Patent classifications
C08K5/105
Hot-melt pressure-sensitive adhesive composition based on polyurethane/(meth)acrylic
A hot-melt pressure-sensitive adhesive composition comprises: a) at least one polyurethane comprising at least two end functional groups T of following formula (I):
X(CO)CH(R.sup.V)CH.sub.2(I) b) at least one tackifying resin chosen from the following resins: (b1) terpene/phenolic resins; (b2) the resins resulting from the polymerization of -methylstyrene, optionally followed by a reaction with at least one phenol; (b3) the polymeric resins (optionally at least partially hydrogenated) resulting from mainly C.sub.9 aromatic fractions; and c) at least one polymerization inhibitor.
The polyurethane(s) (a): tackifying resin(s) (b) ratio by weight ranges from 4:6 to 6:4. The said polyurethane (a) has a mean functionality of functional groups of formula (I) strictly of greater than 1.9.
STABLE POLYCARBONATE COMPOSITION
A composition includes a polycarbonate resin, a heat stabilizer, and an acid stabilizer. An article formed from the composition, when tested using a 2.5 mm color plaque, includes a level of free OH groups that is less than a level of free OH groups of a reference article injection molded from a substantially similar reference composition consisting essentially of the polycarbonate resin without the heat stabilizer and the acid stabilizer. Methods for forming the molded article in accordance with the above are also described.
STABLE POLYCARBONATE COMPOSITION
A composition includes a polycarbonate resin, a heat stabilizer, and an acid stabilizer. An article formed from the composition, when tested using a 2.5 mm color plaque, includes a level of free OH groups that is less than a level of free OH groups of a reference article injection molded from a substantially similar reference composition consisting essentially of the polycarbonate resin without the heat stabilizer and the acid stabilizer. Methods for forming the molded article in accordance with the above are also described.
VINYL CHLORIDE RESIN COMPOSITION FOR POWDER MOLDING, VINYL CHLORIDE RESIN MOLDED BODY AND LAMINATE
The present invention relates to a polyvinyl chloride composition for powder molding including a polyvinyl chloride (A) in an amount of 100 parts by mass, a plasticizer in an amount of 110 parts by mass or more and 150 parts by mass or less, and an acrylic polymer in an amount of 4 parts by mass or more and 23 parts by mass or less. The polyvinyl chloride (A) has an average particle diameter of 50 m or more and 500 m or less and an average degree of polymerization of 1,350 or more. The acrylic polymer has an average particle diameter of 0.01 m or more and 10 m or less and contains a constitutional unit derived from a (meth)acrylic ester in an amount of 50 mass % or more. The (meth)acrylic ester includes at least one selected from the group consisting of (meth)acrylic ester of an aliphatic alcohol having two or more carbon atoms and a (meth)acrylic ester of an aromatic alcohol. Thus, provided are a polyvinyl chloride composition for powder molding from which a molded body having high flexibility after heat aging as well as favorable surface characteristics can be produced, a polyvinyl chloride molded body, and a laminate.
VINYL CHLORIDE RESIN COMPOSITION FOR POWDER MOLDING, VINYL CHLORIDE RESIN MOLDED BODY AND LAMINATE
The present invention relates to a polyvinyl chloride composition for powder molding including a polyvinyl chloride (A) in an amount of 100 parts by mass, a plasticizer in an amount of 110 parts by mass or more and 150 parts by mass or less, and an acrylic polymer in an amount of 4 parts by mass or more and 23 parts by mass or less. The polyvinyl chloride (A) has an average particle diameter of 50 m or more and 500 m or less and an average degree of polymerization of 1,350 or more. The acrylic polymer has an average particle diameter of 0.01 m or more and 10 m or less and contains a constitutional unit derived from a (meth)acrylic ester in an amount of 50 mass % or more. The (meth)acrylic ester includes at least one selected from the group consisting of (meth)acrylic ester of an aliphatic alcohol having two or more carbon atoms and a (meth)acrylic ester of an aromatic alcohol. Thus, provided are a polyvinyl chloride composition for powder molding from which a molded body having high flexibility after heat aging as well as favorable surface characteristics can be produced, a polyvinyl chloride molded body, and a laminate.
RESIN COMPOSITION AND MOLDED ARTICLE
A resin composition contains, per 100 parts by mass of a resin ingredient composed of 10 to 60 parts by mass of a polyphenylene ether resin and 90 to 40 parts by mass of a polyamide resin: 0.01 to 1.0 parts by mass of a compatibilizer; 0.01 to 1.0 parts by mass of a phenolic antioxidant represented by formula (1); 0.01 to 1.0 parts by mass of a phosphorus-containing antioxidant; and 0.01 to 1.0 parts by mass of an amine-based antioxidant, having a mass ratio given by phenolic antioxidant represented by formula (1)/phosphorus-containing antioxidant/amine-based antioxidant of 1/0.1 to 2.0/0.1 to 2.0.
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LOW VOLATILE TACKIFIER COMPOSITIONS
A tackifier composition comprising at least one thermoplastic hydrocarbon resin and an antioxidant composition is provided; wherein a portion of the volatile organic compounds in the thermoplastic hydrocarbon resin has been removed; wherein the antioxidant composition comprises at least one primary antioxidant and at least one secondary antioxidant; and wherein the levels of individual volatile organic compound monitored in the tackifier composition are less than about 0.5 ppm as measured by GC/MS headspace analysis. Processes for producing the tackifier composition are also provided as well as adhesives comprising the tackifier compositions.
PACKAGING ADHESIVES COMPRISING LOW VOLATILE TACKIFIER COMPOSITIONS
A tackifier composition comprising at least one thermoplastic hydrocarbon resin and an antioxidant composition is provided; wherein a portion of the volatile organic compounds in the thermoplastic hydrocarbon resin has been removed; wherein the antioxidant composition comprises at least one primary antioxidant and at least one secondary antioxidant; and wherein the levels of individual volatile organic compound monitored in the tackifier composition are less than about 0.5 ppm as measured by GC/MS headspace analysis. Processes for producing the tackifier composition are also provided as well as adhesives comprising the tackifier compositions.
PRODUCT ASSEMBLY ADHESIVES COMPRISING LOW VOLATILE TACKIFIER COMPOSITIONS
A tackifier composition comprising at least one thermoplastic hydrocarbon resin and an antioxidant composition is provided; wherein a portion of the volatile organic compounds in the thermoplastic hydrocarbon resin has been removed; wherein the antioxidant composition comprises at least one primary antioxidant and at least one secondary antioxidant; and wherein the levels of individual volatile organic compound monitored in the tackifier composition are less than about 0.5 ppm as measured by GC/MS headspace analysis. Processes for producing the tackifier composition are also provided as well as adhesives comprising the tackifier compositions.
HYGIENE ADHESIVES COMPRISING LOW VOLATILE TACKIFIER COMPOSITIONS
A tackifier composition comprising at least one thermoplastic hydrocarbon resin and an antioxidant composition is provided; wherein a portion of the volatile organic compounds in the thermoplastic hydrocarbon resin has been removed; wherein the antioxidant composition comprises at least one primary antioxidant and at least one secondary antioxidant; and wherein the levels of individual volatile organic compound monitored in the tackifier composition are less than about 0.5 ppm as measured by GC/MS headspace analysis. Processes for producing the tackifier composition are also provided as well as adhesives comprising the tackifier compositions.