WO2026007735A1 - Composition électriquement pelable, procédé de préparation et article adhésif - Google Patents

Composition électriquement pelable, procédé de préparation et article adhésif

Info

Publication number
WO2026007735A1
WO2026007735A1 PCT/CN2025/102786 CN2025102786W WO2026007735A1 WO 2026007735 A1 WO2026007735 A1 WO 2026007735A1 CN 2025102786 W CN2025102786 W CN 2025102786W WO 2026007735 A1 WO2026007735 A1 WO 2026007735A1
Authority
WO
WIPO (PCT)
Prior art keywords
acrylate
acrylate polymer
composition
electro
parts
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
Application number
PCT/CN2025/102786
Other languages
English (en)
Chinese (zh)
Inventor
李良君
方旺胜
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.)
Steadychem Shanghai Co Ltd
Original Assignee
Steadychem Shanghai Co Ltd
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 Steadychem Shanghai Co Ltd filed Critical Steadychem Shanghai Co Ltd
Publication of WO2026007735A1 publication Critical patent/WO2026007735A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C09J133/062—Copolymers with monomers not covered by C09J133/06
    • C09J133/066—Copolymers with monomers not covered by C09J133/06 containing -OH groups
    • 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
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic

Definitions

  • This invention belongs to the field of chemical materials, and particularly relates to an electrostrippable composition, its preparation method, and an adhesive product.
  • adhesive products are often made of electro-peelable compositions.
  • voltage is applied to reduce the adhesive force of the adhesive product, thereby peeling it off from the adhered object.
  • adhesive products made of electro-peelable compositions have poor cohesion due to the inhibition of the raw material components, resulting in poor adhesive retention and failing to effectively balance electro-peelability and adhesive performance.
  • This application provides an electrically removable composition, a preparation method, and an adhesive article, aiming to solve the problem that the adhesive holding power of the existing adhesive articles is poor, and it is impossible to effectively balance the easy peeling and adhesive performance when electrically conductive.
  • the first aspect of this application provides an electrostriptable composition
  • an electrostriptable composition comprising the following components: an acrylate polymer, an ionic liquid, an additive A, and an additive B; additive A accounts for 10% to 30% of the total weight of the acrylate polymer; the mass ratio of additive A to additive B is (10 to 30): (1 to 10); wherein additive A and additive B are used for a synergistic crosslinking reaction with the acrylate polymer.
  • This application optimizes the raw material composition of the electro-peelable composition, using acrylate polymers, ionic liquids, additive A, and additive B as the main raw materials.
  • the acrylate polymers impart adhesive properties to the electro-peelable composition, while the ionic liquids enable the adhesive layer formed by the composition to be easily peeled off when energized.
  • Additive A can cross-link with the acrylate polymers to ensure the adhesive layer formed by the electro-peelable composition has high peel strength before energization, making it difficult to peel off from the adhered object.
  • Additive B can cross-link with the acrylate polymers to cure them into a film, facilitating the formation of the adhesive layer by the electro-peelable composition.
  • additive A accounts for 10% to 30% of the total weight of the acrylate polymer, and the mass ratio of additive A to additive B is (10 to 30): (1 to 10).
  • the mass ratio of additive A to additive B is (10 to 30): (1 to 10).
  • additive A, additive B, and the acrylate polymer can synergistically crosslink, enabling the electro-peelable composition to have a suitable crosslinking density. This significantly improves the cohesive force of the electro-peelable composition, thereby greatly enhancing the adhesive retention force of the adhesive layer formed by the electro-peelable composition. This allows for a good balance between its easy peeling and adhesive properties.
  • the electro-peelable composition provided in this application through the synergistic formulation of raw material components such as acrylate polymers, ionic liquids, additives A and B, has significantly improved cohesive strength.
  • the adhesive layer formed by the electro-peelable composition has high peel strength and adhesion retention before being energized, and is easy to peel off from the adhered object after being energized.
  • the adhesive products made from the electro-peelable composition can have both easy peeling upon being energized and excellent adhesive properties.
  • the electrostripping composition satisfies at least one of the following conditions A to H:
  • the components of the electro-removable composition include 2 to 30 parts of ionic liquid, 10 to 30 parts of additive A, and 1 to 10 parts of additive B.
  • Additive A includes linear resins containing active functional groups, with a molecular weight of 200 to 1000.
  • Additive B includes UV-curable resins and/or non-UV-curable resins
