WO1998036019A1 - Verfahren zur modifizierung von produkten oder halbzeugen aus formmassen bestehend aus mischungen thermoplastischer kunststoffe - Google Patents
Verfahren zur modifizierung von produkten oder halbzeugen aus formmassen bestehend aus mischungen thermoplastischer kunststoffe Download PDFInfo
- Publication number
- WO1998036019A1 WO1998036019A1 PCT/EP1998/000586 EP9800586W WO9836019A1 WO 1998036019 A1 WO1998036019 A1 WO 1998036019A1 EP 9800586 W EP9800586 W EP 9800586W WO 9836019 A1 WO9836019 A1 WO 9836019A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- ester
- molding compositions
- amide
- mixtures
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/12—Polyester-amides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
Definitions
- This invention relates to a method for modifying products or semi-finished products made of multi-phase plastic molding compositions.
- the latter are preferably made of
- thermoplastics built up The processes according to the invention are characterized by modification of density and / or surface structure, which are achieved by selective biodegradation of one or more of the polymer resins used for their production.
- the molding compositions are made using mixtures of thermoplastic materials with good biodegradability and those with poor or no biodegradability are obtained.
- the methods of vlodification according to the invention are superior to the methods known from the prior art for removing certain components
- Modified matrix properties are advantageous, for example, if porous membrane structures are to be achieved which optimally have a defined pore structure
- the wrappings known according to the prior art are nowadays particularly welded obtained from possibly deep-drawn, anatomically formed preforms. For this purpose, thicker, thermoplastic formable films are required that do not have the unpleasant handle of a comparatively smooth, glossy film that is typical for plastics
- the task was therefore to adjust the surface of the film to make it pleasant to touch.
- the mattness of the plastic article had to be improved.
- the mat properties should be specifically influenced.
- Processes which are particularly suitable according to the invention for modifying objects and / or semi-finished products made from polymer-resin molding compositions are distinguished in that the partial biodegradation takes place under uniform and defined ambient conditions with regard to temperature, pH value and ambient medium
- the methods according to the invention are based on the at least partial degradation of at least one phase of the plastic objects from multi-phase plastic Mixtures
- biodegradable thermoplastic resins have been used as a recipe component
- Polymer mixtures, blends or blends can be prepared by mechanically mixing melts, latices or solutions of two separately produced polymer resins or m-situ polymerisation of monomers in the presence of a pre-formed polymer resin
- the polymer resins which are usually in the form of bales, granules or powders, are mixed in kneaders or with extruders.
- the thermoplastic polymer resins suitable according to the invention are heated above the glass or melting temperature Good mixing is achieved at higher temperatures and / or under strong shear fields
- the Polvmer resins used for the thermal shaping are subjected to a premixing in a softened state in a compounding step.
- Suitable tools for such a mixing step are suitable the compounding tools known in their type. Tools with several screws, but especially the two-screw kneaders popular for compounding, have proven to be advantageous
- Suitable methods for modifying plastic articles are particularly suitable according to the invention if they have a readily biodegradable thermoplastic resin content of at least 30% by weight and a less biodegradable thermoplastic resin content of at least 15% by weight
- thermoplastic formulation components are particularly preferred as thermoplastic formulation components
- Biodegradable resins or resin mixtures or foils are defined in accordance with DIN ⁇ 4 900 (draft 1996) with regard to their biodegradability
- biodegradable resins which are particularly qualified for the composition of suitable molding compositions come from the group of the ester-amide copolymer resins
- thermoplastic ester-amide copolymers for the inventive
- Mixtures are preferably made of predominantly linear, thermoplastic ester
- A) an ester fraction from linear and / or cycloahphatic bifunctional alcohols for example ethylene glycol, hexanediol or butanediol, preferably butanediol or cyclohexanedimethanol and, if appropriate, small amounts of high-functionality alcohols, for example 1,2,3-propanediol or neopentyl glycol, and also from linear and / or cycloahphatic bifunctional acids, for example succinic acid, adipic acid, cyclohexanedicar bonic acid, preferably adipic acid and additional, if appropriate, small amounts of highly functional acids, for example T ⁇ mellithsaure or
- ester portion from acid- and alcohol-functionalized building blocks for example hydroxybutyric acid or hydroxypropane acid or their derivatives, for example ⁇ -caprolactone
- ester fraction A) and / or B) is at least 30% by weight based on the sum of A), B), C) and D)
- the biodegradable and compostable polyester amides preferably have a molecular weight of at least 10,000 g / mol and have a statistical distribution of the starting materials (monomers) in the polymer
- the task was to provide molding materials that were as soft as possible with a pleasant feel and good buildability. This also included inexpensive manufacture and processing
- the object is particularly preferably achieved in that soft-elastic molding compositions are obtained by mixing thermoplastic polyurethanes with polyester amide copolymer resins.
