Hot-Melt Adhesives from Renewable Resources: A Critical Review

2016 ◽  
Vol 4 (1) ◽  
pp. 104-118 ◽  
Author(s):  
P. Utekar ◽  
H. Gabale ◽  
A. Khandelwal ◽  
S.T. Mhaske
2020 ◽  
Vol 8 (1) ◽  
pp. 1-28
Author(s):  
Swaroop Gharde ◽  
Gaurav Sharma ◽  
Balasubramanian Kandasubramanian

Hot-Melt Adhesives (HMAs) are typically used in applications where instant sealing is critically required. HMAs are generally preferred for those applications where processing speed is critical. These materials are widely used in various engineering applications, mainly as sealants in leakages and crack filling of walls and roofs. The industrial use of HMAs is most common in glassware and automobiles for gluing glasses in buildings and bonding heavy motor parts. The formulation of HMAs contains a polymer of suitable nature that makes the base for a strong adhesive, and waxes are added to increase the settling time of adhesive. The tackifiers are used to dilute the polymer to adjust the Glass Transition Temperature (Tg) and to reduce the viscosity for proper flow of hot-melt. This review intends to comprehensively discuss the preparation and formulations of HMAs using various polymer matrices, along with their applications and mechanics. The designing of green HMAs has been discussed in the literature and have been promoted over conventional solvent-based HMAs due to their functionality without Volatile Organic Compounds (VOCs). Various measures, challenges, and resolutions for making hazard-free HMAs have been discussed in the present review.


2017 ◽  
pp. 101-114
Author(s):  
P. Utekar ◽  
H. Gabale ◽  
A. Khandelwal ◽  
S.T. Mhaske

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 284
Author(s):  
Maria Pilar Carbonell Blasco ◽  
María Ángeles Pérez Limiñana ◽  
Carlos Ruzafa Silvestre ◽  
Elena Orgilés Calpena ◽  
Francisca Arán Aís

The aim of this work is to develop sustainable reactive polyurethane hot melt adhesives (HMPUR) for footwear applications based on biobased polyols as renewable resources, where ma-croglycol mixtures of polyadipate of 1,4-butanediol, polypropylene and different biobased polyols were employed and further reacted with 4-4′-diphenylmethane diisocyanate. The different reactive polyurethane hot melt adhesives obtained were characterized with different experimental techniques, such as Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), softening temperature and melting viscosity. Finally, their adhesion properties were measured from T-peel tests on leather/HMPUR adhesives/SBR rubber joints in order to establish the viability of the used biobased polyols and the amount of these polyols that could be added to reactive polyurethane hot melt adhesives satisfactorily to meet the quality requirements of footwear joints. All biobased polyols and percentages added to the polyurethane adhesive formulations successfully met the quality requirements of footwear, being comparable to traditional adhesives currently used in footwear joints in terms of final strength. Therefore, these new sustainable polyurethane adhesives can be considered as suitable and sustainable alternatives to the adhesives commonly used in footwear joints.


2021 ◽  
pp. 1-28
Author(s):  
Swaroop Gharde ◽  
Gaurav Sharma ◽  
Balasubramanian Kandasubramanian

Alloy Digest ◽  
1991 ◽  
Vol 40 (12) ◽  

Abstract TACTIX 740 resin offers high durability for hot melt adhesives. TACTIX 741, an acetone solution of TACTIX 740, is designed for composites prepared by solution prepregging. This datasheet provides information on composition and physical properties. Filing Code: P-32. Producer or source: The Dow Chemical Company, Dow Plastics.


2021 ◽  
Vol 54 ◽  
pp. 102200 ◽  
Author(s):  
Adriana L. Alvarez ◽  
Sharon L. Weyers ◽  
Hannah M. Goemann ◽  
Brent M. Peyton ◽  
Robert D. Gardner

2019 ◽  
Vol 128 ◽  
pp. 436-444 ◽  
Author(s):  
Mengmeng Ruan ◽  
Huacheng Luan ◽  
Guiyou Wang ◽  
Michael Shen
Keyword(s):  

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