Maleic anhydride-vinyl ether

Methyl vinyl ether-maleic anhydride copolymer [9011-16-9]... 

Methyl Vinyl Ether Maleic Anhydride CoDolvmer 5% crosslinked 0 17 2 10 31 36 49 41... 

Foams for woodland and grass fire-fighting have been developed with low drainage (water loss from foam) and high expansion (volume of foam per volume of starting liquid), two parameters traditionally considered to be inversely proportional. The stabilizing additive is poly (methyl vinyl ether/maleic anhydride), thought to cross-react with fatty alcohol components of the foam base via the anhydride function. 

B. Poly (methyl vinyl ether/maleic anhydride)... 

Vinyl Ether Maleic Anhydride Strong Good... 

Nair and Chien [44] compared patches and tablets of different polymers (sodium carboxymethylcellulose, carbopol, polyethylene oxide, polymethyl vinyl ether-maleic anhydride, tragacanth) regarding their release characteristics of four drugs (chlorheximide, clotrimazole, benzocaine, and hydrocortisone). They observed sus-... 

Thus, CPT is activated 50-fold by complex formation with S02, and hence the complex is the reactive species even though it is very dilute. These results are comparable with previous studies on vinyl ether-maleic anhydride system (14). 

As pointed out by Heller (2), polymer erosion can be controlled by the following three types of mechanisms (1) water-soluble polymers insolubilized by hydrolytically unstable cross-links (2) water-insoluble polymers solubilized by hydrolysis, ionization, or protonation of pendant groups (3) hydrophobic polymers solubilized by backbone cleavage to small water soluble molecules. These mechanisms represent extreme cases the actual erosion may occur by a combination of mechanisms. In addition to poly (lactic acid), poly (glycolic acid), and lactic/glycolic acid copolymers, other commonly used bioerodible/biodegradable polymers include polyorthoesters, polycaprolactone, polyaminoacids, polyanhydrides, and half esters of methyl vinyl ether-maleic anhydride copolymers (3). 

Figure 9 Relationship between pH of dissolution and size of ester group in half-esters of methyl vinyl ether-maleic anhydride copolymers. (Reproduced with permission from Ref.

Figure 10. Release of naltrexone from the n-hexyl half-ester of methyl vinyl ether-maleic anhydride copolymer at pH 7.4 and 37°C. Disks 5.5 x 0.75 mm naltrexone loading 10 wtj.

Fig. 5.3 The IR spectrum of methyl vinyl ether-maleic anhydride copolymer represented by different number of FCs and HCs. The original consists of 512 intensity values. After the transformation, the coefficients are truncated step by step as shown in Fig. 5.2 the number of the remaining coefficients is shown beside respective steps. The reduced representations are then transformed back to 512 intensity values and plotted.

Similar results have been noted in terpolymerizations involving the p-dioxene-maleic anhydride (49, 51, 52) and vinyl ether-maleic anhydride (45, 49) and vinyl ether-fumaronitrile (49) monomer pairs. Iwatsuki and Yamashita (46) concluded that the molecular complex formed between p-dioxene and maleic anhydride is attacked on the p-dioxene side by a radical to yield the maleic anhydride radical which is considered to be the main growing radical. Thus, a monoradical propagation step is considered operative. 

Satoh A, Kojima K, Koyama T, Ogawa H, Matsumoto I. Immobilization of saccharides and peptides on 96-well microtiter plates coated with methyl vinyl ether-maleic anhydride copolymer. Anal. Biochem. 1998 260 96-102. 

Configurational Statistics of Methyl Vinyl Ether-Maleic Anhydride Copolymer. ... 

Poly(methylvinyl ether/maleic anhydride) and related free acids are hygroscopic powders and therefore excessive exposure to moisture should be avoided. Aqueous solutions exhibit decreases in viscosity upon exposure to UV light. Polyfmethyl-vinyl ether/maleic anhydride) should be stored in a cool, dry place out of direct sunlight. 

J. L. Zatz, N. D. Weinder and M. Gibaldi. Monomolecular him properties of protective and enteric film formers. 11. Evaporation resistance and interactions with plasticizers of poly (methyl vinyl ether-maleic anhydride). /. Pharm. Set., 58, 1493-6 (1969)... 

