Acrylic Modifiers

Acrylic impact modifiers are used for rigid PVC (particularly for weatherable building applications) and for engineering thermoplastics (polyamides, PC, PBT, PET). 

Type Application Some typical brand names 

Styrenics Mainly for styrenes and ABS latest types also for polyolefins and engineering plastics can also be used with SMC/BMC Kraton G - Shell 

Olefinic Mainly for PE and PP also for PBTs function as compatibilizers Outral-Ausimont Nordel IP - DuPont/Dow Royaltuf- Uniroyal Exxelor. Escor AT - Exxon 

Polybutadiene PS, ABS Diene - FirestoneKrynac - Bayer Taktene-Bayer 

Arkema s Clearstrength 303H is a methyl methacrylate-butadiene-styrene modifier for unplasticised PVC. Rohm and Haas introduced an all-acrylic impact modifier, called Paraloid KM-348, to the American PVC market in 2001. It was claimed to perform well at lower dose levels than the competition, and was also intended to improve processing by lowering the melt temperature, die pressure and torque level. 

Eliokem introduced two new acrylate terpolymers in granular form in 2002 under the name Sunigum . One is for polar polymers and the other for nonpolar ones. They give thermoplastics a soft touch and a rubber-like appearance, but they also improve heat ageing and weathering. 

BASF has introduced an ASA impact modifier called Luran S 778TE, with a heat distortion temperature of 105 °C. It is said to have excellent outdoor resistance. 

Arkema s Durastrength 500 combines the functions of an impact modifier and a process aid. It is intended for exterior construction products, offering high compatibility with PVC and low plate-out. It is self-lubricating as well as acting as a stabiliser, and it removes the need to use paraffin wax as a lubricant. 

Another Rohm and Haas product, Paraloid KM-348, is claimed to perform well at low dose levels. It also improves processing by lowering the melt temperatme, die pressure and torque level. 

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Electron beam-curable acrylate-modified colored polyurethanes. (Goodyear Tire and Rubber Co., USA). Jpn. Kokai Tokkyo Koho (1984), 4 pp. CODEN JKXXAF JP 59066413 A 19840414 Showa. Patent written in Japanese. Application JP 83-165284 19830909. Priority US 82-419864 19820920. CAN 101 73632 AN 1984 473632 CAPLUS. 

Basic Acrylic, modified Applied from acidic Known as cationic... 

An acrylate modified vinyl chloride - vinylidene chloride latex copolymer (Haloflex 202) has been developed in our laboratory (1,2) specifically for the preparation of water-borne anti-corrosive primer paints. This carefully designed copolymer, hereafter... 

Synthesis of Urethane Modified Acrylics and Acrylic Modified Urethanes. 1) Synthesis of PBH. Into a reaction kettle equipped with a nitrogen inlet, stirrer, reflux condenser, and an addition funnel charged 500g of xylene. The xylene was heated to reflux and a mixture of 375g butyImethacrylate (BMA), 125g of 2-... 

Another manufacturing method involves irradiation by UV light, in which acrylic-modified polyurethane resins are used. Reactive fluorinated oligomers are reviewed in Reference 36. 

Figure 6.60 Generic acrylate-modified poly(fluorooxetane) reactive surfactant.

Acrylic modifiers for cement impact strength and adhesion to substrates are discussed in reference 211. Both water-soluble acryHc and acrylic emulsion polymers are used in tHe ceramic industry7 as temporary7 binders, deflocculants, and additive components in ceramic bodies and glazes (212) (see Ceramics). 

The primary mode of bonding for a pressure-sensitive adhesive is not chemical or mechanical but rather a polar attraction to the substrate. This always requires pressure to achieve sufficient wet-out onto the surface thereby providing adequate adhesion. The four main varieties of pressure-sensitive adhesives are derived from rubber-based, acrylic, modified acrylic and silicone formulations. Release liners are used to carry the sticky label and enable it to be printed. The release liners are normally paper, treated with a very thin silicone coating to allow the label to be peeled away easily without tearing. Some transfer of the silicone into the adhesive is inevitable. 

Acrylic-modified cementitious products excellent bond strength water resistance resistance to ultraviolet radiation low water/cement ratio superior handling and application properties various, depending upon type of product repair mortars floorings tile adhesives renders coatings, etc. 

Acrylic-modified asphalt resistance to surface cracking, chalking and ultraviolet radiation flexibility oil and gas resistance parking lots off-highway streets highway shoulders... 

Figure 5,8 The comparative durability of polymer-modified cements. - - -. - = unmodified cement -------= acrylic-modified cement ------= styrene-butadiene-rubber-modified...

Table 5.9 Properties of acrylic-modified mortars compared with unmodified mortars. Source Tsai, M.C, Burch, M.J. and Lavelle, J.A., Solid grade acryhc cement modifiers, in Polymer Modified Hydraulic Cement Mixtures, ASTM STP 1176 (eds L.A. Kuhlam and D.G. Walter), Table 2 published by the American Society for Testing and Materials, Philadelphia, PA, 1993...

It is important that acrylic-modified cement mortars be marketed based on their end-use for example mortars for concrete repair and for use as ceramic tile adhesives are sold as separate products. Therefore, one should not become confused that a single mortar is used for all of the above-mentioned functions. 

Acrylic-modified cement coatings protect atmospherically exposed reinforced concrete structures from attack by chloride ions, oxygen and water. 

Generally, modification is made by adding approximately a 15% level of acrylic latex. Modified asphalt displays improved properties. Acrylic-modified asphalts are used for parking lots, driveways, low-voliune off-highway streets and highway shoulders. 

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%. 

Lustrasol [Reichhold]. TM for acrylic and acrylic-modified alkyd solutions. 

Treatment of ultrafine talc with an acrylic modifier for use as a filler in rigid PVC always resulted in a gradual decrease of flexural modulus as the modifier concen-... 

Vinyl- or acrylic-modified alkyds have been prepared by three distinct methods (10) (1) blending of the two polymer entities (2) copolymerization, or partial copolymerization, involving the unsaturation of the fatty acids and (3) chemical combination of the polymers by other functional groups, which usually results in an ester linkage between the components. 

Acrylic-Modified Alkyd Resins—Technical Bulletin" ... 

METABLENTm A3000 (ACRYLIC-MODIFIED POLYTETRAFLUOROETHYLENE, PTEE)... 

Across the grain, 365, 367 Acrylic foam modifier, 91 Acrylic Metafile series P, 173 Acrylic Metablen series L, 173 Acrylic-modified polytetrafluoroethylene, 163, 173... 

Marvaloy. [Marval Industries] Acrylic-modified Styrene for inj. molding and extrusion specialty medical, pharmaceutical, fo and cosmetic pkg., advertising displitys, high-strength toys. 

Modar. [ICI Acrylics] Modified acrylic resins for resin transfer molding, filament winding, hand lay-up, spray-up, pultrusion. 

Yoracryl. [Yorkshire Pat-Chem] Cationic basic dyes for acrylic, modified acrylic, and other fibers. 

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