- Thermoplastic polyurethanes are composed of soft and hard segregates, which means that the molding composition can be permanently softened. Molding compositions which have at least one per - Manent soft-modified thermoplastic component with poorer biodegradability
- the thermoplastic polyurethanes have been known for a long time and have a high chemical resistance. Their three basic components are Dnsocvanate short-chain diols - also known as chain extenders - and long-chain diols, the latter contributing to the elastic-soft properties.
- thermoplastic polyurethanes In the case of commercially available thermoplastic polyurethanes, the aim is generally to combine good strength values, ie tensile and tear propagation resistance and great elasticity, ie high elongation and cold flexibility, an overview of the chemical structure, the production and properties and the resulting possible applications of thermoplastic polyurethanes e.g. Goyert and Hespe in Kunststoffe 68 (1978) 819-825 or Hepburn (ed.) in Polyurethane Elastomers, Applied Science Pubhshers, Barking 1982
- thermoplastic polyurethane elastomers for the mixtures according to the invention are preferably composed of predominantly linear thermoplastic polyurethane elastomers, the long-chain diol components of which are made of Polvester or polyether, and which have a Shore hardness of preferably 75-95 A, particularly preferably 85-92 A, determined according to DEN 53 505
- thermoplastic polyurethanes are, for example, under the trade names
- thermoplastic polyurethanes have a molecular weight of at least 10,000 g / mol and have a block-like sequence of hard and soft segment starting materials (monomers) in the polymer resin
- the objects or semifinished products to be modified according to the invention have elastic in the molding compositions which form them Urethane elastomer formulation components on whose soft segment phase are predominantly formed from ester soft segment building blocks
- a particularly preferred object of the present invention is thus the modification of products and / or semi-finished products from molding compositions with soft-elastic behavior, which at least consist of thermoplastically processable polyurethane resins and Polvesteramide resins. Furthermore, the subject matter of this invention can then be seen that the films according to the invention made of resin mixtures have improved biological films made of thermoplastic polyurethanes in comparison with the prior art have
- the polymer resins mixed for this invention already have multiphase structures in themselves, so that in the present invention there is mutual expansion of the network-like structures of the mixing partners must be assumed.
- the mixtures according to the invention can be processed or shaped into molding materials or objects which do not have properties almost represent the corresponding proportional properties of the mixed polymer resins used
- thermoplastic polyurethanes and polyester amide copolymers mix contractually in formulations, ie the properties of the blend components correspond proportionately to those of the pure raw material components used.
- the mechanical strength properties of the resin mixtures according to the invention were not as customary as with incompatible plastics
- Such demixing patterns are observed, for example, for mixtures of thermoplastic polyurethanes with low-density polyurethane resins, for which it is known to the skilled artisan that strengths are observed with these blends, which are below the level at values around 10 N / mm of pure polypropylene, there is also the fact that blends of this type have strongly anisotropic segregation structures in which the different phases are oriented towards processing Form domains
- Objects or semifinished products, in particular foils, which are particularly suitable for the modification according to the invention are distinguished by the fact that they have a readily biodegradable thermoplastic resin fraction, preferably a co-polyester ester amide fraction of at least 30% by weight, and a less biodegradable thermoplastic resin fraction, in particular have polyurethane resin content of at least 15% by weight
- the molding compound contains blends of thermoplastic
- Resins for the production of suitable products and / or semi-finished products which can be modified according to the invention additionally comprise additives customary from the group
- Particularly suitable inorganic additives come from the group comprehensively
- V natural and synthetic silica or silicates also layered silicates
- Preferred semi-finished products according to the invention for the modification process are films made from blends of at least two thermoplastic resins. Before modification, these preferably have a Shore D hardness of less than 55, measured in accordance with DIN 53505
- a method for modifying plastic articles is suitable, wherein at least two of the Polvmer resins used as raw materials for the molding composition were previously subjected to a premixing in a softened state in a compounding step
- a film was produced for which a prefabricated compound was used as the raw material.
