Abstract: Described herein are tires comprising a rubber composition based on at least an elastomer and a hydrocarbon resin, wherein the hydrocarbon resin is based on a cyclic monomer selected from the group consisting of a distillation cut from a petroleum refinery stream, and/or C4, C5 or C6 cyclic olefins and mixtures thereof, and wherein the hydrocarbon resin has a number average molecular weight (Mn) of between 150 and 800 g/mol, and a content of aromatic protons (H Ar, expressed in mol %), a glass transition temperature (Tg, expressed in ° C.), and a number average molecular weight (Mn, expressed in g/mol) that are represented by (1) H Ar?6 mol %, (2) Tg?95?2.2*(H Ar), (3) Tg?125?(0.08*Mn).

Abstract: A modified liquid diene rubber (A) has a functional group (a) derived from an acid anhydride, and satisfies all the requirements (I) to (III) below: (I) The functional group equivalent weight of the functional groups (a) is in the range of 400 to 3,500 g/eq. (II) The polystyrene-equivalent number average molecular weight (Mn) measured by gel permeation chromatography (GPC) is in the range of 5,000 to 20,000. (III) The melt viscosity at 38° C. is not less than 3 Pa·s and X (K) is not less than 6100 K wherein X is the slope of a linear line passing through two points in a graph in which the two points are values of melt viscosity ? (Pa·s) at 38° C. and 60° C. measured with a Brookfield viscometer which are plotted as Ln[?/(Pa·s)] on ordinate versus 1/T (K?1) on abscissa (with the proviso that T is temperature (K)).

Abstract: This invention relates to a polymeric pipe, and more particularly a polymeric pipe where the pipe comprises a cross-linked polyolefin formed from extruded polyolefin comprising a bismaleimido crosslinker. This invention relates to the manufacturing of plastic pipes and tubing of polyolefinic polymers such as polyethylene, with crosslinking by a bismaleimido crosslinker, to produce crosslinked polyethylene (PEX) pipes and tubing.

Abstract: A rubber composition is based on at least: a diene elastomer; a reinforcing inorganic filler; an agent for coupling the reinforcing inorganic filler with the diene elastomer, said coupling agent being an organofunctional silane comprising at least one oligomer of general formula (I), as described in the claims, bearing at least one blocked mercaptosilane unit and at least one mercaptosilane unit, a hydrocarbon-based resin predominantly composed of monomers chosen from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, and a crosslinking system. A semi-finished article and a tire may comprise at least one such rubber composition.

Abstract: A method and apparatus for applying a viscous fluid onto a surface. An applicator associated with an extension member may be positioned over the surface using a robotic operator. The extension member may be configured to maintain a selected distance between the applicator and a fluid source for the viscous fluid. The viscous fluid may be dispensed from the fluid source to the applicator. The viscous fluid may be applied onto the surface using the applicator.

Abstract: A crosslinked rubber is produced by crosslinking a polymer composition containing 100 parts by weight of a rubber component containing a cyclopentene ring-opening polymer and 20 to 200 parts by weight of carbon black, wherein, when the crosslinked rubber is subjected to an ozone treatment in which the rubber is maintained at 40° C. and an ozone concentration of 50 pphm for 144 hours under a 20% tensile strain, the crosslinked rubber shows a rate of change in tensile strength before and after ozone treatment of within ±70%.

Abstract: A rubber composition is based on at least an elastomer, a reinforcing filler, a crosslinking system and a crumb rubber, in which the crumb exhibits a content of sulfur and a content of accelerator such that their sum is less than or equal to 5 parts by weight per 100 parts by weight of elastomer (phr), the said crumb exhibiting a total sulfur content of less than or equal to 4 parts by weight per 100 parts by weight of elastomer (phr) in the composition of the crumb.

Abstract: A cable including a conductor surrounded by a covering layer, the covering layer formed from a thermoplastic vulcanizate composition which includes a continuous phase and a dispersed phase. The continuous phase is formed of a thermoplastic polyolefin. The dispersed phase is formed of a cross-linked elastomeric polyolefin. The thermoplastic vulcanizate composition passes the Hot Creep Test at 150° C. in accordance with UL 2556 (2013) and has a dielectric loss of 3 or less. Methods of forming cables with coverings are also disclosed.

