28084-48-2

Usage

Uses

Used in Sunscreen and Cosmetic Products:
4-Hydroxyphenyl 4-hydroxybenzoate is used as a UV filter for its capacity to absorb and block harmful UV radiation, thereby providing photoprotection to the skin.
Used in Skincare Products for Antioxidant Benefits:
4-Hydroxyphenyl 4-hydroxybenzoate is utilized as an antioxidant in skincare products to protect the skin from the damaging effects of free radicals and UV-induced oxidative stress, contributing to skin health and reducing the risk of skin aging and other related conditions.
Used in Anticancer Research:
4-Hydroxyphenyl 4-hydroxybenzoate is studied for its potential as an anticancer agent, indicating its possible role in modulating cancer-related pathways and offering a novel approach to cancer treatment.
Used in Skin Inflammation Management:
4-Hydroxyphenyl 4-hydroxybenzoate has been investigated for its ability to modulate inflammatory responses in the skin, suggesting its use in products designed to soothe and reduce skin inflammation.

InChI:InChI=1/C13H10O4/c14-10-3-1-9(2-4-10)13(16)17-12-7-5-11(15)6-8-12/h1-8,14-15H

Upstream product

• 123-31-9 hydroquinone 
• 99-96-7 4-hydroxy-benzoic acid 
• 104-15-4 toluene-4-sulfonic acid 
• 103-16-2 4-Benzyloxyphenol 
• 1486-51-7 p-(benzyloxy)benzoic acid 
• 897599-10-9 4-benzyloxyphenyl 4-benzyloxybenzoate 

Downstream Products

• 138550-28-4 4-trimethylsilanyloxy-benzoic acid 4-trimethylsilanyloxy-phenyl ester 
• 187586-35-2 4-(4-Acryloyloxybutoxy)phenol 4-(4-Acryloyloxybutoxy)benzoate 
• 1007319-12-1 C₂₅H₃₀O₆ 

Relevant academic research and scientific papers

Liquid crystal elastomer actuator with serpentine locomotion

A snake-mimic soft actuator composed of a bilayered liquid crystal elastomer ribbon and two serrated feet is reported in this work. Under repeated on/off near-infrared light irradiation, this actuator can move forward relying on a reversible shape morphin

Aggregation-Induced Emission Luminogen-Functionalized Liquid Crystal Elastomer Soft Actuators

An aggregation-induced emission (AIE)-active liquid crystal elastomer (LCE) soft actuator is fabricated through chemical incorporation of a four-alkenyl-armed tetraphenylethene-core cross-linker into a main-chain LCE matrice by a facile in situ two-step acyclic diene metathesis (ADMET) polymerization/cross-linking method. The LCE sample is endowed with the ability to readily tune the photoluminescence property during the fully reversible, thermally induced shape morphing process, which is indeed attributed to the AIE characteristic of tetraphenylethene molecules predominately determined by temperature variation.

Epoxy compound, composition, material for semiconductor package, molded product, electrical and electronic device, and semiconductor package

Epoxy compounds, compositions, materials for semiconductor packages, molded products, electrical and electronic devices, and semiconductor packages are provided. The epoxy compound is represented by the following Chemical Formula 1 and has at least one mesogenic naphthalene unit. In Chemical Formula 1, at least one of M1, M2, or M3, which is a mesogenic unit, is a naphthalene unit. M1, M2, M3, L1, L2, and E1 and E2 are as defined in the detailed description. The chemical formula (1) is E1-M1-L1-M2-L2-M3-E2.

Covalent Adaptable Liquid Crystal Networks Enabled by Reversible Ring-Opening Cascades of Cyclic Disulfides

The development of covalent adaptable liquid crystal networks (LCNs) enabled by introducing dynamic covalent bonds has endowed liquid crystal actuators with self-healing properties and reversible shape programmability, broadening their applications in div

Mesomorphism and shape-memory behavior of main-chain liquid-crystalline co-elastomers: Modulation by the chemical composition

