Acrylic compound

The acrylic compounds, maleimides, dimaleimides, and thiols are known as direct cross-hnk promoters, since they enter directly into the cross-linking reaction and become interconnecting molecular links [243]. 

Summary Multifunctional (meth)acrylate alkoxysilanes synthesized from commercially available acrylate compounds and mercapto-substituted alkoxysilanes or hydrosilanes are used as novel precursors for inorganic-organic copolymers. The alkoxysilyl groups are available for the formation of an inorganic Si-O-Si backbone by sol-gel processing. The (meth)acrylate groups allow the additional formation of organic polymer units by thermally or photochemically induced polymerisation reactions. 

The new compounds are prepared by standard methods The SH function of (RO)3Si(CH2)nSH, or the SiH function of (RO)jSiH is added to one olefinic group of commercially available acrylate compounds with more than one acrylate moiety [1], After hydrolysis and condensation, a Si-O-Si backbone is formed to which the acrylate groups are attached. Typical examples are shown in Figure 1. 

Morita K, Suzuki Z, Hirose H (1968) A tertiary phosphine-catalyzed reaction of acrylic compounds with aldehydes. Bull Chem Soc Jpn 41(11) 2815-2815... 

Baylis AB, Hillman MED (1972) Acrylic compounds. Celanese Corp. DE 2155113... 

Constitutional repeating unit and monomer unit can be identical as in the case of homopolymers of vinyl or acryl compounds ... 

Many reactions of thioacylformamidines have been described, especially those with acrylic compounds (Scheme 15) and ketenes. Acrolein... 

The batch process equipment used for preparing the components is essentially a set of reactors equipped with heaters and agitators. They operate under vacuum or in an inert gas atmosphere. One of the main requirements of the chemical molding process is the production of pore- and defect-free articles. The volatile products and moisture must be thoroughly removed from the reactant mixture. Moisture imparts porosity to the final articles due to evaporation and the chemical interaction of water with the components of the reactant system, for example, with isocyanates in case of polyurethane formulations. In some cases, moisture can also inhibit the polymerization process, for example, anionic-activated polymerization of lactams. Many monomers, particularly acrylic compounds, require removal of die inhibitors to increase their shelf-life. 

Verraest, D.L., Peters, J.A., and van Bekkum, H., Inulin Derivatives Prepared with Use of Acrylic Compounds and Their Uses, WO Patent 9634017, 1996a. 

Functionalized dienes can be obtained by C-C bond formation between 1,3-dienes and alkenes via oxidative coupling with electron-rich ruthenium catalysts but also via insertion into Ru-H and then Ru-C bonds. For example, Ru(COD)(COT) catalyzed the selective codimerization of 1,3-dienes with acrylic compounds to give 3,5-dienoic acid derivatives [18] (Eq. 13). -coordination of 1,3-diene to a hydridoruthenium leads to a 7r-allylruthenium species to selectively give, after coupling with the C=C bond and isomerization, the functionalized conjugated 1,3-dienes. 

The allylic activation of 1,3-dienes by Ru(COD)(COT) makes possible their hydroacylation to form /5,y-unsaturated ketones via C-H activation of aldehydes at the same metal center [117], and their selective coupling with acrylic compounds [18] (Eq. 87). 

Oleoresinous and solvent Oleoresinous and solvent Polyfunctional (acrylated) compounds Resin/solvent... 

Title Multifunctional (Meth)Acrylate Compound, Photocurable Resin Composition and Article... 

Organic dinitramines of the type RCH2CH2N(N02)2 with an electron accepting group (R = CN, CHO, COR, COOR, or NO2) eliminate ammonium dinitramide and acrylic compounds H2C=CHR during decomposition in aqueous solutions of ammonia. 

The nitrogen atoms of cyclic amines are readily substituted by reaction with nucleophiles (usually alkyl halides in base), or with Michael acceptors (usually acrylic compounds). A variety of TV-substituted cyclams, e.g., (54), (57), and homologues, has been prepared by reducing substituted dioxo cyclams (53) and (56). TV-Functionalization can be introduced for precursors before cyclization, e.g., (20), (24), (52), and (55), and the azacyclam macrocycles (74)-(79). 

Alksne and Smith described the novel use of an iron acrylic compound for the stereotaxic thrombosis of intracranial aneurysms in patients who were poor risk candidates for surgery. The compound polymerized rapidly, did not fragment and was non-toxic. Good results were reported in experimental animals and humans. 

Industrial acrylic compounds are derivatives of acrylic and methacrylic adds ... 

Acrylic compound Acrylic acid Methyl acrylate Ethyl acrylate Methyl methacrylate ... 

New acrylate and methacrylate monomer derivatives (meth) acrylate guanidines, methacryloyl guanidine and it s hydrochloride and also a number of model (meth) acrylate compounds (corresponding acids, salts and amides, methacryloyl chloride, methylmethacrylate, guanidine and it s hydrochloride) were investigated by NMR spectroscopy method. Structure of synthesized monomers was determined, and dependence of spectral characteristics on structure of investigated compounds and used solvent was shown. 

Separately, Gu et al. [46] reported the use of lipases to facilitate the synthesis of a family of polyaminoamides. The polyaminoamides were made by a two-step reaction, where the first step was Michael addition of 1 mole of a polyamine and 2 moles of an acrylic compound to form an amine-containing diester, and the second step was the polymerization of additional polyamine with the resulting diester prepolymer at 70-140 °C or in the presence of an enzyme at 60-80 °C. 

Unhindered acrylic compounds afford high yields of Baylis-Hillman adducts at ambient pressure whereas substituted acrylic nitriles and esters require high pressure to lead to functionalized ethylenic derivatives in fair to excellent yields (Table 10.14). 

By reduction of intermediate imines, A -substituents can be introduced in the primary amino alcohols. Thus, 3-f t/r)-benzylaminobomeol 37 was obtained by treatment of the primary amino alcohol with benzaldehyde/sodium borohydride42 and used for the formation of homoacrylic derivatives from the corresponding acrylic compounds via photochemical generation of enolates... 

Blends of PCTG with PC or SMA are typically injection molded into business machine, appliance and automotive parts but can also be extruded. Eilms of thickness 0.025 mm can be extruded and sheet thickness up to 3.2 mm is possible when conventional extrusion equipment is used. Typical processing conditions vary depending on film or sheet thickness. PP, HOPE or an acrylic compound is used for purging. 

It should finally be emphasized that the use of DPB is not restricted to acrylic compounds since it proved to be also a very efficient photoinitiator for the polymerization of vinyl monomers, like N-vinylpyrrolidone (NVP). In addition, DPB appeared to be particularly well-suited to photo-cure systems that need hydrogen abstraction type photoinitiators, like the thiol-polyenes resins (2), since it is then to be compared to the poor-performing benzophenone. 

---