Abstract: Provided is a rubber composition which contains a diene rubber and a reinforcing filler, and the diene rubber contains a styrene-butadiene copolymer component including at least one type of styrene-butadiene copolymer and satisfying the following requirements: (1) the bonded styrene content is from 5 to 50 wt. %; (2) among components obtained by ozone decomposition, a content of a decomposed component V1 containing one 1,2-bonded butadiene-derived unit out of a total of 100 mol % of decomposed components containing styrene-derived units and/or 1,2-bonded butadiene-derived units is not less than 25 mol %; (3) among components obtained by ozone decomposition, a content of a decomposed component S2V1 containing two styrene-derived units and one 1,2-bonded butadiene-derived unit out of a total of 100 mol % of decomposed components containing styrene-derived units and/or 1,2-bonded butadiene-derived units is less than 5 mol %; and (4) a vinyl content of a butadiene moiety is not less than 50%.

Abstract: Provided is a rubber composition which contains a diene rubber and a reinforcing filler, and the diene rubber contains a styrene-butadiene copolymer component including at least one type of styrene-butadiene copolymer and satisfying: (1) the bonded styrene content is from 5 to 50 wt. %; (2) among components obtained by ozone decomposition, a content of a decomposed component V1 containing one 1,2-bonded butadiene-derived unit out of a total of 100 mol % of decomposed components containing styrene-derived units and/or 1,2-bonded butadiene-derived units is not less than 20 mol %; (3) among components obtained by ozone decomposition, a content of a decomposed component S2V1 containing two styrene-derived units and one 1,2-bonded butadiene-derived unit out of a total of 100 mol % of decomposed components containing styrene-derived units and/or 1,2-bonded butadiene-derived units is less than 4 mol %; and (4) a vinyl content of a butadiene moiety is not less than 20% and less 50%.

Abstract: A rubber composition contains a diene rubber and a reinforcing filler, and the diene rubber contains a styrene-butadiene copolymer component including at least one type of styrene-butadiene copolymer and satisfying the following: (1) the bonded styrene content is from 5 to 50 wt. %; (2) among components obtained by ozone decomposition, the content of a decomposed component V1 containing one 1,2-bonded butadiene-derived unit out of the total of 100 mol % of decomposed components containing styrene-derived units and/or 1,2-bonded butadiene-derived units is less than 20 mol %; (3) among components obtained by ozone decomposition, the content of a decomposed component S2V1 containing two styrene-derived units and one 1,2-bonded butadiene-derived unit out of the total of 100 mol % of decomposed components containing styrene-derived units and/or 1,2-bonded butadiene-derived units is not less than 4 mol %; and (4) the vinyl content of a butadiene moiety is not less than 20% and less than 50%.

Abstract: A rubber composition contains a diene rubber including a styrene-butadiene copolymer component including a styrene-butadiene copolymer and a reinforcing filler. (1) The bonded styrene content is from 5 to 50 wt. %. (2) The total amount of styrene of an ozone decomposed component S1 including one styrene-derived unit and an ozone decomposed component S1V1 including one styrene-derived unit and one 1,2-bonded butadiene-derived unit is less than 80 wt. % of the amount of bonded styrene. The total amount of styrene of the decomposed component S1V1 is not less than 10 wt. % of the amount of bonded styrene. (3) The integrated intensity of an ozone decomposed component S1V2 including one styrene-derived unit and two 1,2-bonded butadiene-derived units is less than 15% of the area intensity of all decomposed components including styrene-derived units. (4) The vinyl content of a butadiene portion is not less than 20% and less than 50%.

Abstract: Provided is a tire comprising a tread composed of a rubber composition, the rubber composition comprising 5 to 100 parts by mass of an aromatic petroleum resin having a weight average molecular weight of 1000 to 5000, based on 100 parts by mass of a rubber component comprising a linear styrene butadiene rubber having a styrene content of 35 to 45% by mass, a vinyl content of 35 to 45% by mass, and a weight average molecular weight of 1,000,000 to 1,400,000.

Abstract: The present disclosure provides a composition comprising or obtained from a reaction mixture comprising a first propylene-based polymer, an olefin block copolymer, and a cure component. The cure component comprises (i) a second propylene/?-olefin copolymer, (ii) a scorch retardant, and (iii) a crosslinking agent.