The mesomorphic behavior, shape shifting, and shape-memory types of two homologous series of main-chain liquid-crystalline co-elastomers (MC-LCEs) with composition-tunable transition temperatures and mesophases structures are reported. The weakly cross-linked macromolecules were prepared in a one-step procedure by the versatile platinum-catalyzed hydrosilylation reaction between siloxane oligomers (linear spacers and netlike point molecules) and liquid-crystalline binary mixtures, composed of defined proportions of divinylic monomeric mesogens. First, the two sets of alternated, linear copolymers with disiloxane or trisiloxane chain extender, respectively, were investigated. They either exhibit both smectic C (SmC) and nematic (N) phases or a single SmC phase, the nature of which being dictated by the length of the inserted siloxane moieties, and the temperatures ranges regulated by the composition of the mesogenic mixture (mesogens ratio). As anticipated, the thermal behavior of the corresponding co-elastomers is not greatly affected by the weak reticulation (less than 5% w/w), whose transition temperatures (from the ambient to ca. 100 °C) and mesophases types (SmC and N) are quasi-replicated from the polymers and still majority governed by the intermingling of the constitutive components (mesogens ratios, siloxane, and comonomers). Moreover, these MC-LCEs exhibit two types of shape-memory behaviors, which are imposed selectively by the nature of the siloxane extender and which are understood in relation to the mesophases' structures. The combination of small-angle X-ray scattering and thermoelastic experiments gives some fundamental insights into the relationships between molecular structures and macroscopic elastic properties in MC-LCEs in general, which should be beneficial for future designs of soft materials with desired shape-memory properties.

SuFEx-based synthesis of polysulfates

High-molecular-weight polysulfates are readily formed from aromatic bis(silyl ethers) and bis(fluorosulfates) in the presence of a base catalyst. The reaction is fast and proceeds well under neat conditions or in solvents, such as dimethyl formamide or N-methylpyrrolidone, to provide the desired polymers in nearly quantitative yield. These polymers are more resistant to chemical degradation than their polycarbonate analogues and exhibit excellent mechanical, optical, and oxygen-barrier properties. High-molecular-weight polysulfates are readily formed from aromatic bis(silyl ethers) and bis(fluorosulfates) in the presence of a base catalyst. The polymers were obtained in nearly quantitative yield under neat conditions, they are more resistant to chemical degradation than their polycarbonate analogues and exhibit excellent mechanical, optical, and oxygen-barrier properties. BPA=bisphenol A.

Liquid crystal compositions, polymer networks derived therefrom and process for making the same

The invention relates to compounds of Formula (I): The invention further relates to liquid crystal compositions comprising compounds of Formula (I); compositions further comprising one or more chiral compounds; and polymer networks derived from the polymerization of the liquid crystal compositions. Another embodiment relates to processes for providing compounds of Formula (I).

CHIRAL COMPOUNDS, LIQUID CRYSTAL COMPOSITIONS AND POLYMER NETWORKS DERIVED THEREFROM

Isomannide-based compounds having chiral properties are provided, in addition to liquid crystal compositions and polymer networks derived therefrom.

CHIRAL COMPOUNDS, AND LIQUID CRYSTAL COMPOSITIONS AND POLYMER NETWORKS DERIVED THEREFROM

The invention relates to compounds of formula (I): insert Formula (I) here wherein R1and R2are each independently selected from the group: H, F, Cl and CH3; n1 and n2 are each independently integers 3 to 20; q and r are each independently integers 0, 1 or 2, with the proviso that q + r is ≥ 1; D is a divalent chiral radical selected from the group: (D1-D4) wherein R3 is a C1 to C6 straight or branched chain alkyl group; and each B1and B2 is a divalent radical independently selected from the group: R4-substituted-1,4-phenyl, wherein R4 is H,-CH3 or -OCH3, 2,6-naphthyl; and 4,4'-biphenyl; with the provisos that when q + r = 3, at least one of B1 and B2 is R4-substituted-1,4-phenyl; and when q + r = 4, at least two of B1 and B2 are R4-substituted-1,4-phenyl. The invention further relates to liquid crystal compositions comprising compounds of formula (I) and polymer networks derived from the polymerization of the liquid crystal compositions.

Liquid crystalline epoxy thermosets

Rigid rod epoxy compounds can be cured in liquid crystalline structure. The so obtained networks exhibit better mechanical properties with respect to the isotropic ones. The mesogenic character of the epoxy compounds appears more crucial than the molecular geometry of the curing agent in developing liquid crystallinity. The curing temperature plays an important role in affecting the state of order of the thermosets.