摘要:
To provide a polyacetal resin composition which is highly rigid and has excellent surface hardness, sliding characteristics, etc. That is, a polyacetal resin composition, produced by blending 100 parts by weight of a polyacetal resin (A) with 0.01-100 part(s) by weight of a branched polyacetal copolymer (B) which is obtained by copolymerization of 100 parts by weight of trioxane (a), 0.01-10 part(s) by weight of a monofunctional glycidyl compound (b) and 0-20 part(s) by weight of a cyclic ether compound (c) which is copolymerizable with trioxane.
摘要:
To offer a resin material in which various properties such as excellent appearance and rigidity inherent to a polyacetal resin are maintained and a weather (light) resistance is improved. That is, a branched polyacetal resin composition comprising 100 parts by weight of a branched polyacetal copolymer (A) having an oxymethylene group as the main repeating unit and having a branching unit represented by the following formula (I), 0.01 to 5 parts by weight of a weather (light) resistant stabilizer (B) and 0.01 to 5 parts by weight of a hindered amine substance (C): wherein m and n each is an integer of 0 to 5; the sum of m+n is 1 to 5; and R is a monovalent organic group having a molecular weight of 40 to 1000.
摘要翻译:提供一种树脂材料,其中保持聚缩醛树脂固有的优异的外观和刚性等各种性能,并提高耐候性(耐光性)。 即,含有100重量份作为主要重复单元的具有甲醛基的支链聚缩醛共聚物(A)和由下式(I)表示的支化单元的支链聚缩醛树脂组合物,其为0.01〜5重量份 耐光稳定剂(B)和0.01〜5重量份的受阻胺物质(C):其中m和n各自为0至5的整数; m + n的和为1〜5; R为分子量为40〜1000的一价有机基团。
摘要:
To provide a resin material in which various properties such as excellent appearance and rigidity inherent to a polyacetal resin are maintained and to which the antistatic property is given. That is, a branched polyacetal resin composition, comprising 100 parts by weight of a branched polyacetal copolymer (A) having an oxymethylene group as the main repeating unit and having a branching unit represented by the following formula (I), and 0.1 to 30 parts by weight of a compound (B) having a polyalkylene ether unit as the main constituting component and/or 0.01 to 10 parts by weight of an ester (C) of fatty acid with polyhydroxyl alcohol having a hydroxyl group: wherein m and n each is an integer of 0 to 5; the sum of m+n is 1 to 5; and R is a monovalent organic group having a molecular weight of 40 to 1000.
摘要翻译:提供一种树脂材料,其中保持聚缩醛树脂固有的优异外观和刚性等各种性能,并提供抗静电性能。 即,含有作为主要重复单元的具有氧亚甲基的支链聚缩醛共聚物(A)100重量份,具有下述通式(I)所示的分支单元的支链聚缩醛树脂组合物和0.1〜30重量份 的具有聚亚烷基醚单元作为主要成分的化合物(B)和/或0.01至10重量份的具有羟基的多羟基醇的脂肪酸酯(C):其中m和n各自为 0到5的整数; m + n的和为1〜5; R为分子量为40〜1000的一价有机基团。
摘要:
A polyacetal resin composition having high rigidity and also excellent in dimensional stability and creep characteristics is provided. A polyacetal resin composition prepared by blending (A) 99.9 to 90 parts by weight of a linear polyacetal resin having a melt index of 1 to 50 g/min obtained by copolymerizing (a) 99.5 to 97.5% by weight of trioxane and (b) 0.5 to 2.5% by weight of a compound selected from a mono-functional cyclic ether compound and a mono-functional cyclic formal compound, with (B) from 0.1 to 10 parts by weight of a branched or crosslinked polyacetal resin having a melt index of 0.1 to 10 g/min obtained by copolymerizing (a) 99.49 to 95.0% by weight of trioxane, (b) 0.5 to 4.0% by weight of a compound selected from a mono-functional cyclic ether compound and mono-functional cyclic formal compound and (c) 0.01 to 1.0% by weight of a poly-functional glycidyl ether compound with the number of functional groups of 3 to 4, in which (A) and (B) are selected so that the ratio between the melt index of (A) and the melt index of (B) can satisfy the relation of the following formula: 0.02≦MIB/MIA≦1.5 (1) (where MIA is a melt index of (A) and MIB is a melt index of (B))
摘要翻译:提供了具有高刚性并且尺寸稳定性和蠕变特性优异的聚缩醛树脂组合物。 通过共混(A)99重量份至90重量份熔融指数为1〜50克/分的线性聚缩醛树脂(a)99.5〜97.5重量%的三恶烷和(b)共聚合得到的聚缩醛树脂组合物, 0.5〜2.5重量%的选自单官能环状醚化合物和单官能环状缩甲醛化合物的化合物,(B)0.1〜10重量份的熔融指数为 通过共聚合(a)99.49〜95.0重量%的三恶烷,(b)0.5〜4.0重量%的选自单官能环醚化合物和单官能环状缩甲醛化合物的化合物,得到0.1〜10g / min,以及 (c)0.01〜1.0重量%的官能团数为3〜4的多官能缩水甘油醚化合物,其中选择(A)和(B),使得(A )和(B)的熔融指数可以满足下列公式的关系:<?在线公式描述 =“线上公式”end =“lead”?> 0.02 <= MI sub> / MI <= 1.5(1)<?in-line-formula 描述=“在线公式”end =“tail”?>(其中MI A A是熔融指数(A)和MI B B是熔体指数( B))
摘要:
To provide a polyacetal resin material in which an excellent sliding property is given and the appearance, dimensional precision, mechanical properties, etc. of the molded article thereof are improved as well. That is, a branched polyacetal resin composition, comprising 100 parts by weight of a branched polyacetal copolymer (A) having an oxymethylene group as the main repeating unit and having a specific branching unit, and 0.5 to 40 parts by weight of at least one polymer (B) selected from the group consisting of the following polymer (B-1) and (B-2), i.e. polymer (B-1): a graft or block copolymer prepared from an olefin polymer (b-1) and at least one vinyl polymer (b-2); and polymer (B-2): a modified olefin polymer in which an olefin polymer (b-3) is modified with at least one compound selected from the group consisting of an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride and derivatives thereof and/or 0.1 to 5 parts by weight of a lubricant (C).