Abstract: Disclosed are sulfur-crosslinkable rubber mixtures for the base of treads having a cap/base construction of vehicle tires, and a vehicle tire comprising the sulfur-crosslinkable rubber mixtures. The disclosed rubber mixture comprises: at least one diene rubber, 15 to 55 phr of at least one filler, at least one hydrocarbon resin comprising 25% to 100% by weight of aromatic monomers, having a softening point according to ASTM E 28 (ring and ball) of 70° C. to 130° C., and 0 phr of further plasticizers, that is, the sulfur-crosslinkable rubber mixture is free from further plasticizers.

Abstract: There are provided a modified liquid diene rubber that can be used for a curable resin composition and a resin composition containing the modified liquid diene rubber. The curable resin composition containing the modified liquid diene rubber has a much higher curing rate than that in the related art, and the resulting cured product has excellent mechanical properties, transparency, and heat resistance. Produced are a modified liquid diene rubber and a resin composition containing the modified liquid diene rubber. The modified liquid diene rubber includes a modifying group (p) partly containing a (meth)acryloyl group therein and a monomer unit (a1) derived from a conjugated diene compound. A carbon-carbon double bond derived from the conjugated diene compound has a hydrogenation rate of 30 to 95 mol %, and the modifying group (p) has a functional group equivalent weight of 700 to 20,000 g/eq.

Abstract: The present invention is related to a grip composition comprising 5 to 10 wt % of a polymer blend modifier, having a weight average molecular weight of 10,000 to 100,000 g/mole, 65 to 75 wt % of a propylene-based elastomer, having a weight average molecular weight of 100,000 to 300,000 g/mole, and a mineral powder. The polymer blend modifier comprises a first propylene-based polymer and a second propylene-based polymer, where the first and second propylene-based polymers are different and are individually selected from a homopolymer of propylene or a copolymer of propylene and ethylene or a C4 to C10 alpha-olefin. The composition further comprises 5 to 10 wt % of a propylene polymer, which is a homopolymer of propylene or a copolymer of propylene units with from 0.5 to 4 wt % ethylene or C4 to C10 alpha-olefin comonomer derived units.

Abstract: The present invention is related to a propylene-based injection molded composition made from a polymer blend comprising from 45 to 85 wt % of a polymer blend modifier having a weight average molecular weight of 10,000 to 100,000 g/mole and from 15 to 55 wt % of a propylene-based elastomer having a weight average molecular weight of from 100,000 to 300,000 g/mole, where the weight percent of the polymer blend modifier and the propylene-based elastomer are based on the total weight of the polymer blend. The polymer blend modifier comprises a first propylene-based polymer and a second propylene-based polymer, where the first and second propylene-based polymers are different and are individually selected from a homopolymer of propylene or a copolymer of propylene and ethylene or a C4 to C10 alpha-olefin.

Abstract: Modified heterophasic composition to improve the surface appearance of automobil parts.

Abstract: A tire rubber composition that improves dry grip performance to or beyond conventional levels, while retaining grip performance sustainability and wear resistance during high-speed running is provided. A tire rubber composition comprising 40 to 180 parts by weight of carbon black having a nitrogen adsorption specific surface area of 80 to 400 m2/g and 1 to 100 parts by weight of aromatic copolymer blended in 100 parts by weight of diene rubber, the aromatic copolymer being a copolymer of an ?-methylstyrene derivative represented by general formula (I) and indene.

Abstract: Functionalization of polymers, including polyolefins, via decomposition of organic peroxides through the use of solid-state shear pulverization.

Abstract: A method for analyzing fatigue life of an elastomeric component includes a step of conducting a finite element analysis to obtain a base state. A plurality of case vectors are then selected to represent a space of possible loading states that occur within a time-varying load data signal based on measurement of the elastomeric component or on a simulation of multibody dynamics. For at least a portion of the case vectors, a finite element analysis is conducted at a plurality of discrete gridpoints along the case vectors starting at the base state and tracking the case vector. Using an interpolation engine, desired local solution variables for a current state may be interpolated from the finite element analysis at the plurality of discrete gridpoints. A damage calculation may then be calculated based on the desired local solution variables for the current state.

