the weight ratio of COOH-containing polymer to epoxy-containing impact modifier in the film is from 9:1 to 1:1, in particular from 5:1 to 1.8:1.
  • VLDPE very-low-density polyethylene
  • anti-blocking agents such as silica or talc
  • lubricants such as stearic acid, stearamide or ethylenamines and processing stabilizers from the class of the sterically hindered phenols
  • processing stabilizers from the class of the sterically hindered phenols
  • films A, B and C By moistening with 0.5% strength sodium hydroxide solution it is also possible for films A, B and C to be bonded effectively to aluminium, stationery paper and galvanized steel sheet. The adhesion is unaffected by accelerated drying in a drying cabinet at 40° C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
US10/960,269 2003-10-10 2004-10-07 Adhesive and its use Abandoned US20050133155A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/906,250 US7648609B2 (en) 2003-10-10 2007-10-01 Adhesive and its use

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10348222.9 2003-10-10
DE10348222A DE10348222A1 (de) 2003-10-10 2003-10-10 Klebstoff und seine Verwendung

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/906,250 Division US7648609B2 (en) 2003-10-10 2007-10-01 Adhesive and its use

Publications (1)

Publication Number Publication Date
US20050133155A1 true US20050133155A1 (en) 2005-06-23

Family

ID=34306413

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/960,269 Abandoned US20050133155A1 (en) 2003-10-10 2004-10-07 Adhesive and its use
US11/906,250 Expired - Lifetime US7648609B2 (en) 2003-10-10 2007-10-01 Adhesive and its use

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/906,250 Expired - Lifetime US7648609B2 (en) 2003-10-10 2007-10-01 Adhesive and its use

Country Status (6)

Country Link
US (2) US20050133155A1 (de)
EP (1) EP1522568B1 (de)
JP (1) JP4815632B2 (de)
KR (1) KR20050035084A (de)
DE (1) DE10348222A1 (de)
ES (1) ES2402927T3 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100096072A1 (en) * 2008-10-17 2010-04-22 Stratasys, Inc. Support material for digital manufacturing systems
US20100101566A1 (en) * 2007-02-27 2010-04-29 Ivax Pharmaceuticals Ireland Metered-dose inhaler
US20100270707A1 (en) * 1999-04-20 2010-10-28 Stratasys, Inc. Souluble material and process for three-dimensional modeling
US20110186081A1 (en) * 2010-01-05 2011-08-04 Stratasys, Inc. Support cleaning system
USD682490S1 (en) 2011-01-05 2013-05-14 Stratasys, Inc. Support cleaning system
US8460755B2 (en) 2011-04-07 2013-06-11 Stratasys, Inc. Extrusion-based additive manufacturing process with part annealing
US8459280B2 (en) 2011-09-23 2013-06-11 Stratasys, Inc. Support structure removal system
US9714318B2 (en) 2013-07-26 2017-07-25 Stratasys, Inc. Polyglycolic acid support material for additive manufacturing systems
US10059053B2 (en) 2014-11-04 2018-08-28 Stratasys, Inc. Break-away support material for additive manufacturing

