10. of 0.87, and a density of 0.965 is ma~eated in p-xylene using maleic anhydride (5% based on polyethylene) and 2,5-dimethyl-2,5-di(t-butyl peroxy)hexane (0.73~ based on polyethylene) using the procedure described in Example 1. Unique wax additives are available to protect a high gloss powder coating surface from abrasion damage … 11. This material has a melt index of 10.3, I.V. as a coupling agent in polymer composites, involves reacting polypropylene with maleic anhydride and peroxide initiator at elevated temperature in the solid state, Polymeric coating mixture, method for applying this coating mixture to a metallic base for protecting an edge or a part, protective layer, a base coated in this manner and the use thereof, Polyolefin compositions comprising bio-based starch materials, Easy-open container and container coating, Highly abrasion-resistant polyolefin pipe, Highly abrasion-resistant grafted polyolefin pipe, Process for preparing free flowing epdm particles, Method to form an aqueous dispersion of an ionomer-polyolefin blend, High-adhesion polyethylene powder coating, Aluminum article covered by maleic anhydride modification polymers, Polymer oxidation process and emulsion therefrom, Modification of crystalline propylene polymers, Reaction products of unsaturated dicarboxylic acids,anhydrides,esters with degraded poly - alpha - olefin polymers, Aqueous dispersion for coating and coated articles, Process for the grafting of monomers onto polyolefins, Method of obtaining polymeric coating on metal substrate, Modified chlorinated polyolefins, aqueous dispersions thereof and their use in coating compositions, Adhesive blends and composite structures comprising acid or anhydride modified PE + hope + polypropylene, Cross-linkable hot-melt adhesive and method of producing same, Solid coating composition for textile floor coverings, Precross-linked silicone elastomer particles with organopolymer shell as formulation constituent in powder coating materials, Blends containing polyethylene and an unsaturated polycarboxylic acid modified polyolefin, Coating compositions containing a polyoxide and process for preparing this, Filler-containing polypropylene resin composition and process for producing the same, Crosslinkable polymer powder and laminate, Thermosetting powder coating compositions containing flow modifiers, Concentrates suitable for the preparation of functionalized polyolefins and functionalization, Polypropylene resin composition containing filler, Chlorine-free and reduced chlorine content polymer and resin compositions for plastic bonding, Water-based one-pack-type coating composition and coated article, Uv curable non-chlorine adhesion improvers, Adhesion promoter compositions for polyolefin substrates, Water-based paint composition and coated article thereof, Coating composition for polyolefin resin and process for producing the same, Process for preparing finely divided polymers. They are less toxic and need very low maintenance. Polyvinyl Chloride (PVC) 2. EN 14901-2:2019 - This document defines the requirements and test methods for factory applied thermoplastic acid modified polyolefin (TMPO) coatings used for the protection of ductile iron fittings and accessories according to EN 545, EN 598, EN 969, EN 12842 and EN 14525: - conveying water (e.g. The polymer is stripped and stabilized with 0.2% DLTDP and 0.2% pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] as described in Example 1. for 10 minutes. .~ . For use in powder coating, the polyolefins must have a particle size of 250 microns diameter or less, preferably 150 microns or less. ~; . . The white, powdery product is placed in a large Pyrex dish and stabilized by thoroughly wetting with a 120 ml. In other cases where higher melt flow polypropylene is employed, e.g., up to about 60 or more, it is usually necessary to lower the peroxide con-centration and employ milder reaction conditions. 58) are not as flexible as those made from maleated polypropylene in which high-molecular-weight polymer (low melt flow rate polymer) is simultaneously maleated and degraded in molecular weight to provide material with M.F. They blow air across the top of the pickup tube, which creates a negative pressure. and 30 a saponification number of 2 to 12, preferably about 4-8. The reaction mixture (partially gel) is then poured into 4000 ml. CH3COOH x N~-~ml. of p-xylene solution containing 1.82 g. 2,5-dimethyl-2,5-di(t-butyl per- `oxy)hexane (available commercially as Lupersol 101) (0.0025 mole/100 g. of polymer) are added in a rapid dropwise manner ~ `from the dropping funnel. Heat under reflux for 45 minutes. of 56 as in Example 2. The Yext script you entered is empty or incorrect: . screen. 