Synthesis of the fluorene spiroorthocarbonate and the evaluation of its antishrinking activity in the cationic photopolymerization of an epoxy resin

Ortiz, Ricardo Acosta; Duarte, María Lydia Berlanga; Olivares, Jorge Luis; Sangermano, Marco

doi:10.1080/15685551.2012.747148

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…The chemical structure of the fluorene SOC is depicted in Scheme . The monomer IX was prepared by a transesterification reaction of 9H‐fluorene‐9,9‐dimethanol with tetraethyl orthocarbonate . When this monomer was added at 10 mol % to a formulation containing DGEBA, a volume expansion of 0.19% was observed.…”

Section: Resultsmentioning

confidence: 99%

Development of Low‐Shrinkage Polymers by Using Expanding Monomers

Ortiz

Gómez

Valdez

et al. 2017

Macromolecular Symposia

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Section: Resultsmentioning

confidence: 99%

Development of Low‐Shrinkage Polymers by Using Expanding Monomers

Ortiz

Gómez

Valdez

et al. 2017

Macromolecular Symposia

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“…The cationic photopolymerization of DGEBA with a SOC bearing two fluorenyl groups SOC-Fl as anti-shrinkage additive was investigated by Sangermano et al [ 91 ]. The shrinkage during the curing reaction of pure DGEBA was 4.77 vol.%.…”

Section: Expanding Oxacyclesmentioning

confidence: 99%

“…Notably, in this context, bifunctional monomers, of which one of the two functionalities can be cured upon volumetric expansion, have been evaluated for applicability in novel product generations most recently. Prominent research foci comprise photopolymerizations with low or no volumetric shrinkage during curing [ 36 , 50 , 53 , 58 , 59 , 60 , 90 , 91 , 92 , 93 , 94 , 95 , 128 , 129 ], dental fillings with low or no volumetric shrinkage during curing [ 21 , 75 , 98 , 100 , 101 , 102 , 111 ] and the 3D printing with unrivaled alignment of the geometry of the printed object with the CAD drawing [ 51 , 73 ].…”

Section: Applicability Of Expanding Monomers In Novel Products Andmentioning

confidence: 99%

Expanding Monomers as Anti-Shrinkage Additives

Marx

Wiesbrock

2021

Polymers

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Commonly, volumetric shrinkage occurs during polymerizations due to the shortening of the equilibrium Van der Waals distance of two molecules to the length of a (significantly shorter) covalent bond. This volumetric shrinkage can have severe influence on the materials’ properties. One strategy to overcome this volumetric shrinkage is the use of expanding monomers that show volumetric expansion during polymerization reactions. Such monomers exhibit cyclic or even oligocyclic structural motifs with a correspondingly dense atomic packing. During the ring-opening reaction of such monomers, linear structures with atomic packing of lower density are formed, which results in volumetric expansion or at least reduced volumetric shrinkage. This review provides a concise overview of expanding monomers with a focus on the elucidation of structure-property relationships. Preceded by a brief introduction of measuring techniques for the quantification of volumetric changes, the most prominent classes of expanding monomers will be presented and discussed, namely cycloalkanes and cycloalkenes, oxacycles, benzoxazines, as well as thiocyclic compounds. Spiroorthoesters, spiroorthocarbonates, cyclic carbonates, and benzoxazines are particularly highlighted.

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Progress in optical adhesive and lamination process of touch screen in 3C products

et al. 2022

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Compared with the traditional keyboard and mouse input method, touch screen technique has high convenience for users. With the development of technology, touch screen is widely application in various electronic products because of their high transmittance, clear images, and convenient operation. This review mainly introduces the optical clear adhesive (OCA), liquid optical clear adhesive (LOCA), and the most commonly used LOCA ultra violet (UV)curable adhesives. Preparation and performance of UV-curable adhesives are deeply explored. The structure of touch screen, such as one glass solution (OGS), on-cell and in-cell is discussed. Moreover, lamination process includes full lamination and non-full lamination is also discussed. This review introduces the alignment technique comprise mechanical alignment technique and non-mechanical alignment technique (such as machine vision) and laminating equipment. The recent development and existing problems with the touch screen lamination process are discussed. Furthermore, this review describes the latest developments in the adhesive of touch screen lamination process and predicts possible future development trends, which could provide references for subsequent research work.

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Synthesis of the fluorene spiroorthocarbonate and the evaluation of its antishrinking activity in the cationic photopolymerization of an epoxy resin

Cited by 10 publications

References 18 publications

Development of Low‐Shrinkage Polymers by Using Expanding Monomers

Development of Low‐Shrinkage Polymers by Using Expanding Monomers

Expanding Monomers as Anti-Shrinkage Additives

Progress in optical adhesive and lamination process of touch screen in 3C products

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