摘要:
Moldable polyester resin compositions and molded articles therefrom include, based on the total weight of all resin components:(A) between 2 to 98% by weight of a compatibilizing metal sulfonate group-containing aromatic polyester copolymer which is the polycondensation reaction product of (a) an aromatic dicarboxylic acid or its ester-forming derivative, (b) a diol compound or its ester-forming derivative, and (c) an ester-forming compound containing a metal sulfonate group;(B) between 2 to 98% by weight of an additive resin which is one of (B-I) an olefin copolymer which is the copolymerization reaction product between an olefin with at least one of an .alpha.,.beta.-unsaturated carboxylic acid or its derivative and a vinyl alcohol or its ester, and (B-II) a polyamide resin; and, optionally(C) between 0 to 96% by weight of a non-compatibilizing aromatic polyester resin.The ester-forming compound containing a metal sulfonate group is preferably incorporated into the main polymer chain of the compatibilizing aromatic polyester resin in an amount between 0.01 to 15 molar percent.
摘要:
The invention is to provide a polymer, having a high affinity to water, is liquid in spite of being a polymer, simultaneously possesses also a thermal stability and is suitably used as a heating medium or a lubricant. It is the polyacetal (co)polymer, being liquid at room temperature, prepared by copolymerizing (A) 75 to 100 mol % of 1,3-dioxolane and (B) 25 to 0 mol % of trioxane and having the total amount of terminal groups of 15 to 300 mmol/kg and an amount of a hemiformal terminal group of 80 mmol/kg or less.
摘要:
It is a purpose of the present invention to provide a polyacetal resin composition that contains a glass inorganic filler, improves adhesiveness between the glass inorganic filler and the polyacetal resin, and attains excellent mechanical strength. A polyacetal resin composition comprises 100 parts by weight of a polyacetal resin component (A) and 3-200 parts by weight of a glass in organic filler (B), wherein said polyacetal resin component (A) consists of 99.9-80 parts by weight of a polyacetal resin (A1) having hydroxyl groups at 0-20 mmol/kg in the molecule and 0.1-20 parts by weight of a modified polyacetal resin (A2) having hydroxyl groups at 50-2,000 mmol/kg in the molecule.
摘要:
A process for producing a transparent film includes forming a melt from a copolyester having structural units represented by the following formulas I and II, respectively: ##STR1## wherein R groups may be the same or different from each other are each selected from the group consisting of--CH.sub.2 CH.sub.2, --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 --, --CH--CH.sub.2 --, ##STR2## and the molar fraction ratio of the structural units of formula II to the total structural units of formulas I and II is between 0.02 to 0.020, which a melt of the copolyester is formed into a film, rapidly quenched to solidify the copolyester and impart low crystallinity thereto. The solidified film is aged at a temperature of 60 degree centigrade or below, and then heat-treated at a temperature between the glass transition point (Tg) of the copolyester and no greater than 2.degree. C. below the melting point of the copolyester minus 2.
摘要:
A modified polyester resin is the reaction product of:(A) an acid component mainly comprised of terephthalic acid, 2,6-naphthalene dicarboxylic acid or a lower alcohol ester thereof,(B) a diol component mainly comprising an alkylene glycol having 2 to 8 carbon atoms, and(C) an aromatic sulfonic acid compound of the following general formula (1):HO(RO).sub.n --Ar--SO.sub.3 M (1) where Ar represents a benzene or naphthale ring, n represents an integer from 1 to 10, R represents a group selected from among alkylenes having 2 or 3 carbon atoms and when n is 2 or more, R may be the same as or different from one another, and M represents an alkali metal selected from lithium, sodium and potassium. The modified polyester resin also satisfies the following formulas (2) and (3):0.25.ltoreq.x.ltoreq.100 (meq/kg) (2)2.ltoreq.(x/CEG).times.100.ltoreq.150 (%) (3) where x represents the amount of the aromatic sulfonic acid compound represented by the above general formula (1) introduced thereinto and CEG represents the amount of the carboxy end groups, and x and CEG are each expressed in millequivalent per kilogram (meq/kg) of the polymer.