30results about How to "Less yellowing" patented technology

A prepolymer blend for a thermosetting polyurethane material that allows for control of the reaction time is disclosed herein. The prepolymer blend is preferably composed of a polyurethane prepolymer and dimethyl methylphosphonate. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.

An object of the present invention is to provide an artificial nail composition having improved curability. Another object of the present invention is to provide an artificial nail composition which causes less yellowing and has excellent internal curability.

The artificial nail composition comprises:

• • a component (a): a compound having at least one radical polymerizable unsaturated double bond in the molecule, and a component (b): a photopolymerization initiator selected from (i) an acylphosphine oxide-type photopolymerization initiator and (ii) a mixture of an acylphosphine oxide-type photopolymerization initiator and an α-hydroxyalkylphenone-type photopolymerization initiator, wherein the amount of the component (b) is 0.05 to 4.00 parts by weight with respect to 100 parts by weight of the component (a). It is preferred that the acylphosphine oxide-type photopolymerization initiator is monoacylphosphine oxide and/or bisacylphosphine oxide, and the α-hydroxyalkylphenone type polymerization initiator is 1-hydroxy-cyclohexyl-phenyl-ketone or 2-hydroxy-2-methyl-1-phenyl-propan-1-one.

Provided is a (meth)acrylate composition containing: (A) at least one (meth)acrylate compound selected from the group consisting of a (meth)acrylate-modified silicone oil, a (meth)acrylate having a long-chain aliphatic hydrocarbon group, and a polyalkylene glycol (meth)acrylate having number-average molecular weight of not less than 400; (B) a (meth)acrylate compound to which an alicyclic hydrocarbon group having 6 or more carbon atoms is ester-linked; (C) (meth)acrylic acid or a (meth)acrylate compound having a polar group; (D) a radical polymerization initiator; and (E) a white pigment.

The present invention relates to fatliquoring agents for leathers, skins or hides, which contain neutral halogen-free organic phosphorus compounds, and the use of such fatliquoring agents for the flame-retardant treatment of leather and a process for fatliquoring in the production of flame-retardant leather, skin or hides.

Provided are an active energy ray-curable composition fox flooring materials, which is unlikely to cause a curing defect between a cured portion and an uncured portion even when a movable curing device having a light source is used is unlikely to cause yellowing attributable to exposure to natural light for a long period of time, and exhibits a high re-coatability, while exhibiting conventional physical performance, and a construction method therefor. Further, also provided are an active energy ray-curable composition for antibacterial flooring materials, which has antibacterial properties, and a construction method therefor. The active energy ray-curable composition for flooring materials is formed by appropriately applying a specific carboxyl group-containing active energy ray-polymerizable compound, a specific urethane oligomer, a specific hyperbranched oligomer, specific polyfunctional acrylate, and a specific photopolymerization initiator in combination.

Various embodiments of the present invention generally relate to a light-cure and dual-cure resin that have low color and is color stable over conventional light, self and dual-cured resins. Additionally, the light-cure resin has enhanced degree of cure over conventional light-cure resins. Finally, due to the low color and enhanced color stability of the dual-cure resins, their inherent property of having lower shrinkage stress as compared to light-cure resins can now be utilized in various dental applications and other resin applications.

The invention relates to a modified pearlescent pigment and its production process by post-coating. The pigment includes a sheet substrate, titanium dioxides coated on the substrate and hydrates of metal phosphate(s) and metal oxide(s) on the titanium dioxide coating. This pigment could keep color stable during its use and exhibit excellent discoloration resistance caused by ultraviolet as well as prevent yellowing during its use in use polyolefin compositions containing antioxidant.

Disclosed is a surface protective sheet with less tinge of yellow which is excellent in ultraviolet protection. Specifically disclosed is a surface protective sheet having an ultraviolet protective layer on at least one side of a plastic film. The ultraviolet protective layer is composed of an ultraviolet absorbent, an ionizing radiation curable resin composition and spherical particles having an average particle size of 1-20 mum, and the spherical particles are contained in the ultraviolet protective layer in an amount of 0.4-3 weight%. Preferably, the ultraviolet protective layer further contains 0.01-1 weight% of organopolysiloxane.

The invention relates to a low temperature seedling hardening method for a psammosilene tunicoides tissue culture seedling. The method comprises the steps: transferring psammosilene tunicoides bottled seedling into a seedling hardening culture chamber, and fumigating in a closed manner for 20 min by virtue of potassium permanganate and formaldehyde; culturing the tissue culture seedling for 7 days in an environment with good ventilation at the ambient temperature of 16 to 18 DEG C, the light intensity of 1800 to 2000 Lx and the lighting time of 12 h/d; adjusting the temperature to 11 to 13 DEG C, adjusting the light intensity to 1500 to 1800 Lx, continuously culturing for 14 days, then taking out the psammosilene tunicoides tissue culture seedling by virtue of tweezers, soaking in a 800-time carbendazim disinfectant for 2 h, air-drying, and then transplanting the psammosilene tunicoides tissue culture seedling into a seedling hardening matrix. On the basis that the content of soluble sugar of plants is increased in a low temperature environment, the water content is reduced, the enzyme activity is reduced and air holes are closed, the stress resistance of the plant is finally improved, the rejuvenation period is obviously shortened after the seedling is transplanted, and the probability of the plant infected by root rot and stem rot is reduced, so that the transplanting survival rate is increased to 95 percent or more, and the seedling hardening transplanting survival rate is greatly increased.

A polymeric composition for making aqueous polymeric dispersions, comprises hydrophilic macromonomer (I), hydrophobic polymer (II) and bridging monomer (III), wherein the hydrophilic macromonomer (I) and hydrophobic polymer (II) are grafted together in the presence of bridging monomer (III) and the hydrophilic macromonomer (I) has a structure according to formula (1): R—C(X)═CH₂, wherein R is a polymeric group and X is a radical stabilizing group. The aqueous polymeric composition is used for making a coating composition, a printing ink, an adhesive, a sealant or caulking material.

The development and method for the production of an alkyl ethoxysulfate and alkyl ethoxysulfate/ethoxylated alcohol binary surfactant system using a sulfation process. A process for producing an alkyl ethoxysulfate/ethoxylated alcohol binary surfactant system additionally comprises the step of combining the resultant alkyl ethoxysulfate with the ethoxylated alcohol feed stream.

A vinyl alcohol polymer-containing coating agent for paper is provided that allows a curing step to be omitted after a paper surface is coated therewith and makes it possible to form a layer (for example, a coating layer or a color developing layer) that is excellent in water resistance and is subjected to less yellowing over time. It is an aqueous composition containing a vinyl alcohol polymer (A) in which the content X of vinyl alcohol units (mol %) and the content Y of ethylene units (mol %) satisfy a formula X+0.2Y>95, where X<99.9 and 0≦Y≦10, and an addition condensate (B) between ethylene urea and glyoxal in which the content of terminal aldehyde groups per gram of solid content is 1.2 to 3.0 (mmol), wherein the solid content weight ratio between the vinyl alcohol polymer (A) and the addition condensate (B) is in a range of (A):(B)=99:1 to 50:50.

The invention relates to a process to produce a stable fluoropolymer latex using non-fluorinated surfactant with greater thermal stability. The polymerization is run at pressures greater than typically used. The resulting polymer exhibit improved melt color stability as compared to those produced under similar conditions at lower pressures.

A thermoplastic molding composition characterized by its optical brightness and good weathering resistance is disclosed. The composition contains a poly(ester) carbonate an optical brightener conforming to