Abstract: The present invention provides a rubber composition comprising, as blended, a rubber component (A), an amino acid derivative (B) and a filler containing an inorganic filler (C), and further containing, as incorporated therein, at least one selected from sulfur and a sulfur compound. The vulcanization rate of the rubber composition is accelerated and the low-heat-generation property thereof is excellent.

Abstract: Brominated organic polymer solutions from a bromination reaction are devolatilized in a devolatilizing extruder. A starting organic polymer is brominated in solution to form a brominated polymer solution. This solution is combined with a second thermoplastic polymer to form a concentrated solution. The solvent and other volatile compounds are removed from the concentrated solution in a devolatilizing extruder to form a devolatilized polymer blend.

Abstract: Functionalization of polymers, including polyolefins, via decomposition of organic peroxides through the use of solid-state shear pulverization.

Abstract: A multi-modal polymer blend for use in an adhesive composition comprising at least two compositionally different propylene-based polymers. The multi-modal polymer blend has a Mw of about 10,000 g/mol to about 150,000 g/mol. When subjected to Temperature Rising Elution Fractionation, the multi-modal polymer blend exhibits a first fraction that is soluble at ?15° C. in a hydrocarbon solvent, such as xylene or ortho-dichlorobenzene, the first fraction having an isotactic (mm) triad tacticity of about 70 mol % to about 90 mol %; and a second fraction that is insoluble or less soluble than the first fraction at ?15° C. in the hydrocarbon solvent, the second fraction having an isotactic (mm) triad tacticity of about 85 mol % to about 98 mol %.

Abstract: Thermoplastic elastomer compositions including at least one elastomeric component and at least one semi-crystalline polymer are provided. In particular, thermoplastic elastomer composition characterized by an SRI less than or equal to 1.6 at 10000 Pa s, and less than 4.5 at 1000 Pa s for compositions with TMA at 1000 ?m greater than 85° C. are provided. Also provided are articles made from the thermoplastic elastomeric compositions.

Abstract: This invention relates to a blocked process for producing polymers of high and low molecular weights utilizing the same polymer separator. The separator is operated in a different mode depending on the molecular weight of the polymer being produced such that the separation system is operated in flash mode for the separation of low molecular weight polymers and operated in lower critical solution temperature (LCST) mode for the separation of high molecular weight polymers.

Abstract: The present invention relates to a thermoplastic elastomer composition which comprises a branched olefin copolymer comprising: a main chain of an ethylene/?-olefin copolymer; and a side chain derived from a crystalline propylene polymer containing a vinyl group at one end, wherein the content of ?-olefin in the main chain is 70 mol % or less, the composition has an elongation at break of 500% or higher, and has an elastic recovery rate of 70% or more when recovering from an extension to 300% elongation, and a process for manufacturing the same.

Abstract: The invention provides a crosslinked composition formed by thermally treating a composition comprising at least the following: A) an ethylene-based polymer that has a density less than, or equal to, 0.910 g/cc; B) an olefin-based polymer that has a melt viscosity less than, or equal to, 20,000 cP, at 350° F.; and C) a crosslinking agent.

Abstract: A nonwoven web is provided. The nonwoven web contains a side-by-side composite fiber having crimps. The composite fiber contains first and second propylene polymers. The nonwoven web contains a bonded portion that contains a bonding pattern containing zigzag unit patterns. The zigzag unit patterns are continuous and substantially parallel with a first direction and are disposed in a second direction at predetermined intervals. A triangle formed by adjacent three contact points of a first diagonal line and a second diagonal line of the unit pattern contains a part of the unit pattern that is adjacent to the triangle in the second direction.

Abstract: Polyolefin block and graft copolymers comprised of two or more semicrystalline polyolefin blocks or grafts and one or more amorphous polyolefin blocks can be blended with a low molecular weight fluid diluent that preferentially locates within and swells the amorphous domains of the block or graft copolymer, while preserving the crystallinity of the semicrystalline block domains. After mechanical or thermomechanical processing, such compositions combine softness with high strength and high recoverable elasticity. Compositions are also disclosed whereby the diluent species is removed from the composition, either before or after the mechanical or thermomechanical processing, in order to create a strong elastic material with an ultra-low entanglement density within the amorphous domains.