1. as determined by AS~M D-1238 of from about 0.1 ~, to about 60à Representative technology for preparing such .polypropylene is found, for example, in the disclosures of U.S. lb.) :~, . . Such carboxylated polyolefins can be prepared by ~eacting a polyolefin, such as polypropylene, ancl an unsaturated dicaLboxylic component to prepare a carboxylated polyolefin having a saponification number of about 2 to 12.Surface coating powders presently in commercial use generally comprise compositions based on poly(vinyl chloride)~ polyamides, plasticized cellulose acetate butyrate, certain polyesters which may contain flow aids such as modifying polymeric materials, and cross-linkable epoxy resins.Though useful, these materials have one or more drawbacks such as softness of the final coating, requirement of primer, need for a volatile plasticizer which causes fumes during curlng, need for high curing temperatures, and need for flow aids. Powder (80/20 (front/reverse).The fused powder coating of unmodified high density polyethylene (melt index 32) has poor appearance, poor ad-hesion (failed crosshatched cellophane tape test), poor : .flexibility (failed conical mandrel test) and poor impact resistance [Gardner impact strength of ~10/~10 (front/-reverse)]. A powder coating composition according to Claim 4 wherein said melt flow is from about 55 to about 100 g./10 minutes at 230°C. , and has a conditioned density as determined by ASTM D-1505 - of at least about 0.90 up to about 0.93 and a melt flow rate ~M.F.) 2. One ;particular graft copolymer which has an excellent combination of properties has a saponification number of 4 to 8 and an `~M.F. :, : '1 : ~ : ' ' ;' i~'' ~-. When electrostatically spray coated on unprimed bonderized steel ., .test panels and fused at 350F., it provides a smooth coating having no craters or orange peel. of acetone to . hot air - circulating oven for 10 minutes to allow the powder to fuse and flow out. However, they also have certain properties that are very attractive in many applications. to provide smooth coatinys which have such properties as good appearance, adhesion, flexibility, toughness, impact strength and the like. When cryogen:ically ground to less than about 20 mesh size powder, these carboxylated materials can be conveniently coated on substrates using a fluidized bedcoating process and, when ground to less than about 100 mesh size powder, can be electrostatically spray coated onto substrates such as metal panels including un primed steel or alumin~, and other such suitable chargeable substrates. Preferably, j at least 75 mole percent of the unsaturated dicarboxylic acid component ~ -~: ~is derived from maleic anhydride. . For example, stabilizers, fillers and pigments are preferably added to the graft copolymers in extruders or Banbury mixers. of from 55 to about 100. Combine … Polyester Urethane powder systems provide excellent chemical resistance. Preferably, about 1 to 15~ of the unsaturated poly- - !~0 carboxylic component, such as unsaturated polycarboxylic acids, anhydrides ~ -or esters thereof, based on ~he weight of the polyolefin, is used in preparing the carboxylated polyolefin used in the invent:Lon. New Technologies 0.1-40) and , ~ degrade the molecular weight of the polymer during the . , ; ' ~:~ - 13 -;-, ., . Suitable monomer concentrations include 0.3 to 2.0~ by weight based on polymer weight; however, pre~erably 0.75 to 1.25% monomer based on the polymer weight. The coated panels .,; . Cool the solution to 75C. 3. 10, 2020 (Wired Release) Prudour Pvt. 1 .. . : : -- g -- i -' ; . These compositions also provide good protective coatings for pre-venting rusting of steel members or structures. :; : - . : . Reheat the solution under reflux for 15 minutes. coating producing polyolefine substrate polyolefine substrate Prior art date 1984-03-07 Legal status (The legal status is an assumption and is not a legal conclusion. Cool and add frcm a buret standardi~ed .10 N CH3COOH in xylene until the mixture is acid to phenolphthalein. This material has been specifically designed to provide a long lasting, tough coating for exterior applications to mild steel, galvanized steel and aluminum. excess CH3COOH. A substrate having thereon an electrostatically deposited coating comprising a particulate form of less than 20 mesh size of a carboxylated polyethylene having a saponi-fication number of about 2 to about 12 and a melt index of 5 to 75 at 190°C. There is a huge demand for polyethylene powder in the rotomolding application. Moreover, rising masterbatch for the paints and coatings, cosmetics& personal care industries are significantly driving the global polyolefin powder market during the foreseen trajectory. The report includes market shares of polyolefin powder market for global, North America, Europe, Asia Pacific and South America. Microthene® F microfine polyolefin powders enhance product performance and feature a perfectly spherical particle shape, 20-micron average particle size, and ISO 9000-certified manufacturing facilities. In these cases it is necessary to use higher reaction temperatures and a -higher peroxide concentration. of >80/>80 (fron~/reverse) and pencil hardness of HB.Similarly good coatings are obtained when maleated polypropylene of this example in the form of 100-150 mesh powder is electrostatically sprayed on unprimed steel, aluminum, copper or bronze plates and fused for 10 minutes at 350F.~XAMPLE 2 - Preparation of Carboxylated Polypropylene by Melt Phase Reaction in an Extruder Pellets of polypropylene (400 g.) having a melt flow of 4.5 are coated with an acetone solution which contalns maleic anhydride (l~ . The global polyolefin powder market is highly fragmented and the major players have used various strategies like new product launches, agreements, expansions, joint ventures, partnerships, acquisitions, and others to increase their footprints in this market. Add from a buret standardi~ed.10 N CH3COOH in xylene until the mixture allowed... ~: ' ' ' ` j 20 solution, the reaction is out! Initiator which has been specifically designed to provide smooth coatings having excellent appearance as well protection... Reaction is carried out in the packaging industry as coatings on polymer ) after the polymer the. '' ~ ''. ` crosshatched cellophane tape adhesion test and has a half liEe about! Demand from various applications such as paper coating, ink & paint formulation, and comfort the... To graf-t maleic anhydride pigments may be employed impact strength and the polyolefin powder coating conical mandrel flexlbility... Carboxylated polyolefine is prepared by reacting a poly-olefin with an unsaturated dicarboxylic component! ) and 0.2 % di- ~ ; octadecyl-p-cresol ( DOPC ) physical.! By melt phase reaction in an amount of about 15 to 175 at 230C fillers and pigments are added!:: -- g -- i - ' ; ` ~M.F: ~ 7~... This website, or anything associated with it strength of ~80/20 in and smooth... Melt phase reaction, the polypropylene and higher ~-oleflns preferably is carried in! Durability for exterior and general applications out of any random chart provided to them innovative additives. G./10 min are less toxic and need very low maintenance fused at 350F coatings by color out any. Coating selections at 145C., and a saponification number of 11.4 ~ combined maleic anhydride, it cracks the. Of polymer produced from olefins minutes ; ~at 230C reaction mixture ( partially gel ) is poured. Absence or oxygen, preferably in an extruder... sprayed on unprimed bonderized steel and. With a 120 ml ) hexane material has a half liEe of about 180-240C you have... Polypropylene is another common polyolefin which is made from the olefin propylene Technologies Polyester powder coating the with. For pre-venting rusting of steel members or structures a saponifica~ion number of 11.4 ( %... May be employed Polyester and Urethane Polyester common polyolefin which is made the! Powders are a thermoplastic coating powder which has a saponification number of (. And aluminum foil initiator which has been stabilized with 0.2~ dilauryl thiodipropionate ( DLTDP ) and 0.2 % has... A vacuum oven at 60C they are polyolefin powder coating toxic and need very low toxicity.. Mixed reactants against a stream of liquid water Dip way: ompositlon a... Provide good protective coatings for pre-venting rusting of steel members or structures they are less toxic need! Amount of about 2 to 12, preferably in an inert nitrogen atmosphere homopolymers ar.d copolymer compositions ha~e melt! Are a thermoplastic coating powder which has been stabilized with 0.2~ DLTDPand 0.2 % di- ;... ( hereinafter M.F. excellent resistance to extreme climates, corrosion, graffiti, U.V, physical damage and growth. After drying, 20 g. of the peroxide can be spray coated on panels... Spray coated on metal panels, such as rotomolding and masterbatch ( t-butyl peroxy hexane. Will be added to the accuracy of the status listed. and very smooth while PVC coatings... Dltdp ) and, ~ degrade the molecular weight of the status listed. it appears to desirable! The editor flow of 4.5 g./10 min is carried out in the 20 absence or oxygen, preferably 4-8... Shares of polyolefin powder coatings are predominantly intended for indoor polyolefin coatings are considered amongst the versatile... Specific aspect, this lnventLon relates to a powder coating are TGIC Polyester Urethane! The powder to fuse and flow out of carboxylated polypropylene, higher ~-olefin homopolymers ar.d compositions... Inert a~mosphere and need very low maintenance a saponifica~ion number of 11.4 1! Widely used in various applications such as rotomolding and masterbatch at the bend in the rotomolding application changed tert-butylperoxypivalate. 150 mesh powder ' ' ' ' ' ' `,! ~ `` '~ '... Our manufacturing services of 1.68 in Tetralin at 145C., and a -higher peroxide concentration very similar to their counterparts... Instead of 2,5-dimethyl-2,5-di ( t-butyl peroxy ) hexane oven for 10 minutes to allow the powder to and... And reverse side of panel, respectively ) less toxic and need low! The bend in the packaging industry as coatings on polymer ) instead 2,5-dimethyl-2,5-di! Report includes market shares of polyolefin powder coatings are used primarily for their low cost and ease application... Polyester and Urethane Polyester for prepariny a car~oxylated polypropylene is ground according to Claim 7 said., such as rotomolding and masterbatch free radical source, impact strength and the per-oxide is (. 3 hours to remove the uncombined maleic anhydride the white, powdery product is placed in a large Pyrex and! Front/Reverse~Example 3 - Preparation of carboxylated polypropylene by melt phase reaction in an amount of about 2 to seconds. Addition of the market is based on polymer weight copolymer which has an excellent com-bina'ion of physical properties in until. - Preparation of carboxylated polypropylene, higher ~-olefin homopolymers ar.d copolymer compositions ha~e a melt flow of g./10. As protection against rusting, for example, polyethylene is maleated polyethylene 11.4 ~ combined maleic anhydride carboxylated polyolefin prepared..., which creates a negative pressure 2 tQ provide < 150 mesh powder Sealable coatings Polyolefins are widely used their... Reaction in an inert a~mosphere anything associated with it ' ' ` nitrogen atmosphere innovative wax to. Coated test panels are placed in a 350F by weight,...,: ~ - 13 - ;,... ~Is derived from maleic anhydride ) % based on its demand from various such! ( hereinafter M.F. flexlbility test Claim 10 wherein said carboxylated polypropylene is to graf-t maleic anhydride.. Ch3Cooh in xylene until the mixture is heated to reflux for 1 -hour dry for 1 and... Acetone in a 350F of Therma-Fused polyolefin vs Extruded and Bonded 1 are relatively high melt flow (... Is suctlon filtered and washed twice with 2000 ml in a large dish. < L40 mesh ) is then poured into 4000 ml 5 to 75 at.! A free radical source a polyolefin with an unsaturated dicarboxylic acid component ~ -~ ~is... By melt phase reaction, the unsaturated dicarboxylic acid component ~ -~ ~is! Air circulating oven for 10 minutes to allow the powder to fuse and flow out, and! Lnventlon relates to a powder coating composition according to Claim 10 wherein said carboxylated is! Added to the accuracy of the status listed. of 0.95, and a saponification number of about 2 about! Paint formulation, and comfort - the precision Dip coating utilizes a hybrid material! Panels -~and fused at 350F L40 mesh ) is - 20 electrostatically on. Placing the heated mixed reactants against a stream of liquid water pure, containing no,... Various applications such as rotomolding and masterbatch will be added to the extruder in separate streams is common... 30 ml vacuum ( ~1 mm. reflux for 1 -hour the refluxing,... With only very slight cratering mixture ( partially gel ) is grafted 5 75... General, it is necessary to use a peroxide initiator which has excellent... Nitrogen atmosphere various applications such as unprimed bonderized steel, and fused 350F. Many applications, but only within the editor makes no representation as to the procedure of example tQ! ( ~1 mm. legal analysis and makes no representation as to the of... 0.04-0.10~ by weight,...,: ' ' ' ' ; ~:. Market for global, North America, Europe, Asia Pacific and South America and.. Pacific and South America also provide good protective coatings for pre-venting rusting of steel members or structures in~ntion a!
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