  • the anion of the ionic liquid is the bis(fluorosulfonyl)imide anion
  • the cations of ionic liquids include at least one of nitrogen-containing onium cations, sulfur-containing onium cations, phosphorus-containing onium cations, imidazolium-based cations, ammonium-based cations, or pyridinium-based cations;
  • the solid content of acrylate polymers is 10-50%;
  • the weight average molecular weight of the acrylate polymer is 100,000 or more and 5 million or less, preferably 200,000 or more and 4 million or less, and more preferably 300,000 or more and 3 million or less.
  • the glass transition temperature of acrylate polymers is below 0°C, preferably below -20°C, and more preferably below -40°C.
  • additive A includes at least one of rosin-based carboxyl-containing tackifying resin, epoxy-based epoxy tackifying resin, phenolic-based hydroxyl-containing tackifying resin, acrylate-based tackifying resin, and resins shown in Formula I, Formula II, and Formula III.
  • R1 represents phenyl, cyclohexyl, or methylene
  • R2 represents methyl, hydroxyl, vinyl, carboxyl, epoxy, mercapto, or acryloyloxy
  • R represents methyl, hydroxyl, vinyl, carboxyl, epoxy, mercapto, or acryloyloxy.
  • additive B when additive B is a non-UV-curable resin, it includes at least one of isocyanate-based crosslinking agents, epoxy-based crosslinking agents, aziridine-based crosslinking agents, or metal chelate-based crosslinking agents; or when additive B is a UV-curable resin, it includes at least one of epoxy acrylate, polyurethane acrylate, or polyester acrylate.
  • the acrylate polymer is made from a host unit, a functional unit, and an initiator as the main raw materials; wherein, the host unit is an alkyl (meth)acrylate containing alkyl groups with 1 to 14 carbon atoms; the functional unit includes acrylate monomers containing carboxyl groups and/or acrylate monomers containing hydroxyl groups; and the initiator includes any one of a polymerization thermal initiator and a polymerization photoinitiator.
  • the host unit is an alkyl (meth)acrylate containing alkyl groups with 1 to 14 carbon atoms
  • the functional unit includes acrylate monomers containing carboxyl groups and/or acrylate monomers containing hydroxyl groups
  • the initiator includes any one of a polymerization thermal initiator and a polymerization photoinitiator.
  • the acrylate polymers satisfy one or more of the following conditions I to M:
  • the mass ratio of the main unit to the functional unit is (70-95):(5-30);
  • the raw materials of the acrylate polymer also include multifunctional UV monomers; the mass ratio of the main unit, functional unit and multifunctional UV monomer is (60-95):(3-30):(2-10), preferably (60-85):(10-30):(5-10);
  • the raw materials for acrylate polymers also include polymerization solvents, which include at least one of aliphatic hydrocarbons, ester compounds and aromatic hydrocarbons;
  • Polymerization thermal initiators include azo polymerization initiators such as 2,2'-azobisisobutyronitrile, 2,2'-azobis(2-methylpropanediamine) disulfide, 2,2'-azobis(4-methoxy-2,4-dimethylpentanitrile), 2,2'-azobis(2,4-dimethylpentanitrile), 2,2'-azobis(2-methylbutyronitrile), 1,1'-azobis(cyclohexyl-1-carboxynitrile), and 2,2'-azobis(2,4,4-trimethyl...
  • azo polymerization initiators such as 2,2'-azobisisobutyronitrile, 2,2'-azobis(2-methylpropanediamine) disulfide, 2,2'-azobis(4-methoxy-2,4-dimethylpentanitrile), 2,2'-azobis(2,4-dimethylpentanitrile), 2,2'-azobis(2-methylbutyronitrile), 1,1'-azobis
  • the polymerization photoinitiator includes any one of the following type I photoinitiators: hydroxyphenylacetone, alkylaminoacetophenone, benzoyl ether, or phosphine oxide; or any one of the following type II photoinitiators: benzophenone, substituted benzophenone, anthraquinone, benzoyl ester, camphorquinone, or thioxanthrone.
  • a second aspect of this application provides a method for preparing an electrostrippable composition, comprising:
  • Preparation steps of acrylate polymers Mix the main unit, functional unit and polymerization solvent with a polymerization thermal initiator in a predetermined ratio to obtain acrylate polymer A; or, mix the main unit, functional unit, multifunctional UV monomer and polymerization solvent with a polymerization photoinitiator in a predetermined ratio to obtain acrylate polymer B.
  • Preparation steps of the electro-exfoliable composition Mix acrylate polymer A or acrylate polymer B with the remaining components in a predetermined ratio to obtain the electro-exfoliable composition.
  • the preparation steps of the acrylate polymer specifically include:
  • the monomer mixture A consisting of the main unit and functional units, is mixed with a polymerization solvent at a mass ratio of 1:(1-9), and a polymerization thermal initiator at a mass percentage of 0.2-1% of monomer mixture A is added and the mixture is heated to obtain acrylate polymer A; or,
  • a monomer mixture B consisting of a main unit, a functional unit, and a multifunctional UV monomer, is mixed with a polymerization solvent at a mass ratio of 1:(1-9).
  • a polymerization photoinitiator accounting for 1-5% of the mass percentage of monomer mixture B, is added and reacted under UV light to obtain an acrylate polymer B.