Abstract: The present invention provides a rubber composition for tires capable of improving handling stability, fuel economy, wet grip performance, elongation at break, and abrasion resistance together while maintaining the balance between them. The present invention also provides a pneumatic tire including the rubber composition. The present invention relates to a rubber composition for tires containing a diene rubber, silica having a BET specific surface area of 170 to 270 m2/g, sulfur, and a liquid resin having a softening point of ?20 to 45° C., wherein the amount of the liquid resin is 0.5 to 20 parts by mass, and the amount of the silica is 40 to 120 parts by mass, each per 100 parts by mass of the rubber component of the rubber composition.

Abstract: A golf ball comprises a dynamically crosslinked thermoplastic material prepared by a method including: (a) partially crosslinking a rubber composition of a rubber polymer and two free radical initiators at a first crosslinking temperature to form a thermoplastic, partially crosslinked elastomer composition; (b) mixing a thermoplastic polymer composition with the thermoplastic, partially crosslinked rubber composition and heating the mixture to a second crosslinking temperature higher than the first crosslinking temperature and at which the thermoplastic polymer composition is liquid; and (c) continuously mixing the mixture while further crosslinking the rubber composition to form a thermoplastic material having a dispersed phase of crosslinked rubber composition in the thermoplastic polymer composition.

Abstract: Polymeric particles having a size of about 0.1 to about 100 microns comprising at least two different phase separated polymers, at least one pigment, and at least one additive, where the pigment and additive are distributed within the phase separated polymers. Also disclosed are methods for preparing polymeric particles comprising phase separated polymers that comprise additives and pigments, wherein the methods involve molding.

Abstract: Provided are compositions comprising: (a) an ethylene-propylene-diene terpolymer having a Mooney viscosity [ML(1+4) 125° C.] of about 25 to about 300 and an ethylene content of at least about 60 wt % of the ethylene-propylene-diene terpolymer; and (b) a polyolefin elastomer. The presence of the polyolefin elastomer improves rheological properties of the composition to an extent that does not significantly compromise other properties, such as tensile strength at break and compression set.

Abstract: Process for the manufacture of an elastomer composition having a self-sealing property which is based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a blend of at least two solid elastomers, a polybutadiene or butadiene copolymer elastomer, referred to as “elastomer A”, and a natural rubber or synthetic polyisoprene elastomer, referred to as “elastomer B”, the elastomer A:elastomer B ratio by weight being within a range from 10:90 to 90:10; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler, in which, during a first stage or stage (a), a masterbatch comprising at least the elastomers A and B and between 30 and 90 phr of a hydrocarbon resin is prepared by mixing these various components in a mixer at a “hot compounding” temperature or up to a “hot compounding” temperature which is greater than the softening temperature of the hydrocarbon resin.

Abstract: The present disclosure relates to a thermo-reversible and self-healing blend comprising polybutadiene compounded with at least one ring opening agent and at least one ring compound containing at least one hetero-cyclic compound and at least one grafting enabling moiety, wherein the ring opening agent is capable of opening the ring compound to provide at least one open functional group to which the ring opening agent is capable of bonding, and wherein the ring compound is capable of grafting on the backbone of a polymer through the grafting enabling moiety. The present disclosure also relates to a process for preparing a thermo-reversible and self-healing blend and its use in preparing molded articles.

Abstract: Nanolatexes comprising functional monomers and methods for making nanolatexes. Compositions comprising between about 3:97 and 90:10 (w/w) nanolatex particles to conventional latex particles. Because of the particle size differences between the conventional and nanolatexes, the nanolatexes may distribute themselves advantageously amongst the conventional latexes during coalescence, resulting in films having unexpected properties. In particular, when the average particle size of the conventional latex is about six times larger than the average particle size of the nanolatex, a composition comprising a ratio of 1 conventional latex particle for every 25 nanolatex particles results in unexpectedly strong (large Young's modulus) and smooth (high specular gloss) films.

Abstract: A pressure-sensitive hot melt adhesive composition is disclosed that includes at least 10% by weight of a first propylene thermoplastic elastomer, at least 25% by weight of a first tackifying agent exhibiting a softening point of at least 120° C., and at least 25% by weight plasticizer.

Abstract: Disclosed is a resin composition for laser engraving, comprising (Component A) a macromonomer comprising only one radically polymerizable group in the molecule, (Component B) a polyfunctional ethylenically unsaturated compound comprising two or more radically polymerizable groups in the molecule, (Component C) a binder polymer, and (Component D) a radical polymerization initiator.

