Styrene and methacrylic acid

Copolymer particles can also be prepared from HIPEs [159]. Thus, a HIPE dispersed phase consisting of styrene and methacrylic acid was polymerised to give copolymers. The surface concentration of carboxylic acid groups increased linearly with concentration of methacrylic acid in the feed. The small amount of water present in the concentrated emulsion, relative to conventional emulsion polymerisation, reduces the loss of methacrylic acid, which is highly water-soluble. 

Copolymerization of Styrene and Methacrylic Acid in Concentrated Emulsions [22J... 

In the present section, the copolymerization of styrene and methacrylic acid in a concentrated emulsion in which water containing SDS constitutes the continu-... 

The current work was concerned with the emulsion copolymerization of vinyl ferrocene with butyl acrylate, styrene, and methacrylic acid to yield a film-forming composition of Tg 0-5 C. 

Different polystyrene-bound biscyclopentadienyl complexes have been prepared. One example is shown as 69 in Eq. 5-9 [180]. Treatment of soluble copolymers of styrene and methacrylic acid with dichlorotitanocene resulted in soluble titanium-containing copolymers 70 (Eq. 5-10] [181]. Finally polymeric organometallic mesogens 71 with [l,3-(diethynyl)cyclobutadiene]cyclopentadi-enyl Co(II) moieties were prepared by Heck coupling of a corresponding cyclobutadiene monomer with 2,5-diiodothiophene [182],... 

In the studies at Lehigh the thermoplastic elastomer Kraton G served as polymer I (see Fig, 1). Styrene and methacrylic acid were dissolved into the Kraton G, and polymerized in situ. 

SMAA Copolymer from styrene and methacrylic acid... 

The radius of gyration of the add form was found to be similar to that of the untreated polystyrene, but the of the salt form was greater than that of the add and increased with salt concentration. The increase in implied that the salt groups associated into clusters, distribution of cluster sizes was expected to be large, with an appreciable number of isolated ion pairs. The polyelectrolytic copolymer of styrene and methacrylic acid was found to cluster in the add form at high polymer concentrations, and R was found to decrease with increasing polymer concentrations in both the add and salt forms. ... 

Like SAA resins, the water-soluble or water-dispersible terpolymer of allyl propoxylate, styrene and methacrylic acid can be used in water borne polyurethan, melamine, polyester, and many other water borne coatings and thermoset polymers to improve performance. 

Copolymerization of Allyl propoxylate, Styrene and Methacrylic Acid 500... 

More important and with better properties are the cold-setting, two-component acrylate adhesives, which contain methacrylates or acrylates, sometimes mixed with styrene and methacrylic acid as monomer and, in addition, various polymers. The polymers used are primarily synthetic rubbers, such as polychloroprene, styrene-butadiene rubber, butyl rubber, polystyrene, polymethacrylates, and acrylate graft polymers of these polymers. Amines are used as accelerators, and benzoyl peroxide in the form of plasticizer pastes or a powder mixture with fillers is preferred as hardener [43]. 

In a recent study, Tuncel and Serpen [86] used a macromonomer of a very short polyoxyethylene chain (n = 3) and an ethyl methacrylate polymerizable group, which was applied to emulsion copolymerization of styrene and methacrylic acid. The effects of concentrations of reactants on the particle size and on the polymerization rate were studied in detail, but no data concerning the stability of the latexes have been reported. 

Polystyrene-based ionomers have been extensively studied. These materials can be prepared either by post-reaction modification or by copolymerization. One method of preparation is to copolymerize styrene and methacrylic acid using benzoyl peroxide as the free radical initiator. Following reaction at elevated temperature (ca. 80 ""C), the product is dissolved in benzene and titrated with sodium hydroxide in methanol to effect neutralization. 

The surface modification of fillers with polymeric substances is discussed with reference to improvement of the properties of filled polymers. When the fillers are modified with polymers, the boundary layer contains not only the matrix filler, but also the modifying polymer, and when the modifying polymer interacts with the surface filler, the properties of both the mineral component and the modifier are altered. One characteristic which reflects the result of polymer-filler interaction is the glass transition temperature of the modifier. To determine this parameter for a very low content of polymer, the method of inverse gas chromatography was used using the modified filler as the stationery phase. The study investigated the use of travertine and tuff, the surfaces of which were modified with latices of a copolymer of styrene and methacrylic acid. 3 refs. (Article translated from Plasticheskie Massy, No.8, 2000, p.36)... 

The emulsion copolymerization of styrene and methacrylic acid in the presence of a new polymerizable macromonomer based on PEG as stabilizer is proposed by Hincel and Serpen [55] to obtain larger and more surface-carboxyl-charged monodisperse particles relative to those obtained by the same emulsifier-free emulsion copolymerization. 

Tuncel, A. and Serpen, E. 2001. Emulsion copolymerization of styrene and methacrylic acid in the presence of a polyethylene oxide based-polymerizable stabilizer with a shorter chain length. Colloid Polym. Sci. 279 240-51. 

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