Dodecenyl succinic anhydride

Shell Epon 828 epoxy resin was cured with 13 PHR (parts per hundred of epoxy) of triethylene tetramine as a typical polyamine, 65 PHR of Shell Epon V-15 polyamide as a typical polyamide, or 130 PHR of dodecenyl succinic anhydride as a typical anhydride. Liquid formulations were cast in 5iluminum molds and oven-cured as follows ... 

Epon 812 substitute and Epon A 62 mL Epon 812 substitute and 100 mL dodecenyl succinic anhydride (DDSA) Epon B 100 mL Epon 812 substitute and 89 mL nadic methyl anhydride (NMA) mix together 10 mL Epon A and 15 mL Epon B add 0.5 mL 2,4,6-tri (dimethylamino-methyl) phenol (DMP-30), and mix well (see Note 4). 

DSA dodecenyl succinic anhydride, DMP30 2,4,6-tris (dimethlaminomethyl) phenol h MDA methylene dianiline 1 MTHPA methyl tetrahydrophtalic acidanhydride i 2E4Mz 2-ethly 4-methylimidazole... 

Dodecenyl Succinic Anhydride. [Humphrey] Alkenyi succinic anhydrides intermediate for producing amide and imide rust inhibitors, sludge dispersant for lube oils and greases, industrial cleaners epoxy hardener, mercurial fungicide. 

DSA, dodecenyl succinic anhydride BDMA, benzyldimethylamine NMA, nadic methyl anhydride EMPOL 1040, proprietary flexibilizer Versamid 140, proprietary flexi-... 

Supported by the Naval Ship Research and Development Center, Annapolis, Maryland, t DSA, dodecenyl succinic anhydride BDMA, benzyldimethylamine NMA, nadic methyl anhydride. The use of trade names in no way implies endorsement or approval by NBS and is included only to assure complete identification of specimen materials. 

Chem. Descrip. Dodecenyl succinic anhydride (C12-branched)... 

Trade Name Synonyms n-Dodecenyl Succinic Anhydride [Heico... 

Some 30 years after Bresler, Beredjick reported the details of an ultraviolet (UV) light-induced 2-D polymerization at the air/water interface. Oligomeric components were used as monomers which had been prepared from dodecenyl succinic anhydride, maleic anhydride and propylene glycol by solution condensation, such that each oligomer on average carried 1.5 olefinic units. These monomers were then transferred to the air/water interface and crosslinked by radical polymerization. Unfortunately, very litde proof was provided regarding the achievement of a 2-D crosslinked polymer [71]. 

Liauw et al. [23] found that when dodecenyl succinic anhydride was adsorbed onto aluminum hydroxide at 50 °C, most of the interaction was through acid groups formed by hydrolysis and there was little salt formation, with carboxylate salts appearing only at higher temperatures. Monolayer coverage levels were determined... 

Tabtiang and Venables studied the reaction of dodecenyl succinic anhydride with calcium carbonate, using dry blending [10]. They found that the anhydride was largely converted to the carboxylate salt, with htde or no evidence of any remaining anhydride or free acid. The effects in polypropylene were those associated with a noncouphng additive, even when peroxide was present in the coating. 

Epoxy resins were introduced in 1956 in the preparation of samples for electron microscopy (Goransson 1977 Jolanki et al. 1988) and they are still widely used. Three types of epoxy resin are used the DGEBA epoxy resins, the diglycidyl and triglycidyl ethers of diols and polyols, and vinyl cyclohexene diepoxide resin. The epoxy resins are generally hardened by anhydrides (dodecenyl succinic anhydride), using amines (tris-DMP) as accelerators... 

A few reports of contact allergy to non-amine hardeners have been published in the case of dicy-andiamide (Senff et al. 1988), dodecenyl succinic anhydride (Goransson 1977), methylhexahydrophthalic anhydride (Kanerva et al. 1997), hexavalent chromate, an accelerator additive (Handley and Burrows 1994 Bruze et al. 1996) and polysulfides (Bruze et al. 1996). 

Goransson K (1977) Allergic contact dermatitis to an epoxy hardener dodecenyl-succinic anhydride. Contact Dermatitis 3 277-278... 

White spirit or xylene were suitable solvents with bis-phenol A diglycidyl ether (Epikote 828), xylene with a low molecular weight oligomer, Epikote 834,and a stronger solvent such as Cellosolve acetate (optionally with xylene) with a higher molecular weight oligomer, Epikote 1001. Xylene was required in reactions with phthalic anhydride but white spirit could be used with tetrahydrophthalic anhydride and dodecenyl succinic anhydride. 

Resins based on tetrahydrophthalic and dodecenyl succinic anhydride (but not phthalic anhydride) were white spirit tolerant. The solutions, however, were rather viscous at about 50-60% concentration and, to obtain compositions with suitable brushing properties, it was necessary to add diacetone alcohol (or butanol) to give a 3 1 ratio of white spirit to diacetone alcohol in the final solution. 

EPON. Put 20.0 g EPON, 13.0 g Dodecenyl succinic anhydride (DDSA) and 11.5 g Methyl nadic anhydride (MNA) into the same test-tube. Heat the tube in the oven for 2-3 min at 60° and then vortex it well. Add 0.9 g tri-Dimethylaminomethyl phenol (DMP-30, all from Electron Microscopy Sciences, Fort Washington, PA) and immediately vortex the tube again. It is possible to freeze the EPON in aliquots and to store it for a long time at -20° before use. 

Flexibilisation of a formulation can also be achieved by using flexi-bilising curing agents or other additives. These materials are similar in their basic structures to the flexible epoxide resins and usually have reactive end groups separated by flexible long chain molecular segments. A typical example is dodecenyl succinic anhydride which has the structure... 

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