WO2001017743A1 - Agent de separation reactif pour le demoulage de resines synthetiques - Google Patents

Agent de separation reactif pour le demoulage de resines synthetiques Download PDF

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Publication number
WO2001017743A1
WO2001017743A1 PCT/DE2000/002985 DE0002985W WO0117743A1 WO 2001017743 A1 WO2001017743 A1 WO 2001017743A1 DE 0002985 W DE0002985 W DE 0002985W WO 0117743 A1 WO0117743 A1 WO 0117743A1
Authority
WO
WIPO (PCT)
Prior art keywords
release agent
reactive
agent according
resin
release agents
Prior art date
Application number
PCT/DE2000/002985
Other languages
German (de)
English (en)
Inventor
Gerhard Jonschker
Original Assignee
Nanogate Gmbh
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
Priority claimed from DE1999142500 external-priority patent/DE19942500A1/de
Application filed by Nanogate Gmbh filed Critical Nanogate Gmbh
Priority to AU75064/00A priority Critical patent/AU7506400A/en
Priority to DE10082636T priority patent/DE10082636D2/de
Publication of WO2001017743A1 publication Critical patent/WO2001017743A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
    • B29C37/0028—In-mould coating, e.g. by introducing the coating material into the mould after forming the article
    • B29C37/0032—In-mould coating, e.g. by introducing the coating material into the mould after forming the article the coating being applied upon the mould surface before introducing the moulding compound, e.g. applying a gelcoat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/60—Releasing, lubricating or separating agents
    • B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers

Definitions

  • the present invention is concerned with the demolding of polymer resins, such as. B. polyurethane, epoxy or polyester.
  • the demolding i.e. Removal from the mold generally requires release agents which are applied to a mold before the resins are cured therein.
  • Mainly silicone-based substances are currently used as release agents.
  • the permanent release agents are formed by highly cross-linked molecular structures provided on the mold surface, which remain there permanently.
  • Semi-permanent release agents have a similar structure, but have to be reapplied before molding.
  • the aim of the present invention is to provide something new for commercial use.
  • a first group comprises fluorinated compounds with reactive groups which can be matched to the chemistry of the polymer resin to be filled.
  • Reactive fluoromonomers often have a wax-like consistency because, as is also known from Teflon, the fluorine groups hardly interact with one another. By introducing reactive groups into the fluoromonomers, this becomes filled reactive polymer resin on its surface saturated with fluorinated material, since the reactive groups of the fluoromonomers react with the reactive polymer resin. Since the reactive release agents that are used should only have one functional group per molecule, the reactive release agents are aligned. Due to the reaction between reactive fluoromonomers, release agents and the polymer resin to be filled in, the fluorinated end pieces of the molecules are directed outwards like a comb and then form the separating surface to form.
  • the filled polymer is provided with a thin fluorinated non-stick layer. This does not need to be washed off after the demolding process, but at the same time serves as a non-stick and anti-dirt seal of the manufactured components, in particular at least during the further manufacturing process. This process is therefore also an in-mold coating of the polymers with a simultaneous release effect on the mold.
  • a substance with two reactive groups is used as the reactive release agent, the substance generally having the structure XRY and where X and Y symbolize the reactive groups, while R in particular is an alkyl, cycloalkyl, aryl - Can represent alkylene radical and where X can be selected from one of the functional groups -NH, -SH, -OH or an epoxy group, vinyl group, methacrylic group, carboxyl or anhydride group and where Y is likewise one of these groups, optionally another Group can represent.
  • a reactive release agent with such a molecular structure offers advantages in that one of the reactive groups can react with the resin to be filled in, while the other is available after the resin has been removed from the mold stands to enter into a connection on the finished, molded part with coatings, lacquers or the like to be applied. It is possible and preferred to embed the reactive release agents, in particular those with two functional groups, in a matrix which can be formed from silicones, in particular highly viscous silicones, siloxanes, non-reactive polymers and / or non-reactive fluoropolymers and / or waxes.
  • the reactive release agents in particular the fluorine compounds which are as monomeric as possible, can be applied to the mold in solution in suitable solvents simply by spraying and do not differ in handling from the conventional release agents known hitherto.
  • polymers with a lamellar structure and a certain residual reactivity can also be used for this purpose. A small number of the lamellae can then be reacted and removed by the wetting resin through the reaction with the polymer.
  • This type of reactive release agent can be used for all cases in which reactive polymer resins are filled into a mold.
  • This type of release agent is particularly suitable for demolding polyurethane, epoxy, polyester and phenolic resins.
  • the cohesion of the release agent is low so that the agent is not detached as a whole from the mold wall when it is removed from the mold.
  • the reactive release agent must be a solid or ind. present as a viscous oil.
  • a suitable reactive release agent is perfluorooctanoic acid
  • This substance also has a molecular region which is spaced apart from the perfluorinated or at least partially fluorinated region and which can react with the polymer.
  • the separation process is believed to occur as follows:
  • the release agent molecules are arranged in a disordered manner in the release agent layer.
  • some of the reactive groups of the release agent indicate the shape, others indicate the resin.
  • the reactive polymer resin for example the polyurethane resin
  • the reactive groups present in the polymer resin can react with the reactive molecular region of the reactive release agent.
  • the fluorinated area thereby points away from the hardening resin, but is chemically bound to it.
  • the fluorinated areas pointing away from the hardening resin provide the hardening body with a surface-modifying separating layer which has non-stick effect. The result is a surface modification in which the cured resin is provided with a non-stick coating and can therefore be easily removed from the mold.
  • the following molecular groups in particular can also be used as reactive groups: - H2 (amine); -OH (alcohol); -SH (mercaptan); P0 (0H) 2 (phosphate); Ammonium compounds NR 3 + which can be a functional group, in particular alkyl, alkenyl, aryl, cycloalkyl and acrylate and / or methacrylate.
  • lamellar solids can be used, of which the upper (s) lamellae react with the reactive curing resin and are thus integrated.
  • the lamellar solid is chosen so that its layer structure has only a loose bond, so that the layers can be separated easily.
  • One example is an adduct of perfluorooctanoic acid and polyethyleneimine;
  • the advantages of the present invention can be extended from release agents for plastic resins to the separation of other substances, in particular hybrids, i.e. organic-inorganic casting or spraying materials, mineral materials such as plastered concrete, gypsum, lime, nanocomposites, i.e. especially Ormocere.
  • the reactive group must be adjusted accordingly; For example, silicon-functional groups can be used.
  • other processing forms such as injection molding, thermoplastic molding and the like can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Agent de séparation pour le démoulage de substances durcissables moulées par coulage et/ou par injection. Selon la présente invention, ledit agent est formé par des substances réactives, non coulantes à la température de traitement et dotées d'au moins un groupe fonctionnel réactif, et/ou contient lesdites substances.
PCT/DE2000/002985 1999-09-02 2000-09-01 Agent de separation reactif pour le demoulage de resines synthetiques WO2001017743A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU75064/00A AU7506400A (en) 1999-09-02 2000-09-01 Reactive release agent for stripping synthetic resins
DE10082636T DE10082636D2 (de) 1999-09-02 2000-09-01 Reaktiv - Trennmittel für die Entformung von Kunststoffharzen

