Chemical Database: 2

Editor's note: Some chemicals in this database contain more information than others due to the original reason this information was collected and how the compilation was accomplished While working with material safety data sheets (MSDS) I found that manufacturers sometimes used obscure names for constituent chemicals and I didn't always have a good idea of what I was

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Bret Andre Principal Consultant EyeReg Consulting Inc

polymer of 2-Hydroxyethyl methacrylate (2-HEMA) and methacrylic acid cross-linked with ethylene glycol dimethacrylate (EGDMA) plus an initiator The co-polymer consists of 45% methafilcon A and 55% water by weight when immersed in saline solution The (methafilcon A) name has been adopted by the United States Adopted Names Council (USAN)

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Methyl methacrylate

Methyl Methacrylate is a methyl ester of methacrylic acid Methyl methacrylate is a reactive resin and the polymerized form is used as cement in dentistry orthopaedic surgery and ophthalmology The monomer form of this agent has relaxation effect on smooth muscle systemically which might be a result of nitric oxide-mediated response

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21 CFR

The substances listed in this section may be safely used as components of the uncoated or coated food-contact surface of paper and paperboard intended for use in producing manufacturing packing processing preparing treating packaging transporting or holding dry food of the type identified in 176 170(c) table 1 under Type VIII subject to the provisions of

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1

The lens material (etafilcon A) is a copolymer of 2-hydroxyethyl methacrylate and methacrylic acid cross-linked with 1 1 1-trimethylol propane trimethacrylate and ethylene glycol dimethacrylate These lenses are tinted blue using Reactive Blue Dye #4 to make the lenses more visible for handling

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US Patent # 5 939 242 Positive photoresist with an

Positive photoresist with an alkoxyalkyl ester group-containing (co)polymer and carboxyl-group containing (co)polymer Abstract Positive photoresist compositions which can be developed in aqueous-alkaline media comprising (a) at least one homopolymer or copolymer containing acid-labile alpha -alkoxyalkyl ester groups (b) at least one carboxyl-containing copolymer in which

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Theo Forch Pipe Seal K114 50ml

Contain and absorb spill with sand earth inert material or vermiculite Wipe up Place in a suitable labelled container for waste disposal Major Spills Moderate hazard Clear area of personnel and move upwind Alert Fire Brigade and tell them location and nature of hazard Wear breathing apparatus plus protective gloves

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The effect of pre

mean shear bond strengths (MPa) on pre-etched surfaces of: uncut enamel (15 204 vs 9 424) cut enamel (21 352 vs 12 110) and dentine (19 787 vs 8 278) Methacrylate-based bonds to pre-etched uncut enamel were signifi-cantly stronger (28 898 vs 18 451) Pre-etching cut enam-el enhanced the bond (20 548 vs 16 384 not significant) Pre-etched dentine recorded lower mean

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Bioinspired surface modification of poly(2

Read Bioinspired surface modification of poly(2-hydroxyethyl methacrylate) based microbeads via oxidative polymerization of dopamine Colloids and Surfaces B: Biointerfaces on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at your fingertips

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2

May 27 20112-hydroxyethyl methacrylate (HEMA) is a monomer based on methacrylic acid (MAA) used to produce biomaterials such as dental adhesive and composite resins [] The process of polymerization which is run in situ is always incomplete resulting in the presence of free monomers in the oral cavity [] Moreover monomers can be released from polymer-based tooth

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Defining Hazardous Waste: Listed Characteristic and Mixed

A solid waste is a hazardous waste if it is specifically listed as a known hazardous waste or meets the characteristics of a hazardous waste Listed wastes are wastes from common manufacturing and industrial processes specific industries and can be generated from discarded commercial products

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Haemodialysis Membranes: A Review

products while at the same time retaining the blood protein molecules with the help of a semipermeable membrane The membrane is the backbone of separation in hemodialysis In this review a brief history in which comparison of different haemodialysers and the membranes used previously is given The modern synthetic membranes and the

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Light

This contribution investigates the feasibility of aldehyde-functionalized poly(2-hydroxyethyl methacrylate) (PHEMA) brush-based interfaces for oligonucleotide binding and hybridization These polymer brushes which allow covalent immobilization of oligonucleotides are prepd by surface-initiated atom transfer radical polymn

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Allergic contact dermatitis from sculptured acrylic nails

Positive reactions to other acrylates were also found In all our patients allergies to 2-hydroxypropyl methacrylate and triethylene glycol diacrylate were identified two of our patients tested positive for 2- hydroxyethyl methacrylate ethylacrylate and hydroxyethyl acrylate (Figures 2 and 3)

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2

2-hydroxyethyl methacrylate (HEMA) is a monomer based on methacrylic acid (MAA) used to produce biomaterials such as dental adhesive and composite resins [] The process of polymerization which is run in situ is always incomplete resulting in the presence of free monomers in the oral cavity [] Moreover monomers can be released from polymer-based tooth

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Polymers containing amino groups their preparation

21/11/1989Non-crosslinked reaction products of compounds (A) which contain structural units carrying 1 3-dioxolan-2-one groups in random distribution and compounds (B) which contain at least one primary aliphatic or cycloaliphatic amino group and

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Theo Forch Pipe Seal K114 50ml

Contain and absorb spill with sand earth inert material or vermiculite Wipe up Place in a suitable labelled container for waste disposal Major Spills Moderate hazard Clear area of personnel and move upwind Alert Fire Brigade and tell them location and nature of hazard Wear breathing apparatus plus protective gloves

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Polymers

Unfortunately PMMA is impermeable to oxygen and water Oxygen must therefore be transported to the cornea of the eye in the tears and then passed under the contact lens each time the eye blinks Soft plastic lenses that pass both oxygen and water are made by using ethylene glycol dimethacrylate to crosslink poly(2-hydroxyethyl methacrylate)

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An Introduction to Hydrogels and Some Recent Applications

Hydrogels have existed for more than half a century and today they have many applications in various processes ranging from industrial to biological There are numerous original papers reviews and monographs focused on the synthesis properties and applications of hydrogels This chapter covers the fundamental aspects and several applications of hydrogels based on

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Elution of Monomers from Provisional Composite Materials

The release of substances such as BisGMA TEGDMA HEMA (2-hydroxyethyl methacrylate) and UDMA from dental composite materials has been studied extensively in the literature [7–14] Eluted substances have been shown to induce cytotoxicity

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Polymers containing amino groups their preparation

21/11/1989Non-crosslinked reaction products of compounds (A) which contain structural units carrying 1 3-dioxolan-2-one groups in random distribution and compounds (B) which contain at least one primary aliphatic or cycloaliphatic amino group and

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Safety and Efficacy of Nail Products

Knowledge of the safety and efficacy of nail products remains limited due to the relative dearth of literature published on the topic This review serves to summarize and interpret the data available regarding common nail products and their safety and efficacy Nail products such as nail polish nail polish removers and artificial nails have

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