Acrylic anhydride, physical properties

In order to improve the physical properties of HDPE and LDPE, copolymers of ethylene and small amounts of other monomers such as higher olefins, ethyl acrylate, maleic anhydride, vinyl acetate, or acryUc acid are added to the polyethylene. Eor example, linear low density polyethylene (LLDPE), although linear, has a significant number of branches introduced by using comonomers such as 1-butene or 1-octene. The linearity provides strength, whereas branching provides toughness. 

Linseed oil presented another interesting opportunity for the production of bioplastics. The highly polyunsaturated nature of the oil allowed for a large number of reactive sites to be introduced onto the material for subsequent polymerization. As has previously been mentioned, this increased reactivity has been shown to limit the physical properties of the materials and as such there has been little commercial interest in taking these materials further. Epoxida-tion, acrylation and maleinization of linseed oil before polymerization produced a heavily crosslinked polymer [59]. A formulation for potential in infusion resins was developed with a mixture of epoxidized linseed oil and phthalic anhydride with the curing catalysed by 2-methylimidazole [60]. 

E. A. Neubauer, D. A. Thomas, and L. H. Sperling, Effect of Decrosslinking and Annealing on Interpenetrating Polymer Networks Prepared from Poly(ethyl acrylate)/poly-styrene Combinations, Polymer 19(2), 188 (1978). Decrosslinking of PEP/PS IPNs. Hydrolysis of Acrylic acid anhydride. Morphology and physical properties. 

Poly(maleic anhydride-co-acrylic acid), grafting to poly(ethylene-co-vinyl acetate), 683 Poly(maleimides), 91 physical properties, 265 Poly(/-menthyl vinyl ether-alt-MA), optically active polymer, 317 Polymer blends... 

The history of the development and chemistry of various resist polymer platforms of ArL resist materials has been reviewed in detail elsewhere,as well as in Chapter 7. Here, we briefly summarize the main attributes of each platform with a view to relating aspects of their physical and chemical properties to lithographic and etch performance. Figure 13.39 shows the three main polymer platforms [acrylate, cycloolefin (CO), and cycloolefin-maleic anhydride (COMA)] on which most of the commercially available ArF resists today are based. 

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