Abstract: Latex blend formulations that include a high solids cross-linked ethylene propylene diene terpolymer latex with acrylics, polyurethane, epoxy, or alkyd resin usable as a waterproofing material for roofs or usable in paints and adhesives.

Abstract: Thermoplastic elastomer compositions including at least one elastomeric component and at least one semi-crystalline polymer are provided. In particular, thermoplastic elastomer composition characterized by an SRI less than or equal to 1.6 at 10000 Pa s, and less than 4.5 at 1000 Pa s for compositions with TMA at 1000 ?m greater than 85° C. are provided. Also provided are articles made from the thermoplastic elastomeric compositions.

Abstract: Disclosed is a color sealant composition with self-sealing performance useful for a tire. More specifically, disclosed are a color sealant composition with self-sealing performance useful for a tire which includes 10 to 60 wt. parts of surface modified silica, 0.05 to 5 wt. parts of pigment, 40 to 100 wt. parts of polybutene having a number average molecular weight of 1,000 to 1,500, 60 to 300 wt. parts of polybutene having a number average molecular weight of 2,000 to 3,000, and 5 to 15 wt. parts of peroxide, to 100 wt. parts of raw rubber, and a tire including the color sealant composition.

Abstract: The present invention is a refrigerator interior liner made of a rubber modified monovinylaromatic polymer composition comprising: a) a monovinylaromatic polymer matrix having an average molecular weight in weight Mw above 150,000 g/mol, b) rubber particles dispersed therein, said particles having: a volume median particle size (RPS volume) of about 8.5 ?m, a monomodal distribution with essentially no shoulder, a low-to-moderate crosslinking of the rubber expressed as a swell index (SI) above 13.8, a rubber phase volume fraction (RPVF) of at least 39%, c) a moderate amount of low- Mw plasticizers, defined as the weight fraction of solubles in methanol, and such that the weight ratio c/(a+b+c) ranges from 0 to 5%.

Abstract: Brominated organic polymer solutions from a bromination reaction are devolatilized in a devolatilizing extruder. A starting organic polymer is brominated in solution to form a brominated polymer solution. This solution is combined with a second thermoplastic polymer to form a concentrated solution. The solvent and other volatile compounds are removed from the concentrated solution in a devolatilizing extruder to form a devolatilized polymer blend.

Abstract: A hydrosilylation curable composition containing a comprising (A) 100 parts by weight of an organic polymer having on average at least 1.4 alkenyl groups per molecule; (B) an amount sufficient to cure the composition of a crosslinker having on average at least 1.4 Si—H groups per molecule; (C) a platinum group metal-containing catalyst in an amount sufficient to effect curing of the composition; (D) 0.

Abstract: A heterogeneous vulcanized polymer blend comprising a continuous phase comprising a thermoplastic polypropylene having a crystallinity of at least 30% and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron. The elastomeric copolymer has a crystallinity of less than 20% and is at least partially cross-linked such that no more than about 80 wt % of the elastomeric copolymer is extractable in cyclohexane at 23° C.

Abstract: A heterogeneous in-situ polymer blend comprising a continuous phase comprising a polypropylene having a crystallinity of at least 30% and a melting point temperature Tm greater than 130° C., and a heat of fusion ?Hf greater than 65 J/g; and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron, the elastomeric copolymer comprising ethylene units and 0.001 to 5 wt % diene by weight of the copolymer, and having a crystallinity of less than 20% and being at least partially cross-linked such that the degree of cross-link is at least 20%.

Abstract: A capsulated colorant including a colorant and a polymer resin which is coated on the colorant and has a cross-linked structure, a method of preparing the capsulated colorant, and an ink composition including the capsulated colorant. By adjusting the extent of cross-linking of the colorant on which the polymer having a cross-linked structure is coated, a capsulated colorant having a cross-linking of larger extent and a capsulated colorant having a cross-linking of smaller extent are obtained. By using an ink composition including the capsulated colorant having a larger cross-linked extent, characteristics of excellent waterfastness, lighffastness, rubfastness and optical density can be realized. In addition, by using the ink composition including the capsulated colorant having a smaller cross-linked extent, images with excellent durability and printed gloss can be realized.