Acrylate-Modified Epoxy

Liquid rubber Optimum concentration Curing agent Improvement in property Reference [Pg.250]

Reprinted with permission from D. Ratna and G. R Simon, Polymer, 2001, 42, 7739. 2001, Elsevier Publishing Company [Pg.252]

A decrease in toughness above an optimum value of the functionality of the liquid rubber can be explained in terms of solubility parameter and chemical interactions. The solubility parameter of epoxy is higher than acrylate rubber (PEHA). With the introduction of carboxyl functionality the solubility parameter of the acrylate oligomer increases. When the functionality reaches an optimum value, the solubility parameter difference between the epoxy and acrylate rubber becomes less than 0.1. As [Pg.253]

Bailey, M.A., Cauffman, T. and Costin, R. (1996) New developments in acrylates modified epoxy-amine cure coatings, paper presented at FCST International Coatings Technology Conference, 23 October, 19%. [Pg.213]

The acrylic modified epoxy copolymer can be neutralized via the pendant carboxyl groups to provide a water-dispersible system with good hydrolytic stability. The grafting is presumed to occur onto the methylene hydrogens of the glycidyl group in the epoxy resin ... [Pg.306]

Acrylate modifier epoxy - high reactivity with amines 85-115 2... [Pg.212]

Acrylate modified epoxy - higher reactivity with amines 800-1100 2... [Pg.212]

UV-sensitive adhesives are based on acrylate-modified epoxy resins, polyurethane, and amongst others, polymers. They are single-component reactive adhesives, which undergo rapid polymerization upon irradiation with UV light with wavelengths ranging from 400 to 500 nm. These adhesives should be stored in small opaque containers of up to 50 mL in volume. They can be stored in their original containers for 6 months at 10-25°C. [Pg.934]

S02-cured epoxy resin. Modified epoxy/acrylic resins (1.2 to 1.4% of sand weight) are mixed with organic peroxide (26 to 60% of resin weight), the mixture is blown into the core box and a hardening mechanism similar to the S02 process takes place. [Pg.160]

Studies of the particle—epoxy interface and particle composition have been helpful in understanding the rubber-particle formation in epoxy resins (306). Based on extensive dynamic mechanical studies of epoxy resin cure, a mechanism was proposed for the development of a heterophase morphology in rubber-modified epoxy resins (307). Other functionalized mbbers, such as amine-terminated butadiene—acrylonitrile copolymers (308) and tf-butyl acrylate—acrylic acid copolymers (309), have been used for toughening epoxy resins. [Pg.422]

An acrylate-terminated polyurethane modified epoxy compound and a polyethylene polyamine homologue and fatty acid combination were formulated into a two-component adhesive system. The adhesive is useful for bonding various thermoplastic resins such as ABS, PC, PBT-PC blends, and PPO.22... [Pg.133]

Most of the radiation curable raw material technology is based on acrylic or methacrylic acid deritive but may also include modified epoxies, polyesters, and polyurethanes. Thus the backbones of radiation curing and conventional coatings are similar. [Pg.52]

Another development has been reported by P.A. Lucas, W.E. Stamer and S.G. Musselman of Air Products and Chemicals Inc. (Lucas et al., 1994). An acrylate functional urethane flexibiliser has been used to modify epoxy resin, which optimises reactivity and is more compatible with epoxy. Urethane-acrylate flexibiliser offers very tough hybrid epoxy systems meeting the more demanding requirements of civil engineering applications. [Pg.206]

The electron beam curing of coatings has for some time attracted a great deal of attention since It Is claimed that coatings can be fully cured In a fraction of a — second. The coatings are primarily based on the cross-linking of acrylic or epoxy resins In a polyurethane or polyester base (l.e., modified paints). [Pg.111]

Polycarbonate Conventional adhesives recommended include epoxies, modified epoxies, polyurethanes, acrylics, RTV silicones, cyanoacrylates, one-part elastomers, some epoxy-polyamides, and hot melts (13). [Pg.273]

Poly butylene Terephthalate (PBT) Commercial adhesives recommended include modified epoxies, cyanoacrylates, acrylics, polyurethanes, silicone, and polyesters. [Pg.274]

Phenolic Adhesives recommended are neoprene and urethane elastomer, epoxy and modified epoxy, phenolic-polyvinyl butyral, nitrile-phenolic, polyester, cyanoacrylates, polyurethanes, resorcinols, modified acrylics, polyvinyl acetate, and urea-formaldehyde (1). [Pg.275]

TEM was used to study the toughening mechanism in rubber modified plastics. A crack tip of a damaged sample of an acrylic rubber modified epoxy resin was observed [Sue et al., 1993]. [Pg.554]

Ariga (45) disclosed developments with CTBN-modified epoxy acrylates which when prepared with other lower molecular weight dicarboxylic acids and select carboxyl-terminated oligopolyesters serve as novel oligomers for photocurable coatings. These systems have low uncured viscosity. In the cured state they possess excellent scratch and crosshatch adhesion, good direct and reverse impacts (duPont impact tester) and pass bending diameters of 2 mm. [Pg.10]

Figure 12. Isothermal scan at 150 degrees C for UV cured films of epoxy acrylate modified with AM.

For many years, paints used to coat cans contained considerable amounts of volatile organic solvents. Waterborne can coatings were developed to reduce solvent emissions and are used worldwide. Binders used in waterborne can coatings are modified epoxy resins (see Section 2.10). Acidic acrylate chains are grafted onto an epoxy molecule. After partially neutralizing with amines, the resins can be dispersed in water. [Pg.261]

Chem. Descrip. Modified epoxy acrylate resin Uses Pigment wetting agent in overprint varnishes, wood coating base coats... [Pg.20]

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