- the compound consisted of 82.5% by weight ester-amide copolymer resin with a Shore ⁇ hardness of large ⁇ 15% by weight of a TPU from the Shore -A-Harte 92 with polvbutylene adipate soft segments 1% by weight of silicates and 1% by weight of low molecular weight amide waxes
- the Extrusionsein ⁇ chtung was operated at temperatures between 130 C C and 170 ° C
- the compound melt stream was discharged into a blown film with a processing temperature of 190 ° C by a Ringspaltduse having a diameter of 1 10 mm, the annular melt web was cooled by blowing with air, then laid flat, trimmed in the edge area and wound in the form of 50 around thick single sheets.
- the finishing according to the invention was carried out in a water buffer solution over a period of 60 min. This was heated to 37 ° C.
- the pH was 6 5
- a film was produced analogously to Example A with a thickness of 50 .mu.m.
- the raw materials were brought together shortly before the extruder was drawn in, the composition of the blend being 29% by weight TPU 68 5% by weight ester-amide copolymer resin, 1.5% by weight -% silicate and 1% by weight - waxes is represented.
- the processing parameters corresponded to example A, however the extrusion tool was only operated at temperatures of 130-180 ° C. the melt temperature was 200 ° C.
- the finishing modification according to the invention was carried out analogously to example A.
- a film was produced analogously to Example B in a thickness of 50 ⁇ m.
- the composition of the blend was 58 5% by weight ester-amide copolymer 39 5 % By weight of TPU, 1% by weight of waxes and 1% by weight of silicate lay.
- the finishing modification according to the invention was carried out analogously to Example A.
- a TPU film was produced under the parameters mentioned for Example A.
- the composition of the translucent 50 ⁇ m thick film was 97% by weight of a TPU from Shore-A-Harte 92 with a polyadipate-based soft segment phase and 1% by weight of low molecular weight amide waxes and 2% by weight of silica.
- the processing parameters corresponded to Example B The modification was carried out analogously to Example A
- a 50 ⁇ m thick ester amide copolymer film was made using 98% by weight
- Copolyesteramide with a Shore A hardness of large 95, 1% by weight of silicate and 1% by weight of amide wax was produced.
- the processing parameters corresponded to Example A.
- the modification was carried out analogously to Example A.
- the evaluation of the films produced in the examples and comparative examples was partly carried out with regard to application-relevant properties such as skin / skin friendliness or haptics and biodegradability.
- the evaluation of these relevant properties was obtained by subjective evaluation by several independent persons and the evaluations given in Table 1 as far as possible - The subjective assessments were verified through standardized test procedures
- the haptics were assessed manually on the finished film webs before and after the finishing step.
- the coefficients of friction or numbers were determined in accordance with DIN 53 375.
