C08K2003/265

System and method for flexible sealant with density modifier

The disclosed latex system comprises a one-component, closed-cell, semi-foam, mastic sealant using gas-filled, flexible, organic microspheres to create a product that is elastic and compressible under pressure without protruding in an outward direction when compressed, thereby allowing the applied sealant to compress in an enclosed, maximum-filled channel unlike typical mastic sealants (while retaining the ability to rebound). This allows the sealant to function as a gasket, and, once fully cured, to have properties including vibration damping, insulating, and condensation resistance. The sealant can be formulated as an air barrier or a vapor barrier and at various degrees of moisture resistance. It may be applied by different packaging variations including aerosol can (bag in can or bag on valve), airless sprayer, cartridge tubes, foil tubes, squeeze tubes, and buckets to be applied using a brush, trowel, spatula, etc. The disclosed mastic sealant can also be formulated to be smoke-resistant and flame-resistant.

WATER-BASED DISPERSION FLOOR ADHESIVE WITH HIGH DIMENSIONAL STABILITY

A single-component adhesive composition includes: an aqueous acrylic polymer dispersion comprising water and at least one water-dispersed acrylic polymer P; between 0.2 wt.-% and 2.0 wt.-%, preferably between 0.5 wt.-% and 1.5 wt.-%, based on the total composition, of at least one water-dispersed or water-dissolved cross-linker C that can react with carboxylate groups; and between 20 wt.-% and 60 wt.-%, based on the total composition, of at least one filler F with the mean particle size D50 of its primary particles being ≤10 μm, wherein said at least one water-dispersed acrylic polymer P contains free carboxylic acid groups. The composition is highly suitable as adhesive for floor coverings and shows good tack in the wet state and at the same time enables excellent dimensional stability of the bonded floor coverings.

LOW-ODOR SOFT PVC MATERIAL

Disclosed is a low-odor soft PVC material. The material comprises the following components in parts by weight: 100 parts of a PVC resin, 60-125 parts of a plasticizer, 2-10 parts of a heat stabilizer, 10-50 parts of a filler, 0-2 parts of an antioxidant, 0.02-0.06 parts of a lubricant and 0.5-1 parts of a deodorant. The PVC resin has a degree of polymerization of lower than 1300; and the deodorant comprises nano calcium carbonate and zinc ricinoleate. By selecting a PVC resin with a low degree of polymerization and a deodorant with a high deodorizing efficiency, the low-odor soft PVC material of the present invention reduces odors from the source, has a small overall impact on the appearance and performance of automotive interior parts, and is low in cost and suitable for large-scale production.

ESTER-BASED COMPOUND AND USE THEREOF
20230054496 · 2023-02-23 ·

Provided are a novel ester-based compound and a use thereof. A use of a novel ester-based compound for improving heat resistance and compatibility as a plasticizer is provided. When the ester-based compound according to the present invention is used as the plasticizer of a heat-resistant resin composition, a synergistic effect on improvement of physical properties such as migration resistance and heating loss is provided to contribute to improvement of the physical properties of a molded article, and due to a rapid absorption rate and a short melting time, processability of the heat-resistant resin composition may be improved.

CURABLE COMPOSITION

A curable composition contains (A) a perfluoro(poly)ether group-containing silane compound having two or more Si atoms bonded to at least one group selected from the group consisting of a hydroxyl group and a hydrolyzable group, (B) a compound (other than (A)) having at least two OR.sup.2 groups bonded to an Si atom (in the formula, R.sup.2 each independently are a hydrogen atom or a monovalent organic group at each occurrence) or a partial hydrolysis condensate thereof, (C) a condensation catalyst, and (D) an inorganic filler with a primary particle size from 0.01 to 0.1 μm.

BIODEGRADABLE RESIN COMPOSITION AND MOLDED ARTICLE
20220363815 · 2022-11-17 ·

Provided are an inorganic substance powder-blended biodegradable resin composition exhibiting excellent processability, sufficient mechanical strength and excellent flexibility as a molded product, and having economic advantage, as well as having excellent degradability under a natural environment and a molded product formed by using the composition. Provided is a molded product molded by using an inorganic substance powder-containing biodegradable resin composition including: a biodegradable resin and an inorganic substance powder in a range by mass of 10:90 to 70:30, in which the biodegradable resin is a multicomponent hydroxyalkanoic acid copolymer comprising lactic acid and other hydroxyalkanoic acid and the inorganic substance powder is heavy calcium carbonate.

CELLULOSE ACETATE RESIN COMPOSITION

A cellulose acetate resin composition may include a cellulose acetate (A) having a total degree of acetyl substitution of 2.60 or less; a filler (B); and a plasticizer (C). The filler (B) may be selected from the group consisting of (b1) a predetermined inorganic compound, (b2) a predetermined metal salt, (b3) cellulose or hemicellulose, and (b4) wood flour. The plasticizer (C) may he selected from (c1) a glycerin ester-based plasticizer, (c2) an ether-based plasticizer, and (c3) a glycol ester-based plasticizer. A content of the component (A) may he from 4.5 to 90 mass %. A total content of the component (B) may be from 5 to 50 mass %. A total content of the component (C) may be from 5 to 35 mass %.

SILICONE-BASED BARRIER COMPOSITIONS

A liquid applied, silicone-based air and water barrier coating composition and its use as a silicone-based air and water barrier is provided. The barrier is generally vapour permeable and suitable for the construction industry. The liquid coating composition generally has a shelf-life of at least 9 months. The liquid coating composition comprises: (i) a crosslinked polysiloxane dispersion comprising (c) a surfactant and (d) water; (ii) a combination of rheology modifiers and at least one of the following ingredients: (iii) one or more fillers and/or (iv) one or more stabilizers.

RECYCLED POLYETHYLENE TEREPHTHALATE COMPOSITION
20230060016 · 2023-02-23 · ·

A composition for production of injection-molded articles is made of recycled polyethylene terephthalate in an amount of over 90 wt %, a nucleation agent selected from salts of citrate acid, salts of carbonic acid, titanium oxide and mixtures thereof in an amount of 0.2-1 phr, and an impact modifier in the form of an unsaturated organic compound selected from acids, anhydrides, esters and metallic salts of at least one of the following: maleic, acrylic, methacrylic, itaconic, crotonic, alpha-methyl crotonic and cinnamic, in an amount of 2-4 phr. Optical brighteners, heat stabilizers and wax can also be added. The composition has high tensile strength, low shrinkage and high color stability, especially when compared to pure RPET.

SEALER COMPOSITION FOR COATING FILM WITH IMPROVED APPEARANCE QUALITY
20230059631 · 2023-02-23 ·

Disclosed are a sealer composition and a coating film with improved appearance quality. The sealer composition for a coating film includes a polyol mixture containing a polyester polyol and a polyether polyol in a predetermined ratio, an isocyanate compound including a blocked isocyanate, and a curing catalyst and the coating film prepared from the sealer composition has improved appearance quality as well as improved abrasion resistance.