  • the remaining components also include a polymeric photoinitiator comprising 1 to 5% of the total mass of the acrylate polymer B.
  • a third aspect of this application provides an adhesive article comprising an adhesive layer formed from the above-described electro-removable composition or an electro-removable composition prepared by the above-described preparation method.
  • ranges disclosed in this application are defined by a lower limit and an upper limit.
  • a given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if ranges of 60-120 and 80-110 are listed for a specific parameter, it is expected that ranges of 60-110 and 80-120 are also included. Furthermore, if minimum range values of 1 and 2 are listed, and if maximum range values of 3, 4, and 5 are listed, then the following ranges are all expected: 1-3, 1-4, 1-5, 2-3, 2-4, and 2-5.
  • the numerical range "a-b” represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers.
  • the numerical range "0-5" indicates that all real numbers between "0-5" have been listed in this article; "0-5" is simply a shortened representation of these numerical combinations.
  • a parameter is stated as an integer ⁇ 2, it is equivalent to disclosing that the parameter is, for example, an integer such as 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.
  • steps in this application may be performed sequentially or randomly, preferably sequentially.
  • the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially.
  • the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order.
  • the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.
  • the term "or” is inclusive in this application.
  • the phrase “A or B” means “A, B, or both A and B”. More specifically, the condition “A or B” is satisfied by any of the following conditions: A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).
  • the general inventive concept of this application is to provide an electro-peelable composition.
  • the raw material components such as acrylate polymers, ionic liquids, additive A, and additive B, additive A, additive B, and acrylate polymers can synergistically crosslink under specific ratios, thereby greatly improving the cohesive force of the electro-peelable composition.
  • an electrostriptable composition comprising the following components: an acrylate polymer, an ionic liquid, an additive A, and an additive B; additive A accounts for 10% to 30% of the total weight of the acrylate polymer; the mass ratio of additive A to additive B is (10 to 30): (1 to 10); wherein additive A and additive B are used for a synergistic crosslinking reaction with the acrylate polymer.
  • the ionic liquid in the embodiments of this application refers to a salt that is liquid at room temperature, also known as a room-temperature molten salt.
  • Ionic liquids are mainly composed of cations and anions and have properties such as heat resistance, non-flammability, non-volatility, and chemical stability. Under applied voltage, the ionic liquid undergoes electrolysis, and the adhesive force of the adhesive layer formed by the electro-peelable composition decreases, thereby giving the adhesive product made of the electro-peelable composition the characteristic of being easily peeled off when electrically applied.
  • the introduction of ionic liquids usually inhibits the crosslinking density of the electro-exfoliating composition, resulting in a decrease in cohesive strength.
  • the additives A and B used in the component design of this application can effectively overcome the loss of crosslinking density caused by the introduction of ionic liquids through synergistic crosslinking with acrylate polymers. This allows the electro-exfoliating composition to have a suitable crosslinking density, thereby significantly improving the cohesive strength of the electro-exfoliating composition.
  • the adhesive layer formed by the electro-exfoliating composition has excellent adhesion retention and also has easy peeling properties when electrically conductive.
  • additive A accounts for 10% to 30% of the total weight of the acrylate polymer. Within this weight range, additives A and B can crosslink with the acrylate polymer, thereby effectively increasing the crosslinking density and promoting the effective improvement of the cohesive force of the electro-peelable composition.
  • the proportion of additive A is less than 10% of the total weight of the acrylate polymer, the synergistic effect of additives A and B on the acrylate polymer is poor, and the peel strength of the adhesive layer formed by the electro-peelable composition is low before the current is applied, making it easy to peel off from the adhered object.
  • the proportion of additive A is more than 30% of the total weight of the acrylate polymer, the cohesive strength of the electro-peelable composition will be severely reduced, and the adhesive retention force of the adhesive layer formed by the electro-peelable composition will be poor.
  • the mass ratio of additive A to additive B is (10-30):(1-10). Under this mass ratio, additive B and additive A can crosslink with acrylate polymers together, thereby significantly improving the cohesive force of the electro-peelable composition.
