Patent classifications
C08G18/246
Formaldehyde free microspheres and encapsulation
Processes for producing polymer microcapsules using vicinal functional oligomers are also described. The vicinal functional oligomers can be made by polymerizing an acrylate monomer, a styrene monomer, or both in the presence of a chain transfer agent. The vicinal functional oligomers can be reacted with epichlorohydrin to form vicinal epoxies. The vicinal epoxies can be reacted with polyamines to form epoxy polymer microspheres. The vicinal epoxies can be reacted with carbon dioxide in the presence of a catalyst to form vicinal cyclic carbonates. The vicinal cyclic carbonates can be reacted with polyamines to form isocyanate-free polymer microspheres. Polymer microspheres made by the processes are also described.
Optical adhesive and optical laminates and lenses formed with same
The present invention pertains to polyurethane-urea based optical adhesives for formation of optical film laminates, optically functional film laminates, and ophthalmic or eyeglass lenses employing the same and methods for producing the same.
Compound and polymer compound containing the compound
Provided is a compound having higher fluorescence quantum yield and higher optical stability than a conventional FLAP and a polymer compound containing the compound. ##STR00001## A: seven or eight-membered ring structure, Y.sup.1, Y.sup.2, Y.sup.3: halogen atom or the like, a1: number of Y.sup.1, a2: number of Y.sup.2, B: number of Y.sup.3, 0≤m and n≤3: when 1≤m≤3, Y.sup.1 may be substituted with a structure portion defined by m, when 1≤n≤3, Y.sup.2 may be substituted with a structure portion defined by n, and B.sup.1, B.sup.2: Formulas (2-1) to (2-3). ##STR00002## C.sup.1, C.sup.2, C.sup.3: structure containing a cyclic hydrocarbon compound, D.sup.1, D.sup.2, D.sup.3: substructure that inhibits aggregation, E.sup.1, E.sup.2, E.sup.3: polymerizable substructure, Z.sup.1: hydrogen atom or the like, c: number of substituent groups Z.sup.1, Z.sup.2, Z.sup.3: hydrogen atom or the like, and may form a ring with C.sup.2.
Two-component coating compositions for coating fiber-reinforced plastics materials
The present disclosure relates to two-component coating material compositions including a paint base component A and a curing component B. The paint base component A includes one or more polyols A1 selected from the group of polyols containing ester groups and which possess a hydroxyl number of 300 to 500 mg KOH/g and have a hydroxyl group functionality of greater than 2. The curing component B includes one or more polyisocyanates B1 having on average 2.4 to 5 NCO groups. The two-component coating material composition possesses a solids content of at least 96 wt %, and the molar ratio of the NCO groups in the curing component B to the acidic hydrogen atoms in the paint base component A is from 1:1.15 to 1:0.95. The disclosure further relates to a method for coating fiber-reinforced plastics and to a method for producing coated fiber-reinforced plastics, and to coating fiber-reinforced plastics.
DECORATIVE FILM AND DECORATIVE ARTICLE USING SAME, AND SURFACE PROTECTIVE COMPOSITION
Provided is a decorative film having excellent weather resistance, scratch resistance, and elongation properties, and a decorative article using the same, and a surface protective composition that can exhibit such properties. A decorative film according to one embodiment of the present disclosure includes a surface protective layer. The surface protective layer contains a polyurethane resin obtained by reacting a composition containing a polycarbonate diol, and a trimer or higher multimer of a diisocyanate including a cyclohexane structure, a diisocyanate including a cyclohexane structure or a prepolymer thereof, or a mixture thereof, and the decorative film satisfies Formulas 1 to 3 below: 0≤X.sup.1≤2.00 . . . Formula 1 X.sup.1≤−0.7×X.sup.2+4.67 . . . Formula 2 X.sup.1≥−0.7×X.sup.2+2.14 . . . Formula 3 where X.sup.1 is a numerical value obtained by multiplying the number of branches from a branch point relative to a converted molecular weight of the polyurethane resin by 1000, and X.sup.2 is a numerical value obtained by multiplying the number of cyclohexane structure portions included in the polyurethane resin relative to the converted molecular weight of the polyurethane resin by 1000.
A POLYURETHANE COMPOSITION HAVING LOW TOTAL VOC CONTENT CAPABLE OF RAPID CURING WITH NO NEED OF PRIMER
A polyurethane composition includes, based on the total weight of the composition, A) 20-35 wt % of polyurethane prepolymer PU-1 which is a reaction product of ethylene oxide (EO)-terminated polyether triol with an aromatic polyisocyanate, and B) 0.2-3 wt % of polyurethane prepolymer PU-2 which is a reaction product of polyester polyol with an aromatic polyisocyanate. The composition has a low TVOC content, has a good adhesion without the need of primer, can cure rapidly with a high initial bonding strength, while keeping good mechanical properties.
SURFACE PROTECTIVE FILM FOR OPTICAL MEMBER
The present invention provides a surface protective film which includes an adhesive layer on one surface of a substrate film, wherein the adhesive layer is a cured product of a composition containing: a urethane-based resin having a photoreactive group at the end or side chain thereof; a monofunctional (meth)acrylate monomer; a crosslinking agent having two or more photoreactive groups at the end thereof; a peel strength adjusting agent; and a photoinitiator, the composition being solvent-free; and the adhesive layer has peel strength of 0.5 gf/in to 10 gf/in, as measured on glass at a peel angle of 180° and a peel rate of 1.8 m/min.
Aqueous Polyurethane Resin Dispersion
An aqueous polyurethane resin dispersion, the polyurethane resin is obtainable by reacting an allophanate based isocyanate according to general formula I or II, optionally a polyether diol, a polyol containing a quaternary N-atom or tertiary amino group and a polyol selected from the group consisting of polyester polyol, polyether polyol, polycarbonate polyol, a polyacrylate polyol, a polyolefin and a polyamide polyol. The polyurethane resin is suitable as a resin in treatment liquids of substrates and images made by inkjet printing.
##STR00001##
POLYMER POLYOLS, PROCESSES FOR THEIR PREPARATION, AND THE USE THEREOF TO PRODUCE FOAMS EXHIBITING RESISTANCE TO COMBUSTION
Polymer polyols (“PMPOs”), processes for their production, and the use of such PMPOs, particularly in the production of flexible polyurethane foams. The PMPOs are produced using an ethylenically unsaturated composition that includes a crosslinker that results in crosslinks in the PMPO polymer particles that may decompose when exposed to flame temperatures. The PMPOs is capable of providing a flexible polyurethane foam that may exhibit combustibility resistance properties.
Radiation polymerizable composition, cured layer of same, optical fiber containing cured layer and method for producing same
[Problem] To provide a radiation curable resin composition which is suitable as a primary material for optical fibers, while having a high curing rate by means of irradiation of radiation [Solution] A radiation polymerizable composition for forming an optical fiber primary coating layer, said composition containing: (A) a urethane oligomer containing a structure represented by formula (I) (in formula (I), R represents a vinyl group; and * represents a bonding hand); (B) one or more compounds selected from among (i) maleic acid anhydride, (ii) a compound represented by formula (II) (in formula (II), R.sup.I represents a single bond or an alkanediyl group having from 1 to 6 carbon atoms; and R.sup.2 represents a hydrogen atom, a hydroxy group or a specific group represented by formula (II-1) or formula (II-2)), and (iii) a compound represented by formula (III) (in formula (III), R.sup.5 represents an alkanediyl group having from 1 to 6 carbon atoms); and (C) a radiation polymerization initiator.