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One-component adhesive for thermoplastic polyurethane

A thermoplastic polyurethane and adhesive technology, used in polyether adhesives, graft polymer adhesives, non-polymer adhesive additives, etc., can solve the problem of difficult to achieve rubber tearing and bonding, no thermosetting part And other issues

Pending Publication Date: 2022-03-18
LORD CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Parts begin to cool rapidly after injection, combined with the absence of a thermoset part for covalent bonding, making rubber tearing bonds difficult

Method used

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  • One-component adhesive for thermoplastic polyurethane
  • One-component adhesive for thermoplastic polyurethane
  • One-component adhesive for thermoplastic polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] Three exemplary one-component adhesive composition (7825A, 71-1-8 and 17007-86D) preparation of the subject of the present disclosure provides formulations according to Table 1 below.

[0111] Table 1.TPU adhesive formulation

[0112]

[0113]

[0114]

[0115] The binder formulation is modified phenoxy PKHS-27, commercially available from Gabriel PerformanceProducts, LLC (USA, Ohio, Akron), and in the form of 27% methyl ethyl ketone (MEK) solution of exist. Polymaleimide (M20) is a powder. Prior to addition to the adhesive composition, the M20 at 20% total solids content (TSC) was stirred into cyclohexanone, and heated with stirring to 80 deg.] C to 90 deg.] C for 20 minutes to 30 minutes. Being bound by any one theory, it is believed that, provided in the form of a solution M20 facilitate deposition and reactive (i.e., low temperature). Then PKHS-27, M20 and propylene carbonate was mixed. These compositions may be needed with a dye or colored pigment grinding / stai...

Embodiment 2

[0129] An additional exemplary single-component adhesive composition is prepared according to the formulation provided in Table 5 below. The composition was initially used with castable polyurethane, but it is now found that the composition is, for example, for about 30 minutes in combination of 121 ° C for about 30 minutes, is suitable for a series of TPUs.

[0130] As described in the above-mentioned embodiment, the modified phenoxy group of the above-mentioned adhesive formulation is PKHS-27, which is available from Gabriel Performance Products, LLC (USA, Ohio, Aklen), and 27% dissolved in methyl ethyl ketone (MEK). It is adhesion to the silane, i.e., γ-cyclopropoxypropyltrimethoxysilane (which is sold in the trade name Silquest A-187) TM (USA, New York, Waterford, Momentive Performance Materials) Sales) and 醌 (in KEYPLAST TM BLUE A (USA, South Carolina, Spartan, Morinken) is sold in MEK and cyclohexanone.

[0131] Table 5. Other 1K adhesive formula

[0132]

[0133] The bind...

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Abstract

The present disclosure describes a one-component adhesive comprising a grafted phenoxy resin, a polymaleimide compound, an organic carbonate, and optionally a silane adhesion promoter. More specifically, the grafted phenoxy resins include carboxylic acid and acrylate functionalities. The present disclosure also describes a method of bonding a thermoplastic polyurethane to a rigid substrate using the adhesive, for example in an injection molding process or compression molding process.

Description

[0001] Cross-reference related application [0002] The claims of the US temporary patent application submitted by the US Temporary Patent Application No. 62 / 878, 482, filed on July 25, 2019, which are incorporated herein by reference. Technical field [0003] The subject matter of the present disclosure relates to a single component binder composition comprising a graft phenoxy resin, and a related bonding assembly and a method of using an adhesive in an injection molding or plastic molding operation, such as The thermoplastic polyurethane elastomer is bonded to a metal and other rigid substrates. Background technique [0004] Thermoplastic polyurethane (TPU) belongs to the subclass of the thermoplastic elastomer (TPE). The TPE is a copolymer or a mixture of polymers, composed of a material having thermoplastic and elastomeric characteristics. The crosslink type (e.g., in one stage involving dipole or hydrogen bonding in one stage) is much smaller than the crosslink type of the c...

Claims

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Application Information

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IPC IPC(8): C09J151/08C09J179/08C09J11/06
CPCC09J151/08C09J179/08C09J11/06C08L79/08C08K5/54C08L75/04C08L75/06C08L75/08C09J171/00C08K5/09C08L79/085
Inventor 布莱恩·卡尼
Owner LORD CORP
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