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8920697B2 (en) 2010-09-17 2014-12-30 Stratasys, Inc. Method for building three-dimensional objects in extrusion-based additive manufacturing systems using core-shell consumable filaments
CA2809278C (en) 2010-09-17 2015-10-20 Stratasys, Inc. Semi-crystalline consumable materials for use in extrusion-based additive manufacturing systems
US9592530B2 (en) 2012-11-21 2017-03-14 Stratasys, Inc. Additive manufacturing with polyamide consumable materials
US9744722B2 (en) 2012-11-21 2017-08-29 Stratasys, Inc. Additive manufacturing with polyamide consumable materials
US9527242B2 (en) 2012-11-21 2016-12-27 Stratasys, Inc. Method for printing three-dimensional parts wtih crystallization kinetics control
US12064917B2 (en) 2012-11-21 2024-08-20 Stratasys, Inc. Method for printing three-dimensional parts with cyrstallization kinetics control
US9523934B2 (en) 2013-07-17 2016-12-20 Stratasys, Inc. Engineering-grade consumable materials for electrophotography-based additive manufacturing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5863885A (en) * 1996-10-24 1999-01-26 Diversey Lever, Inc. Pack containing a dry alkaline solid
US5869568A (en) * 1996-12-05 1999-02-09 National Starch And Chemical Investment Holding Corporation One-part cold crosslinking emulsion composition and method of manufacturing the same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288493A (en) 1979-07-16 1981-09-08 Minnesota Mining And Manufacturing Company Water-activatable crosslinked adhesive and energy control film made therewith
DE3000516A1 (de) 1980-01-09 1981-07-16 Roland Dipl.-Kfm. 7022 Leinfelden-Echterdingen Belz Verbundfolie, insbesondere toilettensitzauflage, sowie verfahren und vorrichtung zu ihrer herstellung
DE3335954A1 (de) 1983-10-04 1985-04-04 Roland Dipl.-Kaufm. 7022 Leinfelden-Echterdingen Belz Verfahren zur durchfuehrung von chemischen reaktionen, insbesondere zur herstellung von kunststoffen mit hilfe von extrudern und anlage hierzu
DE3738786A1 (de) * 1987-11-14 1989-05-24 Belland Ag Im waessrigem alkali aufloesbare klebefolie, wie etikett und dgl.
ES2068911T3 (es) * 1988-07-28 1995-05-01 Ciba Geigy Ag Combinaciones de flexibilizadores para resinas epoxi.
EP0381625B1 (de) * 1989-02-02 1996-07-31 Ciba-Geigy Ag Zähe Epoxidharze
JPH07286154A (ja) * 1994-04-19 1995-10-31 Dainippon Ink & Chem Inc アルカリ可溶性ホットメルト接着剤
JPH09111217A (ja) * 1995-10-18 1997-04-28 Dainippon Ink & Chem Inc アルカリ可溶性ホットメルト接着剤粉末及びその製造方法
JP2000516290A (ja) 1996-08-21 2000-12-05 イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー 高火炎強度のポリ（ｐ―フェニレンテレフタルアミド）
DE19639347A1 (de) * 1996-09-25 1998-03-26 Belland Ag Zweiphasige, in wäßrigem Alkali auflösbare Polymerkombination und Verfahren zu ihrer Herstellung
JP2000080211A (ja) * 1998-07-01 2000-03-21 Mitsui Chemicals Inc 水性分散体組成物及びその製造方法
JP2000080235A (ja) * 1998-07-01 2000-03-21 Mitsui Chemicals Inc 水性分散体組成物及びその製造法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5863885A (en) * 1996-10-24 1999-01-26 Diversey Lever, Inc. Pack containing a dry alkaline solid
US5869568A (en) * 1996-12-05 1999-02-09 National Starch And Chemical Investment Holding Corporation One-part cold crosslinking emulsion composition and method of manufacturing the same