PVP forms molecular adducts with many substances. Insoluble complexes are formed when aqueous solutions of PVP are added to tannic acid, poly(acrylic acid) and methyl vinyl ether-maleic anhydride copolymer. Soluble complexes, called iodophors, are formed with iodine the solubility of iodine is increased from 0.034% in water at 25°C to 0.58% by 1% PVP. The resulting iodophor retains the germicidal properties of iodine. It is thought that the iodine is held in a PVP helix in solution. The influence of two samples of PVP on the solubility of testosterone is shown in Fig. 8.21. The PVP correspondingly increases the rate of solution of the steroid from solid dispersions. 

TWO organometallic polymers previously developed, tributyl-tin methaczylate/methyl methacrylate copolymer (TBTM/MeM) and the tributyltin ester of methyl vinyl ether/maleic anhydride (TBT-MVEt-MAn), were selected for use as wood impregnants. Full Cell and Enpty Cell Methods were used to treat wood with TBTCVMeM in "Rule 66" mineral spirits and in combination with P13 creosote. Although the polymers seem to be miscible with the creosote, this combination results in only surface penetration of wood when... 

Even though partially esterified copolymers of methyl vinyl ether-maleic anhydride copolymers were orignally designed to dissolve abruptly with an increase in external pH, in a constant pH environment they undergo a controlled dissolution process and are therefore useful materials for the controlled release of therapeutic agents dispersed within them (12),... 

Figure 4, Rate of polymer dissolution and hydrocortisone release from n-butyl half-ester of methyl vinyl ether-maleic anhydride copolymer containing 10 wt% drug, (Reprinted with permission from Ref. 12. Copyright 1980, John Wiley ...

U.S. 5188752 (1993) [58] Prencipe et al. (Colgate-Palmolive) Crosslinked methyl vinyl ether—maleic anhydride copolymer fatty acid/salt Linear, viscoelastic... 

Vinyl ether-maleic anhydride Volatile organic compound Vacuum ultraviolet X-ray photoelectron spectroscopy... 

Polymers for use in 193 nm lithography are co-, ter-, and tetra-polymers of 1) methacrylates, 2) norbornenes, 3) norbornene-maleic anhydride, 4) nor-bornene-sulfur dioxide, and 5) vinyl ether-maleic anhydride (Fig. 39). While 1), 3), 4), and 5) are prepared by radical polymerization, all-norbornene polymers 2) are synthesized by transition-metal-mediated addition polymerization [166-168].Norbornenes (Fig.40) are sluggish to undergo radical [168,169] and cationic [170] polymerizations. Their ring-opening metathesis polymerization (ROMP, Fig. 40) [ 171 ] has never produced worthy resist polymers. The C=C double bonds introduced in the ROMP polymer backbone must be hydrogenated to reduce the 193 nm absorption and the ROMP polymers tend to have low Tg. However, the major problem for the ROMP polymers was their unacceptable swelling in aqueous base development. While polymethacrylate systems contain etch-resistant alicyclic structures in the ester side chain, norbornene-based systems carry the alicyclic unit in the backbone. Essentially all the 193 nm re-... 

A recently developed version of the methacrylate resist polymer platform is based on the radical copolymerization of vinyl ether, maleic anhydride, and acrylate monomers bearing appropriate functional groups. Linear or cychc alkyl vinyl ethers have been copolymerized with methacrylates bearing deprotectable ester groups (XXXV). 

Acrylate terpolymer comprising vinyl ether, maleic anhydride, and alicylic monomers (XXXV), developed at Samsung/Rohm Haas ca. 2001. 

The components of the copolymers are cycloaliphatic monomers (norbor-nene), and vinyl ether, maleic anhydride, acrylate, and methacrylate. In addition, vinyl sulfonamides have been used as co-monomers in the synthesis of random copolymers capable of functioning as acid-amplified resists. An example is presented in Chart 9.5. A high sensitivity, S = 2mJ cm, was measured for a copolymer (Chart 9.5) with n=0.4 and m=0.6 (resist thickness d=220nm, developer aqueous tetramethylammonium hydroxide solution). Triphenylsulfonium perfluoro-1-butane sulfonate served as acid generator [33]. 

Polymethyltetradecylsiloxane. See Polytetradecylmethylsiloxane Poly (methylvinyl ether). See Polyvinyl methyl ether Poly (methyl vinyl ether-alt-maleic anhydride) Poly(methyl vinyl ether/ maleic anhydride). See PVM/MA copolymer... 

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