Synthesis and characterization of novel hyperbranched alkyd and isocyanate trimer based high solid polyurethane coatings

Naik, R. Baloji; Ratna, Debdatta; Singh, S.K.

doi:10.1016/j.porgcoat.2013.10.012

Cited by 38 publications

(14 citation statements)

References 28 publications

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“…Moreover, the FTIR spectra of MAH modified SAR gave more information of functional groups such as ―OH (around 3429 cm −1 ) and C═C (1587 cm −1 ), suggesting the acid anhydride successfully modified the SAR resins. Furthermore, in the FTIR spectrum of FASAR0, the presence of characteristic band at 843 cm −1 and the disappearance of C═C unsaturation indicated that the acrylate group had successfully grafted onto MAH‐modified SAR . From the spectra of FASAR6, the vibration absorption of the C―F bond located at 1236 cm −1 was observed.…”

Section: Resultsmentioning

confidence: 99%

“…To tackle those limitations of waterborne alkyd resin, researchers had tried to improve the performance of coatings by introducing different functional components, such as fluorine, acrylic, silicone, and so on . In particular, fluorine‐containing polymers and organosilicone are highly valued for their ultralow surface tension, weather‐resistant, excellent inertness to solvents, hydrocarbons, acids, alkalis, and moisture, as well as corrosion resistance due to the high bond strength of carbon‐fluorine bond, the low polarizability, and the strong electronegativity of the fluorine atom .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cross‐linked waterborne alkyd hybrid resin coatings modified by fluorinated acrylate‐siloxane with high waterproof and anticorrosive performance

Zhong

et al. 2018

Polymers for Advanced Techs

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Waterborne alkyd resin coatings are ideal for use as corrosion protection coatings because of its high cost-effective and environmental advantages. However, their uses are restricted to general applications due to their poor acid, water, and alkali resistance. In this work, waterborne alkyd hybrid resins modified with fluorinated acrylate-siloxane were synthesized via a surfactant-free miniemulsion polymerization process using maleic anhydride and silicon modified alkyd resin, dodecafluoroheptyl methacrylate, methyl methacrylate, and butyl acrylate as monomers. And then, crosslinking alkyd resin films were prepared at room temperature using trimethylolpropane-tris-(β-N-azir-idinyl) propionate (XR-100) as the crosslinking agent. The acquired films had lower water absorption and higher water contact angles and had better mechanical/thermal properties, as well as good waterproof property.Most importantly, the electrochemical corrosion studies revealed that the cross-linked coating exhibited superior corrosion resistance performance with an inhibition efficiency of 99.95% and a corrosion rate of 6.95 × 10 −3 mm per year.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cross‐linked waterborne alkyd hybrid resin coatings modified by fluorinated acrylate‐siloxane with high waterproof and anticorrosive performance

Zhong

et al. 2018

Polymers for Advanced Techs

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“…The demand for eco-friendly coatings, like waterborne coatings [1,2], high solid coatings [3], UV curable coatings [4,5] and powder coatings [6], has increased rapidly. Environmental concerns were the major factors behind this shift, such as recycling or waste disposal at the end of their life circle, volatile organic solvent emissions.…”

Section: Introductionmentioning

confidence: 99%

Preparation of branched polyurethane curing agent by condensation polymerization and radical polymerization

Wang

2020

SN Appl. Sci.

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A new PU curing agent with branched structure was prepared by esterification, radical polymerization and reaction of TDI. Unsaturated content (itaconic acid) was added in esterification of adipic acid and 1,4-butanediol, which prepared linear molecule poly (itaconic acid-adipic acid-1,4-butanediol). Then, azodiisobutyronitrile was used to initiate polymerization to form branched molecule (CPBIA). CPBIA reacted with semi-blocked TDI to prepare TDI-CPBIA. These polymers were characterized by FT-IR, 1 H NRM and GPC. Their structure was confirmed. The adjustment of polycondensation and radical polymerization by the raw material ratio and reaction temperature could yield the desired PU curing agent with branched structure and fine solubility. According primary experiments, TDI-CPBIA had fine application performance. The coating had good hardness (6H), thermal performance (T 0 > 250 °C), adhesion (level 1) and impact strength (> 50 cm). This PU curing agent has fine application performance.

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“…[1][2][3][4] Thus, hyperbranched polymers have been widely used in biomedical materials, nonlinear optical materials, tanning, surface modification, supramolecular chemistry, and nano materials. [13][14][15][16] Ren et al 14 studied that the blend films of PU and amino-terminal hyperbranched polymers (HBP-NH 2 ). 11,12 However, PU film has poor moisture adsorption and vapor permeability, which directly influence the wearing comfort of product significantly.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and application of hyperbranched poly(urethane‐urea) finishing agent with amino groups

Ren

Geng

Chen

et al. 2016

J of Applied Polymer Sci

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The isocyanate-terminated linear polyurethane prepolymer (LPPU) was successfully synthesized via step-by-step polymerization, with isophorone disocyanate (IPDI) and polytetramethylene ether glycol (PTMG, M n 5 2000 g/mol) used as raw materials, dibutyltin dilaurate (DBTDL) as the catalyst, 1,4-butanediol (BDO) as the chain extender and anhydrous ethanol (EtOH) as the blocking agent. Then the hyperbranched poly (urethane-urea) (HBPU) containing amino groups was synthesized by grafting LPPU on amino-terminated hyperbranched polymers (NH 2 -HBP). The molecular structure of LPPU and HBPU were characterized by means of FT-IR and 1 H-NMR. It was founded that LPPU and HBPU were successfully synthesized as anticipated. The thermal stability and crystalline morphology of LPPU and HBPU were characterized and analyzed by TG and XRD. Additionally, it was also found that, after addition of 10% HBPU, the water absorption rate, water vapor transmission rate, and water vapor permeability increased markedly by 162.02%, 400.00%, 260.00%, respectively. The tensile strength of membrane decreased by 24.57% and the elongation at break increased by 26.92%. Compared with the leather finished by commercial PU finishing agent, the leather finished by HBPU presented better properties. The water vapor permeability of the leather finished by increased by 13.0%, and the dry-and wet-rub resistances and the physical and mechanical performances were excellent.

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Synthesis and characterization of novel hyperbranched alkyd and isocyanate trimer based high solid polyurethane coatings

Cited by 38 publications

References 28 publications

Cross‐linked waterborne alkyd hybrid resin coatings modified by fluorinated acrylate‐siloxane with high waterproof and anticorrosive performance

Cross‐linked waterborne alkyd hybrid resin coatings modified by fluorinated acrylate‐siloxane with high waterproof and anticorrosive performance

Preparation of branched polyurethane curing agent by condensation polymerization and radical polymerization

Synthesis and application of hyperbranched poly(urethane‐urea) finishing agent with amino groups

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