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100270707A1 (en) * 1999-04-20 2010-10-28 Stratasys, Inc. Souluble material and process for three-dimensional modeling
US8227540B2 (en) 1999-04-20 2012-07-24 Stratasys, Inc. Soluble material and process for three-dimensional modeling
US20100101566A1 (en) * 2007-02-27 2010-04-29 Ivax Pharmaceuticals Ireland Metered-dose inhaler
US10086155B2 (en) 2007-02-27 2018-10-02 Ivax Pharmaceuticals Ireland Metered-dose inhaler
US20100096072A1 (en) * 2008-10-17 2010-04-22 Stratasys, Inc. Support material for digital manufacturing systems
US8246888B2 (en) 2008-10-17 2012-08-21 Stratasys, Inc. Support material for digital manufacturing systems
US9855589B2 (en) 2010-01-05 2018-01-02 Stratasys, Inc. Support cleaning system
US9592539B2 (en) 2010-01-05 2017-03-14 Stratasys, Inc. Support cleaning system
US20110186081A1 (en) * 2010-01-05 2011-08-04 Stratasys, Inc. Support cleaning system
USD682490S1 (en) 2011-01-05 2013-05-14 Stratasys, Inc. Support cleaning system
US8460755B2 (en) 2011-04-07 2013-06-11 Stratasys, Inc. Extrusion-based additive manufacturing process with part annealing
US8459280B2 (en) 2011-09-23 2013-06-11 Stratasys, Inc. Support structure removal system
US9283716B2 (en) 2011-09-23 2016-03-15 Statasys, Inc. Support structure removal system
US10016945B2 (en) 2011-09-23 2018-07-10 Stratasys, Inc. Support structure removal system
US9714318B2 (en) 2013-07-26 2017-07-25 Stratasys, Inc. Polyglycolic acid support material for additive manufacturing systems
US10059053B2 (en) 2014-11-04 2018-08-28 Stratasys, Inc. Break-away support material for additive manufacturing
US11046014B2 (en) 2014-11-04 2021-06-29 Stratasys, Inc. Break-away support material for additive manufacturing

Also Published As

Publication number Publication date
EP1522568A3 (de) 2006-01-25
JP2005113139A (ja) 2005-04-28
JP4815632B2 (ja) 2011-11-16
EP1522568B1 (de) 2013-01-30
ES2402927T3 (es) 2013-05-10
US7648609B2 (en) 2010-01-19
DE10348222A1 (de) 2005-05-04
US20080029216A1 (en) 2008-02-07
EP1522568A2 (de) 2005-04-13
KR20050035084A (ko) 2005-04-15

Similar Documents

Publication Publication Date Title
US7648609B2 (en) Adhesive and its use
EP3240848B1 (de) Wasseraktivierte trennschichtlose klebartikel und entsprechendes verfahren
US10611928B2 (en) Aqueous dispersions comprising polyurethane and ethylenic copolymers for heat sealable coatings
EP2798026B1 (de) Lösungaktivierbare mehrschichtige klebstoffzusammensetzungen für trägerbandlose etiketten und aktivierungsverfahren dafür
CN108084929B (zh) 用于清澈对清澈标签的热熔压敏粘合剂
US9508272B2 (en) Fluid activatable adhesives for glue-free, liner-free labels for glass and plastic substrates and methods of use thereof
CN108136725B (zh) 用于标签的粘合剂，标签和标签层叠体
CN106471078B (zh) 可洗去标签、可洗去标签与物品的组合
US6706392B2 (en) Adhesive packaging tape
EP2683546A1 (de) Beschichtungsnetz
JPS58222170A (ja) 合成樹脂板用表面保護材
JPH06136337A (ja) 水性積層接着組成物
JP3018868B2 (ja) 高速ラベラー用感熱性粘着シート
JP2005097353A (ja) ディレードタック型粘着剤組成物及び粘着ラベル
US20240059941A1 (en) Acrylic pressure sensitive adhesive composition for food packaging label application
JP5262467B2 (ja) 感熱ラベル
JPH1112548A (ja) 塗膜保護用シート
JP2002023644A (ja) ガラスびん用ラベル
EP3060619A1 (de) Flüssigkeitsaktivierbare klebstoffe und flüssigkeiten zur aktivierung davon zur verwendung mit schutzfolienfreien etiketten
JPS6219452A (ja) 吸水性樹脂裏面層を備えるシ−ト状物
JPH0319876B2 (de)

Legal Events

Date Code Title Description
AS Assignment

Owner name: BELLAND AKTIENGESELLSCHAFT, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEDER, HERBERT;WOLF, ELVIRA HAMMER;REEL/FRAME:016198/0470

Effective date: 20041223

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION