CN104403434A - Coating composition - Google Patents
Coating composition Download PDFInfo
- Publication number
- CN104403434A CN104403434A CN201410723357.2A CN201410723357A CN104403434A CN 104403434 A CN104403434 A CN 104403434A CN 201410723357 A CN201410723357 A CN 201410723357A CN 104403434 A CN104403434 A CN 104403434A
- Authority
- CN
- China
- Prior art keywords
- coating composition
- coating
- weight
- packaging
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/04—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C09D127/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a coating composition for packaging, particularly to a coating composition for food and beverage packaging. The coating composition comprises polyester resin, polyvinyl chloride resin and epoxy resin. Furthermore, a base material can be coated with the coating composition by one step to form a firm coating layer. The coating composition is excellent in acid resistance, sterilization performance and sulfur tolerance and can meet the feather membrane standard in the industry, so that the production efficiency of a coating factory is greatly improved, and the production cost is greatly reduced.
Description
Technical field
The present invention relates to packaging coating composition, especially food-drink packaging coating composition, it comprises vibrin, polyvinyl chloride (PVC) RESINS and epoxy resin.
Background technology
In the modern life, various coating be used for coating food and beverage container surface thus formed protective coating.Such as, coiled material coating or sheet material coating is usually adopted to apply metal tin.Coiled material coating or sheet coating refer to and the coiled material of the such as suitable base materials such as stainless steel or aluminium or sheet material to be applied with suitable composition and to solidify.Then, coated base material is made at the bottom of tank body or tank.In addition, coating composition also can be coated on shaping tank body by spraying and dip coating manner, then solidifies.Coating for food and drink container can be coated to base material at a high speed usually, and provides the performance of necessity to meet the demand of final user simultaneously.Such as, the coating that described coating is formed should be safe for Food Contact, and can have excellent substrate adhesion energy.
Draw ring shape easy-open lid as a kind of convenient container cover form of opening commercially, especially Chinese market has a wide range of applications, for drink packs such as such as soda pop, sports beverages, nourishing drinks; Be beneficial to long-term tinned pre-, seasonings etc. packaging of preserving.In the process for making of draw ring shape easy-open lid, plumage film is one of most important performance index, after plumage film refers to that draw ring pulls open, at the film of easy-open lid opening part along margin residual.In industry, the general control standard of plumage film is less than 1mm, then thinks exceed standard when plumage film is greater than 1mm.In order to solve plumage film excessive problem, if present application factory owner passes through to adopt epoxy-phenol resin paint bottoming and organosol paint to be coated with as face solve this problem, but there is production cost rising, the problems such as coating efficiency decline and fraction defective height.Therefore need a kind of novel coating composition, its be once coated with can on easy-open lid the coating of forming property excellence, solve the problem that plumage film exceeds standard, greatly will improve the production efficiency of application factory and reduce production cost.
Summary of the invention
The invention provides a kind of coating composition, it comprises vibrin, polyvinyl chloride (PVC) RESINS and epoxy resin.
Present invention also offers the method for packing with coating composition, and provide the packaging being coated with coating composition of the present invention.
Embodiment
The invention provides a kind of coating composition, it comprises vibrin, polyvinyl chloride (PVC) RESINS and epoxy resin.In some embodiments, coating composition of the present invention also comprises linking agent.
Term used herein " vibrin " refers to the general name by the macromolecular compound of dibasic alcohol or polyvalent alcohol and diprotic acid or polyprotonic acid polycondensation.Vibrin is divided into saturated polyester resin and unsaturated polyester resin.Little, easy wetting, the good manufacturability of the usual viscosity of coating containing vibrin, the glue-line hardness after solidification is large, the transparency is good, luminance brightness is high, room temperature can pressurize fast setting, thermotolerance better, and electrical property is excellent.
Raw material mainly dibasic alcohol, trivalent alcohol and the diprotic acid of synthesizing polyester resin.The most frequently used alcohol is neopentyl glycol, and the water tolerance of its carboxylate is better than ethylene glycol and propylene glycol greatly.Trivalent alcohol is TriMethylolPropane(TMP), trihydroxyethyl ethane mainly.The most frequently used aromatic acid is m-phthalic acid, because near the salt fog resistance of m-phthalic acid, chemical resistant properties and water tolerance, phthalic acid is more superior, so the application of m-phthalic acid in vibrin is more general.Also aliphatic dibasic acid is used in synthesizing polyester resin, as hexanodioic acid, nonane diacid and sebacic acid, more general with hexanodioic acid application.Most of resin all contains aromatic acid and aliphatic dibasic acid, and the mol ratio of aromatic acid and aliphatic dibasic acid is the principal element controlling resin Tg.During synthesizing polyester resin, if introduce some other structures by chemical modification, vibrin can be made to have the performance originally do not possessed, reach and improve and certain performance object outstanding, reach special application performance requirement, using more is epoxy, vinylformic acid, silicone modified polyester resin.
Vibrin used in coating be generally low-molecular-weight, amorphous, containing side chain, the polymkeric substance that can be cross-linked.It is generally formed by polyvalent alcohol and polyprotonic acid esterification, has pure line style and branching type two kinds of structures, and the standby paint film of pure linear structure resin-made has good snappiness and processing characteristics; The hardness of paint film prepared by branching type structural resin and weathering resistance more outstanding.By the adjustment to polyester formulation, as polyvalent alcohol is excessive, the polyester that hydroxyl stops can be obtained.If excessive acid, then what obtain is the polyester stopped with carboxyl.
Use saturated polyester resin in the present invention, saturated polyester resin has the acid number of 2-10mgKOH/g usually, such as 3-9mg KOH/g, or 4-8mg KOH/g; There is the hydroxyl value of 70-150mg KOH/g, such as 80-140mg KOH/g, 90-130mg KOH/g, or 100-120mg KOH/g; And there is the flash-point of 20-30 DEG C.
The milligram number of the potassium hydroxide needed for free acid during term used herein " acid number " refers to and in 1 gram of sample, represents with mgKOH/g.Term used herein " hydroxyl value " refers to the milligram number of the potassium hydroxide (KOH) that the hydroxyl in 1 gram of sample is suitable, represents with mgKOH/g.The acid number of the resin used in the present invention and the measuring method of hydroxyl value are described in detail in embodiment part.
In some embodiments, the vibrin that the present invention uses comprises the multiple vibrin that Duo Jia manufacturer in the market provides sale, Dynapol L952, L1052 of such as being provided by Evonik Company; Uralac SN802, SN805 etc. of thering is provided are provided by DSM N. V., and market can be purchased other similar vibrin available.One or more vibrin can be used in coating composition of the present invention.
In some embodiments, with the total weight of coating composition of the present invention, described vibrin exists with the amount of 15-35 % by weight, is preferably 17-33 % by weight, is more preferably 19-31 % by weight, most preferably is 21-29 % by weight.
Term used herein " polyvinyl chloride (PVC) RESINS " refers to by the macromolecular compound of polymerization of vinyl choride monomer, have that snappiness is good, advantage that easy-formation, not easily crisp, nontoxic pollution-free, shelf time are long, all conglomeraties such as building materials, packaging, medicine can be widely used in.
The polyvinyl chloride (PVC) RESINS used in the present invention has the K value of 72-90 usually, such as 76-88 or 80-84.Term used herein " K value " is the index representing polyvinyl chloride polymerization degree.The defining method of K value used herein first records I.V. (inherent viscosity according to ASTM D1243, limiting viscosity), and by reference table as known in the art, such as, by Mexichem Specialty Resins, form that Inc. provides (can be by
www.mexichem.us/chloro-vinyldownload obtain) inquiry obtain K value.
In some embodiments, the polyvinyl chloride (PVC) RESINS that the present invention uses comprises the multiple polyvinyl chloride (PVC) RESINS that Duo Jia manufacturer in the market provides sale, Geon 171,174 such as provided by Polyone Company and Geon 178 etc., and market can be purchased other polyvinyl chloride (PVC) RESINS available.
In some embodiments, with the total weight of coating composition of the present invention, described polyvinyl chloride exists with the amount of 20-40 % by weight, is preferably 23-37 % by weight, is more preferably 26-34 % by weight, most preferably is 28-32 % by weight.
Term used herein " epoxy resin " refers to the organic high molecular compound containing two or more epoxide groups in molecule, and except indivedual, their relative molecular mass is not high.The molecular structure of epoxy resin be with in molecular chain containing active epoxide group for its feature, epoxide group can be positioned at the end of molecular chain, centre or structure circlewise.Due in molecular structure containing active epoxide group, make they can with polytype solidifying agent generation crosslinking reaction and formed and insoluble, not molten there is the cancellated superpolymer of three-dimensional.Epoxy resin after solidification has good physics, chemical property, it has excellent bonding strength to the surface of metal and non-metallic material, dielectric properties are good, set shrinking percentage is little, product size good stability, and hardness is high, snappiness is better, to alkali and most of solvent-stable, be thus widely used in national defence, each department of national economy, pour into a mould, flood, the purposes such as lamination material, caking agent, coating.
Epoxy resin is of a great variety, common such as bisphenol A-type, bisphenol-f type, bmminated bisphenol-A type and phenol aldehyde type etc.In some embodiments, the epoxy resin that the present invention uses is preferably bisphenol A type epoxy resin.The epoxy resin that the present invention uses comprises the multiple epoxy resin that Duo Jia manufacturer in the market provides sale, the EPON RESIN 1001-X-75 such as provided by MOMENTIVE Company, epoxy resin 601-75 provided by NPSN-301X75 and the three wooden companies of South Asia Company etc., and market can be purchased other similar epoxy resin available.
The epoxy resin used in the present invention has the epoxy equivalent (weight) value of 350-600g/eq usually, such as 400-550g/eq or 450-500g/eq.Term used herein " epoxy equivalent (weight) value " refers to the epoxy resin grams containing 1 equivalent epoxy group(ing), represents with g/eq.
In some embodiments, with the total weight of coating composition of the present invention, described epoxy resin exists with the amount of 1-6 % by weight, is preferably 2-5 % by weight, is more preferably 3-4 % by weight.
In some embodiments, coating composition of the present invention also comprises resol.Be suitable for resol of the present invention can commercially availablely buy, CytecPR401 and Cytec PR285 such as provided by Cytec Company etc., and market can be purchased other similar resol available.One or more resol can be used in coating composition of the present invention.
In some embodiments, with the total weight of coating composition of the present invention, described linking agent exists with the amount of 3-15 % by weight, is preferably 5-13 % by weight, is more preferably 7-11 % by weight.
In some embodiments, coating composition of the present invention also comprises linking agent.The linking agent being suitable for the aqueous priming paint of vanish system of the present invention comprises amino resin crosslinking agent.These linking agents can commercially availablely be buied, CYMEL 659, CYMEL1123 of such as being provided by Cytec Company etc., and market can be purchased other similar amino resin crosslinking agents available.One or more linking agents can be used in coating composition of the present invention.
In some embodiments, with the total weight of coating composition of the present invention, described linking agent exists with the amount of 0.1-3 % by weight, is preferably 0.3-2.7 % by weight, is more preferably 0.5-2.4 % by weight, most preferably is 0.7-2.1 % by weight.
In some embodiments, the solidification storing temperature of coating composition of the present invention is 200-210 DEG C, is preferably 203-207 DEG C; Baking time is 8-12 minute, is preferably 10 minutes.The build obtained after solidification is 8-12 micron, is preferably 9-11.5 micron, is more preferably 9.5-11.0 micron.
In some embodiments, coating composition of the present invention also comprises optional composition.Under normal circumstances, coating composition of the present invention comprises thinner, such as the mixture of water, organic solvent or water and organic solvent, thus dissolves or dispersion resin composition.Thinner can be reactive, non-reacted or the mixture of the two.In some embodiments, described organic solvent through selecting to have enough volatility, thus can vapor away completely in the curing process substantially from coating composition.The example of suitable organic solvent comprises aliphatic hydrocarbon, such as solvent oil and high flash point VM & P petroleum naphtha; Aromatic hydrocarbons, such as benzene,toluene,xylene and solvent naphtha 100,150,200 etc.; Alcohols, such as ethanol, n-propyl alcohol, Virahol, propyl carbinol etc.; Ketone, such as acetone, pimelinketone, methyl iso-butyl ketone (MIBK) etc.; Ester class, such as ethyl acetate, butylacetate, 1-Methoxy-2-propyl acetate etc.; Glycols, such as ethylene glycol; Glycol ethers, such as methoxypropanol and ethylene glycol monomethyl ether, ethylene glycol monobutyl ether etc.Also the mixture of various organic solvent can be used.When it is present, based on the gross weight of coating composition of the present invention, thinner exists with the amount of 15-40 % by weight, is preferably 20-35 % by weight, is more preferably 25-30 % by weight.
The optional composition of another kind in coating composition used in the present invention is catalyzer, to improve solidification or the rate of crosslinking of coating composition.Generally can use acid catalyst, the gross weight of coating based composition, the usual of described catalyzer exists with the amount of 0.05-5% weight, is preferably 0.1-1 % by weight.The example of suitable catalyzer comprises Witco 1298 Soft Acid, methylsulfonic acid, tosic acid, dinonylnaphthalene disulfonic acid and phenyl-phosphonic acid.
Another kind of useful optional member is lubricant, such as wax.Wax can have oilness by making the metal base sheet material through coating thus contribute to manufacturing metal end-blocking.One or more lubricants can be used simultaneously.Proper lubrication agent comprises such as, carnauba wax, FLUOROSLIPFS731MG wax, SST-3H wax, Carnauba wax T-1, Microcrystalline Wax S.P.96, LUBRIZOL1780EF, LUBRIZOL 1775, LUBRIZOL 1725 and polyethylene lubricant etc.If you are using, the gross weight of coating based composition, lubricant exists with the amount of at least 0.01-0.2 % by weight.
Another kind of useful optional member is softening agent.Softening agent can contribute to the matrix resin composition disperseed in coating composition of the present invention.One or more softening agent can be used simultaneously.Suitable softening agent comprises the epoxy castor oil, epoxy soybean oil etc. of such as commercially available acquisition.If you are using, the gross weight of coating based composition, softening agent exists with the amount of at least 0.1-5 % by weight.
Coating composition of the present invention can also be included in standard additive common in coating manufacture field, such as strengthen particle, flow control agent, thixotropic agent, rheology modifier, catalyzer, antioxidant, biocides, defoamer, tensio-active agent, wetting agent, dispersion agent, adhesion promotor, clay, hindered amine as light stabilizer, UV photoabsorption stablizer, stablizer, filler, grinding supporting agent and other common auxiliary agents comprising toner, abrasion resistant particles, film, or the combination of above-mentioned additive.
In some embodiments, coating composition of the present invention and/or its coating formed can be haply not containing, be substantially devoid of and/or completely not containing dihydroxyphenyl propane and/or its derivative, resistates, comprise dihydroxyphenyl propane (" BPA ") and bisphenol A diglycidyl ether (" BADGE ").In such coating composition and/or its coating formed, due to impurity or inevitably environmental pollution, although also unintentionally add dihydroxyphenyl propane and/or derivative, residue, but still dihydroxyphenyl propane and/or derivative may be there is with trace.Coating composition of the present invention and/or its coating formed can be haply not containing, be substantially devoid of and/or completely not containing Bisphenol F and/or its derivative, resistates, comprise Bisphenol F (" BPF ") and Bisphenol F diglycidylether (" BFDGE ").The term used in this article " does not contain haply " and refers to that coating composition of the present invention and/or its coating formed comprise any above-claimed cpd, derivative or the residue that are less than 1000 parts of every 1,000,000 (ppm); Term " is substantially devoid of " any above-claimed cpd, derivative or the residue that refer to and be less than 100ppm; And term " completely not containing " refers to lower than any above-claimed cpd of 20 parts of every 1,000,000,000 (ppb), derivative or residue.
Coating composition of the present invention can be coated on any base material as known in the art, such as, automotive substrates, industrial base material, packaging base material, construction substrate, timber floor and furniture, clothes, electronic product such as electronic product casing and circuit card, glass and transparent substrate, sporting equipment such as golf ball, etc.These base materials can be metals or nonmetallic.Metal base comprises such as tin, steel, zinc-plated steel, Wuxi steel, tinplate sheet material, chromium passivating steel, galvanized steel, aluminium, aluminium foil.Non-metallic substrate comprises polymkeric substance, plastics, polyester, polyolefine, polymeric amide, Mierocrystalline cellulose, polystyrene, polyacrylic acid, poly-((ethylene naphthalate)), polypropylene, polyethylene, nylon, EVOH, poly(lactic acid), other " green " polymeric substrates, poly-(ethylene glycol terephthalate) (PET), polycarbonate, the fine butadiene styrene of polycarbonate acrylonitrile (PC/ABS "), polymeric amide, timber, glued board, solid wood composite board, shaving board, medium density fibre board (MDF), cement, stone material, glass, paper, cardboard, textiles, leather comprises synthetic leather and natural leather, and other non-metal base plates.Above-mentioned base material can be processed by certain mode, such as, through processing to obtain vision and/or color effect.
Coating composition of the present invention applies by standard art procedures any in this area, the methods such as such as electropaining, spraying, electrostatic spraying, dip-coating, roller coat, brushing, is preferably roller coat.
Coating composition of the present invention can be used alone, or uses together with one or more other coating compositions.Such as, coating composition of the present invention containing tinting material or not containing tinting material, can be used as priming paint, undercoat and/or finish paint.
Coating composition of the present invention is suitable for being used as package coating.In this area, the application of various pre-treatment and coating is already perfect.Such as, these process and/or coating can be used for metal tin to delay or to stop burn into provide decorative coating, make to be convenient in manufacturing processed to process etc.It is inner to prevent container contents from contacting with metallographic phase that coating can be coated to tank.Metal contacts with food or beverage may cause the corrosion of metal vessel, thus contaminated food or beverage.At content, this especially easily occurs as when acidity for this.Coating is coated to the corrosion that metal tin inside also contributes to preventing canister headspace, canister headspace refers to the area of space between Contents Fill line and cover.When foodstuff products salts contg is higher, the corrosion of headspace becomes especially serious problem.Coating also can be coated to tank outside.Some embodiments of coating composition of the present invention are specially adapted to metal coiled material raw material, such as, for the manufacture of tank body and/or tank end, comprise at the bottom of tank deck, tank or the metal coiled material raw material of cover.Be applicable at the bottom of tank body, tank deck, tank through design or cover metal coiled material raw material coating usually raw material cutting and punching press before apply, therefore it has good snappiness and ductility usually.Such as, usually metal coiled material two sides is all applied, then punching press process is carried out to the metal coiled material through coating.For " easy-to-pull " tank deck, metal etches vestige and the pull-tab manufactured separately is in addition fixed on tank deck.Then tank deck is attached on tank body by edge rolling technology.The manufacturing processed of " easily-opened type " cover is similar, substantially carries out etching making it possible to by draw ring easily pull-up cover it being removed from tank body along the girth of cover.For at the bottom of tank body, tank deck, tank or cover, usually carry out coating by roller coat to coiled material raw material and form coating, then punching press is formed; But, also can at the bottom of tank body, tank deck, tank or cover formed after carry out coating formed coating.By stand relatively strict temperature and/or pressure requirements tank coating should resistance to blast hole, burn into blushing and/or foaming
Therefore, the invention still further relates to it at least partially through the packaging of the coating composition of the invention described above.In some embodiments, packaging is metal tin.Term " metal tin " comprises the metal tin, container etc. of any type holding object.An example of metal tin is food cans; " food cans " then refers to and can hold the food of any type and/or tank, the container of beverage term.Term " food cans " includes " beverages can "." metal tin " specifically comprises food cans, also comprises tank end especially, and tank end is obtained by the punching press of coiled material raw material, uses with food-drink package combination.Term " metal tin " also comprises crown cap etc. especially, such as the lid and earcap etc. of bottle cap, screwing type top cover, any size.Except food, beverage, metal tin can also be used for holding other article, includes but not limited to personal care product, expelling parasite sprays, sprays paint and other any compounds being applicable to be packaged in aerosol canister.Tank comprises " Twopiece Can ", " Three piece Can ", and tension and compression monolithic tank.Monolithic tank is generally used for aerosol product.Packaging according to the present invention's coating can also comprise Plastic Bottle, plastics tubing, veneer sheet and flexible package, such as, be made up of materials such as PE, PP, PET.These packagings can be used for holding such as food, toothpaste, personal care product etc.
The invention still further relates to the method for coating packaging, coating composition of the present invention is coated in packaging.In some embodiments, coating composition of the present invention is coated in a part for packaging.In some embodiments, coating composition of the present invention is coated on all surface of packaging.
In some embodiments, coating composition of the present invention is used alone, therefore before coating coating composition of the present invention, and any coating of uncoated in packaging to be coated; After coating coating composition of the present invention, also no longer apply any coating.
Embodiment
The following provide embodiments of the invention to help understanding the present invention, but can not be understood as scope of the present invention is limited.Unless otherwise, the number mentioned and percentage ratio are all by weight.
The synthesis of embodiment 1 coating composition
Coating composition is prepared according to following formula
1. under agitation mixed with a small amount of 1-Methoxy-2-propyl acetate by Uralac SN805, rotating speed is about 550-600 rev/min;
2. add wax assistant while stirring, and continue stirring 10 minutes;
3., under continuing stirring, add epoxy castor oil;
4., under continuing stirring, add Polyone Geon 171 fast;
5. adjust mixing speed to about 650-680 rev/min, until mixture temperature of charge rises to 65 DEG C, when temperature of charge reaches 35 DEG C, timing enters organic milling the stage, and period is by 1) interpolation dimethylbenzene and 2) adjustment agitator height carrys out control temperature;
6. after end of milling, after keeping 63-65 DEG C to reach 30 minutes, remaining 1-Methoxy-2-propyl acetate and dimethylbenzene are added, and are about 400-450 rev/min of continuation stirring 5 minutes with rotating speed,;
7. continue to add EPON RESIN 1001-X-75, Cytec PR 285 and Cytec659 under stirring;
8. continue to stir at least 20 minutes.
The synthesis of embodiment 2 coating composition
Coating composition is prepared according to following formula
1. under agitation mixed with a small amount of 1-Methoxy-2-propyl acetate by Uralac SN805, rotating speed is about 550-600 rev/min;
2. add wax assistant while stirring, and continue stirring 10 minutes;
3., under continuing stirring, add sulfonic acid catalyst;
4., under continuing stirring, add Polyone Geon 171 fast;
5. adjust mixing speed to about 650-680 rev/min, until mixture temperature of charge rises to 65 DEG C, when temperature of charge reaches 35 DEG C, timing enters organic milling the stage, and period is by 1) interpolation dimethylbenzene and 2) adjustment agitator height carrys out control temperature;
6. after end of milling, after keeping 63-65 DEG C to reach 30 minutes, remaining 1-Methoxy-2-propyl acetate and dimethylbenzene are added, and be about 400-450 rev/min of continuation stirring 5 minutes with rotating speed;
7. continue to add EPON RESIN 1001-X-75, Cytec PR 401, Cytec1123 under stirring;
8. continue to stir at least 20 minutes.
The preparation of embodiment 3 substrate sample to be tested
The coating composition of the present invention embodiment 1 and 2 prepared according to following steps is on aluminium alloy base plate and substrate sample to be tested is prepared in drying:
1. respectively the coating composition of the present invention prepared by embodiment 1 and 2 is stirred;
2. use metal scraper to be coated by described coating composition respectively through pretreated aluminum alloy base material surface, controlling build is 9.0-11.5 micron;
3. the substrate sample after coating is put into baking oven, in 205 DEG C of bakings 10 minutes;
4. take out the substrate sample through baking, to be tested after cooling.
The performance test of embodiment 4 substrate sample
According to testing method described below, performance test is carried out to the substrate sample being coated with the coating composition of embodiment 1 and 2 prepared in embodiment 3.
I. surperficial levelling
Range estimation: be positioned at the moment by coated substrate sample in face of light, observe its surface appearance, coating surface should be smooth, homogeneous, has good gloss, bubble-free, without undesirable conditions such as particles.
II. sticking power test
Instrument
Chi, cutter and 3M adhesive tape.
Step
(1) on coating iron, intersection marks the cut 11 being spaced apart 1mm, forms 100 lattice, and line should to penetrate film for degree;
(2) film crossed out is brushed away with hairbrush;
(3) by width be 3M 610 applying adhesive tape of 25.4mm on cut, with the translation of forefinger abdomen compress, and reserve 15mm-20mm adhesive tape so that grip;
(4) push down one end of print on the table with finger, adhesive tape is torn from film fast with oblique direction;
(5) degree that in stroke lattice, film is torn is observed.
Judging criterion
Film is not torn, and result is designated as 100%, and be torn lattice and be then designated as 99%, the rest may be inferred.
III. antiacid test
Instrument
The antiacid tank of analytical balance, cannery retort, sulfur resistive, can sealing machine and plate shearing machine.
Testing liquid
(A) acetum (3%)
Measure Glacial acetic acid 30ml, be diluted with water to 1000ml;
(B) acetum (5%)
Measure Glacial acetic acid 50ml, be diluted with water to 1000ml;
(C) citric acid solution (20g/L)
Take citric acid 20g, be diluted to 1000ml by water dissolution.
Step
(1) painting flitch is cut into the rectangular of 25mm, then is the square of 3mm by folding for print one-tenth spacing, be immersed in the antiacid tank of the sulfur resistive filling testing liquid A and seal.Testing liquid should at 5-7mm apart from cover inner face.
(2) painting flitch is cut into the rectangular of 25mm, then is the square of 3mm by folding for print one-tenth spacing, be immersed in the antiacid tank of the sulfur resistive filling testing liquid B and seal.Testing liquid should at 5-7mm apart from cover inner face.
(3) painting flitch is cut into the rectangular of 25mm, then is the square of 3mm by folding for print one-tenth spacing, be immersed in the antiacid tank of the sulfur resistive filling testing liquid C and seal.Testing liquid should at 5-7mm apart from cover inner face.
(4) antiacid for sulfur resistive tank is positioned in cannery retort, is heated to 121 DEG C and is incubated 30 minutes, after natural step-down cooling, take out print, clean, dry.Observe film situation.
Judging criterion
After test, film bubble-free, nothing come off, without variable color, without whiting.
IV. High Temperature Sterilization
Instrument
Cannery retort.
Step
(1) take out disinfection tank, rinsed well with tap water, in disinfection tank, put into the water about exceeding half;
(2) painting flitch is put into disinfection tank, disinfection tank is put into cannery retort, shut pot cover, screw pot cover clockwise;
(3) cannery retort is adjusted to the condition (keeping 30 minutes in 121 DEG C) needed for test, turns on the power switch, cannery retort automatic heating, insulation, cooling;
(4), after end to be sterilized, take out and be coated with flitch, with coil paper by coating plate wiped clean, observe its surface disinfection situation, and note down.
Judging criterion
After test, film is without variable color, without whiting.
V. sulfur resistive test
Instrument
The antiacid tank of analytical balance, cannery retort, sulfur resistive, can sealing machine and plate shearing machine.
Testing liquid
(A) sodium sulfide solution (1%)
Take sodium sulphite 10g, be diluted to 1000ml by water dissolution.Regulate between pH value to 5.5-6.0 with lactic acid again.This solution should use in 4h after preparation.
(B) mixing solutions of L-type cysteine hydrochloride (0.5g/L), potassium primary phosphate (3.6g/L), Sodium phosphate dibasic (7.2g/L).
Step
(1) painting flitch is cut into the rectangular of 25mm, then is the square of 3mm by folding for print one-tenth spacing, be immersed in the antiacid tank of the sulfur resistive filling testing liquid A and seal.Testing liquid should at 5-7mm apart from cover inner face.
(2) painting flitch is cut into the rectangular of 25mm, be the square of 3mm by folding for print one-tenth spacing again, be immersed in the antiacid tank of the sulfur resistive filling testing liquid B and seal.Testing liquid should at 5-7mm apart from cover inner face.
(3) painting flitch is cut into the rectangular of 25mm, then is the square of 3mm by folding for print one-tenth spacing, be immersed in the antiacid tank of the sulfur resistive filling testing liquid C and seal.Testing liquid should at 5-7mm apart from cover inner face.
(4) by antiacid for sulfur resistive tank as in cannery retort, be heated to 121 degree and be incubated 30 minutes, after natural step-down cooling, taking out print, clean, dry.Observe film situation, and keep a record.
Judging criterion
After test, film is without obvious sulphur spot, without coming off.
VI. plumage film test
Instrument
Feather template, cutter, cannery retort, pliers and iron plate scissors.
Step
(1) shine feather mould at the back side being coated with flitch, with cutter line, seen line vestige with front but do not scratched film as well.
(2) cut off 5mm with clipper along line, by this plate in 127 DEG C of sterilizations 30 minutes, water needs submergence to rule.
Etc. (3) after sterilization, temperature drops to 90 DEG C of taking-up planks, takes advantage of heat pliers to vise the place of cutting off and slowly to leave behind to the back side of film line middle portion, finally looks at the width that line place leaves film and bears, and according to standard recording result.
Judging criterion
Feather length 0mm is 10 grades;
Feather length 0-0.4mm is 8 grades;
Feather length 0.4-0.8mm is 6 grades;
Feather length 0.8-1.2mm is 4 grades;
Feather length 1.2-1.6mm is 2 grades;
Feather length > 1.6mm is 0 grade.
VII.206Shell specific conductivity is tested
Instrument
Plate shearing machine, metal exposed tester and EOE mould punch press.
Step
(1) being coated with the aluminium sheet of coating composition of embodiment 1 and 2 to sanction;
(2) with the lathe punching lid with EOE particular manufacturing craft, lathe punching press condition is set, should be 110,90 and 80 in order;
(3) power switch is threaded to ON by OFF, red button is screwed out, presses the green button START; on protective guard bullet, painting lamina membranacea film is placed on inside mould down, covers circular die with plank and be as the criterion; press protective guard gently, allow its punching press voluntarily, voluntarily on bullet.Take off made lid, be placed on, by that analogy, obtain multiple EOE lid;
(4) NaCl solution of 1% is prepared;
(5) NaCl solution prepared is poured in transparent vessel, does not exceed blast main interface, be plugged vacuum pump air pipe interface, plug in, button is threaded to ON by OFF, arranges 6.3 volts of voltages;
(6) lid is upside down on transparent vessel, wherein can vacuumize makes lid hold, container conversely, live lid edge with electric wire one head-clamp sub-folder, under upper right hand metal bar is inserted, excellent limit pilot lamp is bright, surface SET pilot lamp is also bright, reading has 6.3 to become other numerical value, writes down Zhe Heng fixed number value, is the ERV value of EOE.
Judging criterion
The mean number of numerical value is less than 1, and it is qualified to be.If mean number is greater than 1, be defective.
VIII. wedge shape test
Instrument
Wedge impact instrument
Step
(1) painting flitch is cut into the print of 4*10CM;
(2) curved by print U-shaped, outwardly, length is 10CM to coating;
(3) lift iron hammer to specified altitude, hand steered an iron hammer, be placed on anvil by U-shaped print on the other hand, and one end is near groove;
(4) iron hammer free-falling is made;
(5) print impacted is soaked in copper-bath after 2 minutes and take out, rinse with water and then dry.
Judging criterion
Get the length without continuous corrosion point part with dipstick metering, if 90MM, then result is 90%, and corrosion-free point is 100%.
Test result is as following table
Above result shows, coating composition of the present invention can form firmly coating with primary coating on base material, it has excellent acidproof, sterilization, sulfur resistance, and meets plumage film standard in industry, greatly will improve the production efficiency of application factory and reduce production cost.
The mensuration of embodiment 5 resinous acid value
Instrument
Electronic scales, Erlenmeyer flask, base buret and magnetic stirring apparatus.
Testing liquid
0.1mol/L potassium hydroxide-methyl alcohol standardized solution, 1% phenolphthalein-ethanol indicator, 1% coeruleum bromocresolis-ethanol indicator, 2:1 (v/v) toluene-ethano mix reagent (add phenolphthalein and be titrated to neutrality with 0.1mol/L potassium hydroxide-methanol solution) and acetone.
Step
(1) resin sample taking suitable weight puts into Erlenmeyer flask;
(2) 50ml toluene-ethano mixed solvent is added, stirring and dissolving sample;
(3) 3 indicator solutions are added;
(4) solution changes color is titrated to 0.1mol/L potassium hydroxide-methanol solution, and the required standardized solution volume of record;
(5) utilize following formulae discovery survey the acid number of resin sample:
Wherein: the volume of potassium hydroxide-methyl alcohol standardized solution that V-titration consumes, ml;
The concentration of C-potassium hydroxide-methyl alcohol standardized solution, mol/L;
The weight of m-resin sample, g;
The acid number of A.V.-resin sample, mgKOH/g.
The mensuration of embodiment 6 resin hydroxyl value
Instrument
Electronic scales, volumetric flask, Erlenmeyer flask and transfer pipet.
Testing liquid
(A) 0.5mol/L potassium hydroxide-ethanol standardized solution, tetrahydrofuran (THF), DMAP, 10g/L thymolphthalein-tetrahydrofuran (THF) indicator and 4:1 (v/v) tetrahydrofuran (THF)-aqueous solution.
(B) acetylize liquid: get 500ml tetrahydrofuran (THF) and put into 1000ml volumetric flask, more accurately add 125ml diacetyl oxide, be then diluted to scale with tetrahydrofuran (THF).
(C) catalyzer: take 10g DMAP and be dissolved in 1000ml tetrahydrofuran (THF).
Step
(1) resin sample taking suitable weight puts into Erlenmeyer flask;
(2) 20ml tetrahydrofuran is added;
(3) accurately add 25ml catalyzer and 10ml acetylize liquid with transfer pipet, rock evenly;
(4) add 20ml tetrahydrofuran (THF)-aqueous solution, rock evenly and place 30 minutes;
(5) 50ml tetrahydrofuran (THF), 10 thymolphthalein-tetrahydrofuran (THF) indicator are added again;
(6) be titrated to solution with 0.5mol/L potassium hydroxide-ethanol solution and become blueness from colourless, and the required standardized solution volume of record;
(7) do not add resin sample repetition above-mentioned steps and carry out blank test;
(8) utilize following formulae discovery survey the acid number of resin sample:
Wherein: V
0the volume of-blank potassium hydroxide-ethanol the standardized solution consumed, ml;
The volume of the potassium hydroxide-ethanol standardized solution that V-resin sample consumes, ml;
The concentration of C-potassium hydroxide-ethanol standardized solution, mol/L;
The weight of m-resin sample, g;
The acid number of A.V.-resin sample, mgKOH/g;
The hydroxyl value of H.V.-resin sample, mgKOH/g.
Claims (19)
1. a coating composition, it comprises vibrin, polyvinyl chloride (PVC) RESINS and epoxy resin.
2. coating composition as claimed in claim 1, wherein based on its gross weight, described coating composition comprises the vibrin of 15-35 % by weight.
3. coating composition as claimed in claim 1, wherein said vibrin has the acid number of 2-10mgKOH/g, and the hydroxyl value of 80-140mgKOH/g.
4. coating composition as claimed in claim 1, wherein based on its gross weight, described coating composition comprises the polyvinyl chloride (PVC) RESINS of 20-40 % by weight.
5. coating composition as claimed in claim 1, wherein said polyvinyl chloride (PVC) RESINS has the K value of 72-90.
6. coating composition as claimed in claim 1, wherein based on its gross weight, described coating composition comprises the epoxy resin of 1-6 % by weight.
7. coating composition as claimed in claim 1, wherein said epoxy resin has the epoxy equivalent (weight) value of 350-600g/eq.
8. coating composition as claimed in claim 1, also comprises linking agent.
9. coating composition as claimed in claim 8, wherein said linking agent comprises amino resin crosslinking agent.
