C08G18/3221

RIGID POLYURETHANE FOAM COMPRISING POLYESTER POLYETHER POLYOL
20180282469 · 2018-10-04 · ·

Polyurethane foams are provided. The polyurethane foams are produced from a formulation that includes an isocyanate reacting mixture, an isocyanate component, and a blowing agent. The isocyanate reacting mixture includes at least 40 wt % of at least one propoxylated polyester-polyether polyol based on the total weight of the isocyanate reacting mixture. The isocyanate reacting mixture also includes at least one of propoxylated sucrose polyol or propoxylated sorbitol polyol. The propoxylated sucrose polyol and/or propoxylated sorbitol polyol has a hydroxyl number of from about 300 mg KOH/g to about 600 mg KOH/g. The polyurethane foam has a compressive strength of at least 130 kPa, and a stoichiometric index of the isocyanate component to the isocyanate reacting mixture is between about 1.0 and 1.7.

Shape Memory Polymers
20240309143 · 2024-09-19 ·

New shape memory polymer compositions, methods for synthesizing new shape memory polymers, and apparatus comprising an actuator and a shape memory polymer wherein the shape memory polymer comprises at least a portion of the actuator. A shape memory polymer comprising a polymer composition which physically forms a network structure wherein the polymer composition has shape-memory behavior and can be formed into a permanent primary shape, re-formed into a stable secondary shape, and controllably actuated to recover the permanent primary shape. Polymers have optimal aliphatic network structures due to minimization of dangling chains by using monomers that are symmetrical and that have matching amine and hydroxl groups providing polymers and polymer foams with clarity, tight (narrow temperature range) single transitions, and high shape recovery and recovery force that are especially useful for implanting in the human body.

Hot-melt adhesive composition comprising bio-based polyester polyols

The present invention relates to a hot-melt adhesive composition comprising at least one polyester polyol based on Betulin and at least one NCO-terminated compound as well as a method for the production of a laminated article using the inventive hot-melt adhesive composition.

Non-fluorinated and partially fluorinated polymers

A polymer composition with (A) a first poly(meth)acrylate polymer or urethane polymer; and (B) a second poly(meth)acrylate polymer or urethane polymer which has a residue X incorporated therein, where X is the residue of a cyclic or acyclic sugar alcohol which is substituted with at least one R.sup.1; C(O)R.sup.1; (CH.sub.2CH.sub.2O).sub.n(CH(CH.sub.3)CH.sub.2O).sub.mR.sup.2; (CH.sub.2CH.sub.2O).sub.n(CH(CH.sub.3)CH.sub.2O).sub.mC(O)R.sup.1; or mixtures thereof; where the cyclic or acyclic sugar alcohol is selected from a saccharide, reduced sugar, aminosaccharide, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m is independently 0 to 20; m+n is greater than 0; each R.sup.1 is independently a linear or branched alkyl group having 5 to 29 carbons optionally comprising at least 1 unsaturated bond; and each R.sup.2 is independently H, a linear or branched alkyl group having 6 to 30 carbons optionally comprising at least 1 unsaturated bond, or mixtures thereof.

Branched polyester-urethane resins and coatings comprising the same

An uncured branched polyester-urethane resin prepared by free radical polymerization of an unsaturated polyester prepolymer having a polyol segment, an unsaturated polycarboxylic acid and/or an anhydride and/or ester thereof, and a urethane segment, wherein the polymerization occurs primarily by reaction of the unsaturation is disclosed. Coatings comprising the same are also disclosed, as are substrates coated at least in part with such coatings.

Photocurable resin composition and use thereof
12122867 · 2024-10-22 · ·

A photocurable resin composition according to the present invention contains an anionic-group-containing photosensitive resin comprising a photosensitive urethane resin, a photopolymerization initiator and a thermal curing agent, wherein the photosensitive urethane resin is produced by reacting a raw material mixture containing (A) a polyol having at least an ester bond and also having an unsaturated bond at least in the main chain thereof, (B) a compound having at least one active-hydrogen-containing group and at least one anionic group in the molecule thereof, (C) a polyisocyanate and (D) a compound having at least one active-hydrogen-containing group and an unsaturated bond group in the molecule thereof, and the photosensitive urethane resin has an ester bond and an unsaturated bond in the main chain in the same molecule, wherein at least one of a side chain and a terminal has an anionic group and a side chain has an unsaturated bond group.

Use of non-fluorinated or partially fluorinated urethanes in coatings

The present invention is a method for imparting surface effects to a substrate using at least one hydrophobic compound with at least one linkage of Formula I:
NHC(O)X(I)
wherein X is the residue of a cyclic or acyclic sugar alcohol which is substituted with at least one R.sup.1; C(O)R.sup.1; (CH.sub.2CH.sub.2O).sub.n(CH(CH.sub.3)CH.sub.2O).sub.mR.sup.2; (CH.sub.2CH.sub.2O).sub.n(CH(CH.sub.3)CH.sub.2O).sub.mC(O)R.sup.1; or mixtures thereof; where the cyclic or acyclic sugar alcohol is selected from a saccharide, reduced sugar, aminosaccharide, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m is independently 0 to 20; m+n is greater than 0; each R.sup.1 is independently a linear or branched alkyl group having 5 to 29 carbons optionally comprising at least 1 unsaturated bond; and each R.sup.2 is independently H, a linear or branched alkyl group having 6 to 30 carbons optionally comprising at least 1 unsaturated bond, or mixtures thereof.

AN ANTI-ANGIOGENIC AGENT AND RELATED METHODS

There is provided an anti-angiogenic agent comprising: a multi-block copolymer in the form of one or more micelles, wherein the copolymer comprises a first poly (alkylene glycol) block, a second poly (alkylene glycol) block and a polyester block. There is also provided a method of preparing said anti-angiogenic agent and medical uses of said anti-angiogenic agent.

Two-coat barrier system comprising polyurethane
09902864 · 2018-02-27 · ·

A two-coat barrier system employing a coating of a water-dispersible or solvent-soluble polyurethane resin with innate gas and moisture vapor barrier properties and an additional coating of a multivalent metal cation to enhance the overall barrier performance without the need to add fillers.

Method for applying a material containing a meltable polymer, more particularly a hot-melt adhesive, above the decomposition temperature thereof

The invention relates to a method for applying a material containing a meltable polymer comprising the step of applying a filament of the at least partially molten material from a discharge opening of a discharge element onto a substrate. The meltable polymer has the following properties: a melting point (DSC, differential scanning calorimetry; second heating with a heating rate of 5 C./min) in a range from 40 C. to 120 C.; a glass transition temperature (DMA, dynamic mechanical analysis in accordance with DIN EN ISO 6721-1:2011) in a range from 70 C. to 30 C.; a storage modulus G (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at 20 C. above the melting point of 1.Math.10.sup.4 Pa; a storage modulus G (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at 10 C. below the melting point with prior heating to a temperature of 20 C. above the melting point and subsequent cooling with a cooling rate of 1 C./min of 1.Math.10.sup.7 Pa; wherein the filament has an application temperature of 100 C. above the melting point of the meltable polymer for 5 minutes during the application process and wherein the meltable polymer further has the property that the storage modulus G (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) of the meltable polymer at the highest application temperature reached during the application process is smaller by a factor of 10 than the storage modulus G (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at a temperature of 20 C. above the melting point of the meltable polymer.