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19941754 1999-09-02
DE19941754.7 1999-09-02
DE1999142500 DE19942500A1 (de) 1999-09-06 1999-09-06 Reaktiv-Trennmittel für die Entformung von Kunststoffharzen
DE19942500.0 1999-09-06

Publications (1)

Publication Number Publication Date
WO2001017743A1 true WO2001017743A1 (fr) 2001-03-15

Family

ID=26054798

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/002985 WO2001017743A1 (fr) 1999-09-02 2000-09-01 Agent de separation reactif pour le demoulage de resines synthetiques

Country Status (3)

Country Link
AU (1) AU7506400A (fr)
DE (1) DE10082636D2 (fr)
WO (1) WO2001017743A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003045656A1 (fr) * 2001-11-28 2003-06-05 Bayer Materialscience Ag Agents de demoulage et procede de production de pieces moulees en matiere plastique

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3567500A (en) * 1968-04-18 1971-03-02 Us Agriculture Fluoroamide-amino polymers and process for imparting oleophobic yet hydrophilic properties to fibrous materials
US4058537A (en) * 1976-01-05 1977-11-15 Ciba-Geigy Corporation Esters of anhydride aromatic polycarboxylic acids with perfluoroalkyl alcohols
US4311764A (en) * 1980-10-01 1982-01-19 Ppg Industries, Inc. Polyurethane surface treatment and resulting monomolecular layered article
JPS59213716A (ja) * 1983-05-18 1984-12-03 Neos Co Ltd ポリウレタンリム成形用内部添加離型剤
JPS6058417A (ja) * 1983-09-09 1985-04-04 Asahi Glass Co Ltd ポリウレタン系エラストマ−の製造方法
JPS6073815A (ja) * 1983-06-29 1985-04-26 ユニオン・カ−バイド・コ−ポレ−シヨン 単分子層離型剤
US4585829A (en) * 1983-09-30 1986-04-29 Union Carbide Corporation Internal mold release for reaction injection molded polyurethanes
JPS6221512A (ja) * 1985-07-23 1987-01-29 Asahi Glass Co Ltd 離型剤組成物
JPS62240363A (ja) * 1986-04-10 1987-10-21 Shin Etsu Chem Co Ltd 離型フイルム用シリコ−ン組成物
EP0305838A1 (fr) * 1987-08-31 1989-03-08 Henkel Kommanditgesellschaft auf Aktien Utilisation du silanol de glycidoxypropyle et des polysiloxanes de diméthyle et agents de démoulage qui les contiennent
EP0306302A2 (fr) * 1987-09-04 1989-03-08 Cogent Limited Composition et procédé pour la fabrication d'un revêtement résistant au rayage
JPS6474293A (en) * 1987-09-12 1989-03-20 Neos Kk Release agent
EP0325210A2 (fr) * 1988-01-18 1989-07-26 Nitto Denko Corporation Agent de démoulage et composite ayant une couche d'agent de démoulage vulcanisé
RU2004444C1 (ru) * 1992-02-10 1993-12-15 Малое предпри тие "Амтек" Антиадгезионный состав дл нанесени на пресс-формы при формовании изделий из резины
EP0591545A1 (fr) * 1992-03-30 1994-04-13 Daikin Industries, Ltd. Utilisation d'une composition comme agent de demoulage
EP0597115A1 (fr) * 1992-04-28 1994-05-18 Daikin Industries, Ltd. Agent de demoulage
JPH07316432A (ja) * 1994-05-23 1995-12-05 Shin Etsu Chem Co Ltd 離型剤組成物
JP2000072735A (ja) * 1998-08-28 2000-03-07 Agency Of Ind Science & Technol 含フッ素オリゴマー型界面活性化合物及びその製造方法
EP1008429A1 (fr) * 1998-12-07 2000-06-14 Wacker-Chemie GmbH Composition d'organopolysiloxane susceptible d'être peinte et utilisable pour le traitement antiadhérent des moules et procédé pour son utilisation