10. coating composition as claimed in claim 9, wherein based on its gross weight, described coating composition comprises the amino resin crosslinking agent of 0.1-3 % by weight.
11. coating compositions as claimed in claim 1, it is substantially devoid of dihydroxyphenyl propane.
12. coating compositions as claimed in claim 1, it is not completely containing dihydroxyphenyl propane.
13. 1 kinds of packagings, described packaging be coated with coating composition as claimed in claim 1 at least partially.
14. pack as claimed in claim 13, before coating coating composition as claimed in claim 1, do not apply any coating.
15. pack as claimed in claim 13, after coating coating composition as claimed in claim 1, no longer apply any coating.
16. pack as claimed in claim 13, and wherein said packaging comprises food cans.
17. 1 kinds of methods applying packaging, described method comprises coating composition as claimed in claim 1 in a part for described packaging.
The methods of 18. as claimed in claim 17 coating packagings, wherein by before on coating composition as claimed in claim 1 a to part for described packaging, uncoated any coating in described packaging.
The methods of 19. as claimed in claim 18 coating packagings, wherein by after on coating composition as claimed in claim 1 a to part for described packaging, no longer apply any coating.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723357.2A CN104403434A (en) | 2014-12-02 | 2014-12-02 | Coating composition |
| HK15106519.2A HK1206053A1 (en) | 2014-12-02 | 2015-07-08 | Coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723357.2A CN104403434A (en) | 2014-12-02 | 2014-12-02 | Coating composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104403434A true CN104403434A (en) | 2015-03-11 |
Family
ID=52641108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410723357.2A Pending CN104403434A (en) | 2014-12-02 | 2014-12-02 | Coating composition |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104403434A (en) |
| HK (1) | HK1206053A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107446258A (en) * | 2016-05-30 | 2017-12-08 | 杭州吉华高分子材料股份有限公司 | A kind of peelable resin and preparation method and application |
| CN108997902A (en) * | 2018-09-03 | 2018-12-14 | 王劲 | A kind of resistance to deep-draw high temperature resistant does not adhere to coil coating and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367720A (en) * | 1999-12-21 | 2002-09-04 | 阿尔科公司 | Copolymer primer for aluminum alloy food and beverage containers |
| CN1800283A (en) * | 2005-01-05 | 2006-07-12 | 中国科学院过程工程研究所 | Insulating mold coating and its uses |
-
2014
- 2014-12-02 CN CN201410723357.2A patent/CN104403434A/en active Pending
-
2015
- 2015-07-08 HK HK15106519.2A patent/HK1206053A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367720A (en) * | 1999-12-21 | 2002-09-04 | 阿尔科公司 | Copolymer primer for aluminum alloy food and beverage containers |
| CN1800283A (en) * | 2005-01-05 | 2006-07-12 | 中国科学院过程工程研究所 | Insulating mold coating and its uses |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107446258A (en) * | 2016-05-30 | 2017-12-08 | 杭州吉华高分子材料股份有限公司 | A kind of peelable resin and preparation method and application |
| CN108997902A (en) * | 2018-09-03 | 2018-12-14 | 王劲 | A kind of resistance to deep-draw high temperature resistant does not adhere to coil coating and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1206053A1 (en) | 2015-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100358929C (en) | Coating composition for metal substrates | |
| RU2637023C2 (en) | Coating compositions of containers for food products and beverages | |
| CA2622550C (en) | Coating compositions for containers and methods of coating | |
| EP3263664B1 (en) | Coating compositions for packaging articles and methods of coating | |
| CN103562256A (en) | Coating compositions comprising 2,2'-biphenol | |
| CN103819984A (en) | Packaging coating composition | |
| AU2016200329A1 (en) | Compositions for containers and other articles and methods of using same | |
| CA2879424C (en) | Compositions for containers and other articles and methods of using same | |
| US20070298246A1 (en) | Corrosion-inhibiting coating for metal substrates and corrosion-resistant article | |
| EP2996954B1 (en) | Removable closure and coating system | |
| CN104403434A (en) | Coating composition | |
| CN104169324A (en) | Packaging paint composition | |
| CN107429102A (en) | Container coatings composition | |
| CN108350291A (en) | Flexible container coating composition | |
| JP5468307B2 (en) | Durable ink composition for jet printers | |
| CN110724408A (en) | Universal U-shaped white ink for shrink film and preparation method thereof | |
| CN111727156B (en) | Self-curing coating composition | |
| CN109219641A (en) | The packaging of latex polymer coated with emulsion polymerization | |
| CN107735466A (en) | coating composition for food and beverage packaging | |
| CN112266698A (en) | Transparent coating for high-scratch-resistance tank and preparation method thereof | |
| WO2022246124A1 (en) | Metal packaging liquid or aerosol jet coating compositions, coated substrates, packaging, and methods | |
| EP1161483A1 (en) | Process for producing a plastic web for coating a metal substrate, laminate comprising this plastic web, and product or component produced therewith | |
| WO2021252752A1 (en) | Coating composition for beverage containers | |
| EP4061544A1 (en) | Two-part epoxy compositions for adherent coatings of storage articles | |
| CA3054387A1 (en) | Sealable anti-corrosion coating for packaging film for aggressive products |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1206053 Country of ref document: HK |
|
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150311 |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1206053 Country of ref document: HK |