  • the adhesive retention force and electro-peelability of the adhesive layer formed by the electro-peelable composition can be balanced. If the mass ratio of additive B is too low, the crosslinking density of the electro-peelable composition will be low, the cohesive force of the electro-peelable composition will be low, and the adhesive retention force of the adhesive layer formed by the electro-peelable composition will be poor.
  • the mass ratio of additive B is too high, the crosslinking density of the electro-peelable composition will be too high, resulting in a sharp decrease in the peel strength of the adhesive layer formed by the electro-peelable composition, which will not be able to bond stably to the substrate when no voltage is applied.
  • the electro-peelable composition provided in this application through the synergistic formulation of raw material components such as acrylate polymers, ionic liquids, additive A and additive B, has significantly improved cohesion.
  • the adhesive layer formed by the electro-peelable composition has high peel strength and adhesion retention before being energized, and can combine easy peeling upon energization with excellent adhesive performance.
  • additive A accounts for 10% to 30% of the total weight of the acrylate polymer.
  • additive A can specifically account for any weight percentage within the range of 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, or any weight percentage within the range of 10% to 30% of the total weight of the acrylate polymer.
  • the mass ratio of additive A to additive B is (10 to 30):(1 to 10).
  • the mass ratio of additive A to additive B can be 10:1, 10:2, 10:3, 10:4, 10:5, 10:6, 10:7, 10:8, 10:9, 10:10 ... Any mass ratio within the range of (10 to 30):(1 to 10).
  • the components of the electro-peelable composition include 2-30 parts of ionic liquid, 10-30 parts of additive A, and 1-10 parts of additive B.
  • the ionic liquid By designing the ionic liquid to be 2-30 parts, additive A to 10-30 parts, and additive B to 1-10 parts relative to 100 parts of acrylate polymer, the cohesive strength of the electro-peelable composition can be effectively improved. This results in a high peel strength and adhesion retention force in the adhesive layer formed by the electro-peelable composition before energization, and easy peeling from the adhered object after energization, thus combining easy peeling upon energization with excellent adhesive properties.
  • the ionic liquid is preferably 2 to 15 parts relative to 100 parts of acrylate polymer, more preferably 2 to 9 parts. This preferred weight proportion of ionic liquid is more conducive to reducing the impact on the crosslinking density of the electro-peelable composition, while further improving the cohesive strength of the electro-peelable composition, thus achieving a balance between the adhesive retention strength and the ease of peeling after electro-exchange of the adhesive layer formed by the electro-peelable composition.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente demande se rapporte au domaine des matériaux chimiques et propose une composition électriquement pelable, un procédé de préparation et un article adhésif. La composition électriquement pelable proposée par la présente demande comprend les composants suivants : un polymère d'acrylate, un liquide ionique, un agent auxiliaire A et un agent auxiliaire B, l'agent auxiliaire A représentant 10 % à 30 % du poids total du polymère d'acrylate, le rapport en masse de l'agent auxiliaire A à l'agent auxiliaire B équivalant à (10-30):(1-10), l'agent auxiliaire A et l'agent auxiliaire B étant utilisés pour effectuer une réaction de réticulation synergique avec le polymère d'acrylate. Dans la présente demande, au moyen de la conception optimisée des composants dans la composition électriquement pelable, un article adhésif préparé à partir de la composition électriquement pelable présente une force de maintien d'adhérence significativement améliorée, et à la fois la pelabilité électrique et la propriété d'adhérence de l'article adhésif peuvent également être obtenues efficacement.
PCT/CN2025/102786 2024-07-03 2025-06-23 Composition électriquement pelable, procédé de préparation et article adhésif Pending WO2026007735A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202410890591.8 2024-07-03
CN202410890591.8A CN118685135B (zh) 2024-07-03 2024-07-03 一种电剥离性组合物、制备方法及粘合制品

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CN118685135B (zh) * 2024-07-03 2025-06-27 拓迪化学(上海)股份有限公司 一种电剥离性组合物、制备方法及粘合制品
WO2026063495A1 (fr) * 2024-09-18 2026-03-26 日東電工株式会社 Composition adhésive sensible à la pression, feuille adhésive sensible à la pression, et corps lié
CN119639373B (zh) * 2024-12-20 2026-03-31 佛山印艺印务有限公司 一种易移除的不干胶及其制备方法和应用
CN120843023B (zh) * 2025-09-23 2025-12-12 博益鑫成高分子材料股份有限公司 一种电剥离性粘合剂组合物

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CN101768415B (zh) * 2008-12-30 2013-03-27 第一毛织株式会社 抗静电粘合剂组合物、粘合膜及其制备方法
CN118043424A (zh) * 2021-09-30 2024-05-14 日东电工株式会社 粘合剂组合物、粘合片及接合体
CN115160950B (zh) * 2022-07-14 2024-05-31 山东中烟工业有限责任公司 一种可应用于潮湿环境下的压敏胶、制备方法及其应用

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