- the gloss was determined in accordance with DIN 67530 at a measuring angle of 20 °
- the table below shows characteristic data of the films produced in the examples and comparative examples
- the films shown in the examples are the films known from the prior art from the comparative examples, in particular with regard to the controlled biodegradability. are clearly superior to the pure films of ester-amide copolymers as described in Comparative Example 2, the films not yet modified according to the invention do not yet offer advantages in terms of wearing comfort and elasticity
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53528998A JP2001512505A (ja) | 1997-02-17 | 1998-02-04 | 熱可塑性合成材料の混合物で構成させた成形用材料から作られた製品または半製品を修飾する方法 |
EP98908050A EP0960156A1 (de) | 1997-02-17 | 1998-02-04 | Verfahren zur modifizierung von produkten oder halbzeugen aus formmassen bestehend aus mischungen thermoplastischer kunststoffe |
AU66196/98A AU6619698A (en) | 1997-02-17 | 1998-02-04 | Method for modifying products or half-stuffs from molding materials consisting of mixtures of thermoplastic synthetic materials |
US09/367,534 US6251968B1 (en) | 1997-02-17 | 1998-02-04 | Method for modifying products or half-stuffs from molding materials consisting of mixtures of thermoplastic synthetic materials |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19706024A DE19706024A1 (de) | 1997-02-17 | 1997-02-17 | Verfahren zur Modifizierung von Produkten oder Halbzeugen aus Formmassen bestehend aus Mischungen thermoplastischer Kunststoffe |
DE19706024.2 | 1997-02-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998036019A1 true WO1998036019A1 (de) | 1998-08-20 |
Family
ID=7820483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/000586 WO1998036019A1 (de) | 1997-02-17 | 1998-02-04 | Verfahren zur modifizierung von produkten oder halbzeugen aus formmassen bestehend aus mischungen thermoplastischer kunststoffe |
Country Status (6)
Country | Link |
---|---|
US (1) | US6251968B1 (de) |
EP (1) | EP0960156A1 (de) |
JP (1) | JP2001512505A (de) |
AU (1) | AU6619698A (de) |
DE (1) | DE19706024A1 (de) |
WO (1) | WO1998036019A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7309252B2 (en) * | 2005-02-22 | 2007-12-18 | Tyco Electronics Corporation | Low profile surface mount connector |
JP2007106783A (ja) * | 2005-10-11 | 2007-04-26 | Fujitsu Ltd | 樹脂成型体およびこれを用いた電子機器、樹脂成型体の処理方法 |
KR100960402B1 (ko) * | 2005-10-17 | 2010-05-28 | 폴리원 코포레이션 | 열가소성 폴리우레탄 분말 조성물 및 용도 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54119593A (en) * | 1978-03-09 | 1979-09-17 | Agency Of Ind Science & Technol | Biodegradation of copolyester-amide |
JPH05344897A (ja) * | 1992-06-12 | 1993-12-27 | Amano Pharmaceut Co Ltd | 酵素を用いた脂肪族ポリエステルの分解法及び表面処理方法 |
DE19619236A1 (de) * | 1996-05-13 | 1997-11-20 | Bayer Ag | Abbau von biologisch abbaubaren Polyesteramiden mit Enzymen |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR9405651A (pt) * | 1993-01-08 | 1995-11-14 | Novon International Inc | Composição de mistura de polímeros termoplásticos biodegradáveis; processo de preparar a mesma; artigo formado; filme e fibra |
-
1997
- 1997-02-17 DE DE19706024A patent/DE19706024A1/de not_active Withdrawn
-
1998
- 1998-02-04 WO PCT/EP1998/000586 patent/WO1998036019A1/de not_active Application Discontinuation
- 1998-02-04 JP JP53528998A patent/JP2001512505A/ja active Pending
- 1998-02-04 US US09/367,534 patent/US6251968B1/en not_active Expired - Fee Related
- 1998-02-04 AU AU66196/98A patent/AU6619698A/en not_active Abandoned
- 1998-02-04 EP EP98908050A patent/EP0960156A1/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54119593A (en) * | 1978-03-09 | 1979-09-17 | Agency Of Ind Science & Technol | Biodegradation of copolyester-amide |
JPH05344897A (ja) * | 1992-06-12 | 1993-12-27 | Amano Pharmaceut Co Ltd | 酵素を用いた脂肪族ポリエステルの分解法及び表面処理方法 |
DE19619236A1 (de) * | 1996-05-13 | 1997-11-20 | Bayer Ag | Abbau von biologisch abbaubaren Polyesteramiden mit Enzymen |
Non-Patent Citations (2)
Title |
---|
CHEMICAL ABSTRACTS, vol. 121, no. 2, 11 July 1994, Columbus, Ohio, US; abstract no. 10314, XP002067741 * |
PATENT ABSTRACTS OF JAPAN vol. 003, no. 142 (C - 065) 24 November 1979 (1979-11-24) * |
Also Published As
Publication number | Publication date |
---|---|
EP0960156A1 (de) | 1999-12-01 |
AU6619698A (en) | 1998-09-08 |
DE19706024A1 (de) | 1998-08-20 |
US6251968B1 (en) | 2001-06-26 |
JP2001512505A (ja) | 2001-08-21 |
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