Engineering Adhesives Provisional Technical Datasheet Excellent adhesion on plastics, metals and composites Excellent adhesion on nylon/polyamides No primers required High toughness Fast cure at room temperature PERMABOND® TA4550 is a 2-part, 2:1 low odour, acrylic adhesive. It was developed for structural bonding of nylon/polyamide without the need for any primers or additional surface treatment, such as plasma. TA4550 is also good for bonding plastics, composites and metals. It cures rapidly at room temperature and is thixotropic (nonslump). The adhesive is highly toughened, which makes it suitable for applications involving impact and vibration. Physical Properties of Uncured Adhesive Typical Performance of Cured Adhesive *Substrate failure was observed. fNature of surface, surface preparation, glue-line thickness, thickness of substrates, pull speed, batch variation, cure time and temperature will all affect the shear strength measurement. Typical Curing Properties Ratio of use The information given and the recommendations made herein are based on our research and are believed to be accurate but no guarantee of their accuracy is made. In every case we urge and recommend that purchasers before using any product in full-scale production make their own tests to determine to their own satisfaction whether the product is of acceptable quality and is suitable for their particular purpose under their own operating conditions. THE PRODUCTS DISCLOSED HEREIN ARE SOLD WITHOUT ANY WARRANTY AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED. No representative of ours has any authority to waive or change the foregoing provisions but, subject to such provisions, our engineers are available to assist purchasers in adapting our products to their needs and to the circumstances prevailing in their business. Nothing contained herein shall be construed to imply the non-existence of any relevant patents or to constitute a permission, inducement or recommendation to practice any invention covered by any patent, without authority from the owner of this patent. We also expect purchasers to use our products in accordance with the guiding principles of the Chemical Manufacturers Association’s Responsible Care® program. Permabond TA4550 Global TDS Revision 2 09 September 2024 Page 1/2

Additional Information Surface Preparation This product is not recommended for use in contact with strong oxidizing materials. This product may affect some thermoplastics and users must check compatibility of the product with such substrates. Information regarding the safe handling of this material may be obtained from the safety data sheet (SDS). Users are reminded that all materials, whether innocuous or not, should be handled in accordance with the principles of good industrial hygiene. Surfaces should be clean, dry and grease-free before applying the adhesive. Surfaces may have traces of...