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3567500A (en) * 1968-04-18 1971-03-02 Us Agriculture Fluoroamide-amino polymers and process for imparting oleophobic yet hydrophilic properties to fibrous materials
US4058537A (en) * 1976-01-05 1977-11-15 Ciba-Geigy Corporation Esters of anhydride aromatic polycarboxylic acids with perfluoroalkyl alcohols
US4311764A (en) * 1980-10-01 1982-01-19 Ppg Industries, Inc. Polyurethane surface treatment and resulting monomolecular layered article
JPS59213716A (ja) * 1983-05-18 1984-12-03 Neos Co Ltd ポリウレタンリム成形用内部添加離型剤
JPS6073815A (ja) * 1983-06-29 1985-04-26 ユニオン・カ−バイド・コ−ポレ−シヨン 単分子層離型剤
JPS6058417A (ja) * 1983-09-09 1985-04-04 Asahi Glass Co Ltd ポリウレタン系エラストマ−の製造方法
US4585829A (en) * 1983-09-30 1986-04-29 Union Carbide Corporation Internal mold release for reaction injection molded polyurethanes
JPS6221512A (ja) * 1985-07-23 1987-01-29 Asahi Glass Co Ltd 離型剤組成物
JPS62240363A (ja) * 1986-04-10 1987-10-21 Shin Etsu Chem Co Ltd 離型フイルム用シリコ−ン組成物
EP0305838A1 (fr) * 1987-08-31 1989-03-08 Henkel Kommanditgesellschaft auf Aktien Utilisation du silanol de glycidoxypropyle et des polysiloxanes de diméthyle et agents de démoulage qui les contiennent
EP0306302A2 (fr) * 1987-09-04 1989-03-08 Cogent Limited Composition et procédé pour la fabrication d'un revêtement résistant au rayage
JPS6474293A (en) * 1987-09-12 1989-03-20 Neos Kk Release agent
EP0325210A2 (fr) * 1988-01-18 1989-07-26 Nitto Denko Corporation Agent de démoulage et composite ayant une couche d'agent de démoulage vulcanisé
RU2004444C1 (ru) * 1992-02-10 1993-12-15 Малое предпри тие "Амтек" Антиадгезионный состав дл нанесени на пресс-формы при формовании изделий из резины
EP0591545A1 (fr) * 1992-03-30 1994-04-13 Daikin Industries, Ltd. Utilisation d'une composition comme agent de demoulage
EP0597115A1 (fr) * 1992-04-28 1994-05-18 Daikin Industries, Ltd. Agent de demoulage
JPH07316432A (ja) * 1994-05-23 1995-12-05 Shin Etsu Chem Co Ltd 離型剤組成物
JP2000072735A (ja) * 1998-08-28 2000-03-07 Agency Of Ind Science & Technol 含フッ素オリゴマー型界面活性化合物及びその製造方法
EP1008429A1 (fr) * 1998-12-07 2000-06-14 Wacker-Chemie GmbH Composition d'organopolysiloxane susceptible d'être peinte et utilisable pour le traitement antiadhérent des moules et procédé pour son utilisation

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PATENT ABSTRACTS OF JAPAN vol. 009, no. 078 (C - 274) 6 April 1985 (1985-04-06) *
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PATENT ABSTRACTS OF JAPAN vol. 2000, no. 06 22 September 2000 (2000-09-22) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003045656A1 (fr) * 2001-11-28 2003-06-05 Bayer Materialscience Ag Agents de demoulage et procede de production de pieces moulees en matiere plastique
US6841115B2 (en) 2001-11-28 2005-01-11 Bayer Aktiengesellschaft Mold release agent and process for the production of plastic molded parts

Also Published As

Publication number Publication date
AU7506400A (en) 2001-04-10
DE10082636D2 (de) 2002-10-10

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