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    • 5. 发明申请
    • THERMALLY STABLE COMPOSITIONS CONTAINING RESIN-LINEAR ORGANOSILOXANE BLOCK COPOLYMERS
    • 含有线性有机硅氧烷嵌段共聚物的热稳定组合物
    • US20130165602A1
    • 2013-06-27
    • US13822122
    • 2011-09-22
    • John Bernard HorstmanRandall SchmidtSteven Swier
    • John Bernard HorstmanRandall SchmidtSteven Swier
    • C08G77/44
    • C08G77/44C08G77/04C08G77/14C08G77/16C08G77/26C08G77/48C08G77/54C08G77/70C08G77/80H01L23/296H01L2924/0002H01L2924/00
    • Solid compositions of organosiloxane block copolymers are disclosed having a tensile strength greater than 1.0 MPa and a % elongation at break greater than 40%. The organosiloxane block copolymers comprise: 40 to 90 mole percent disiloxy units of the formula [R12SiO2/2] 10 to 60 mole percent trisiloxy units of the formula [R2SiO3/2] 0.5 to 35 mole percent silanol groups [≡SiOH] where R1 is independently a C1 to C30 hydrocarbyl, R2 is independently a C1 to C20 hydrocarbyl, wherein; the disiloxy units [R12SiO2/2] are arranged in linear blocks having an average of from 10 to 400 disiloxy units [R12SiO2/2] per linear block, the trisiloxy units [R2SiO3/2] are arranged in non-linear blocks having a molecular weight of at least 500 g/mol, and at least 30% of the non-linear blocks are crosslinked with each other, each linear block is linked to at least one non-linear block, and the organosiloxane block copolymer has a molecular weight (Mw) of at least 20,000 g/mole.
    • 公开了具有大于1.0MPa的拉伸强度和断裂伸长率大于40%的有机硅氧烷嵌段共聚物的固体组合物。 有机硅氧烷嵌段共聚物包括:40至90摩尔%的式[R 12 SiO 2/2]的10至60摩尔%的式[R 2 SiO 3/2]的三甲氧基单元的摩尔比为0.5至35摩尔%的硅烷醇基[= SiOH]的式 独立地为C 1至C 30烃基,R 2独立地为C 1至C 20烃基,其中; 二甲硅烷氧基单元[R 12 SiO 2/2]排列成每线性嵌段平均为10〜400个二甲硅烷基单元[R 12 SiO 2/2]的线性嵌段,三硅氧烷单元[R 2 SiO 3/2]排列在具有分子 至少500g / mol的重量,至少30%的非线性嵌段彼此交联,每个直链嵌段连接至少一个非线性嵌段,有机硅氧烷嵌段共聚物的分子量( Mw)至少为20,000g / mol。
    • 9. 发明申请
    • Flame retardant compositions
    • 阻燃组合物
    • US20060252890A1
    • 2006-11-09
    • US10512733
    • 2003-05-15
    • David RomeneskoRandall SchmidtAtsushi TogashiGary Wieber
    • David RomeneskoRandall SchmidtAtsushi TogashiGary Wieber
    • C08L83/00
    • C08L101/00C08G77/12C08G77/16C08G77/18C08G77/20C08G77/44C08G77/70C08L83/04C08L2666/14C08L2666/02
    • This invention relates to a flame retardant composition comprising: (a) 81 to 99.99 weight percent of a thermoplastic resin, thermoset resin, thermoplastic resin blend, or thermoset resin blend which upon burning forms a char and (b) 0.01-19 weight percent of a silsesquioxane resin having a weight average molecular weight of greater than 300 and having the average molecular formula: (R3SiO1/2)a (R2SiO2/2)b (RSiO3/2)c (SiO4/2)d(RO1/2)e (OH1/2)f wherein each R is hydrogen, an alkyl group, an alkenyl group, or an aryl group having from 6 to 12 carbon atoms, a and b are zero or positive numbers and the value of a+b is greater than zero, c is a positive number, d, e and f are zero or positive numbers with the provisos that the copolymer comprises at least 40 mole percent of RSiO3/2 units, the copolymer comprises less than 10 mole percent SiO4/2 units, greater than 30 mole percent of the silicon-bonded R groups are silicon-bonded aryl groups, greater than 0.5 mole percent of the silicon-bonded R groups are silicon-bonded hydrogen atoms, the content of silicon-bonded hydroxyl groups is equal to or less than 2 weight percent, and the content of silicon-bonded alkoxy groups where the alkoxy group is methoxy or ethoxy is equal to or less than 5 weight percent.
    • 本发明涉及一种阻燃剂组合物,其包含:(a)81至99.99重量%的热塑性树脂,热固性树脂,热塑性树脂共混物或热固树脂共混物,其在燃烧时形成炭,(b)0.01-19重量% 重均分子量大于300且具有以下平均分子式的倍半硅氧烷树脂:(R 3 3 SiO 1/2) (R 2 SiO 2/2/2)b(RS 3 O 3/2))C(N 2) (SiO 2/2/2)2(SiO 2/2) (OH 1/2)其中每个R是氢,烷基,烯基或具有6至12个碳原子的芳基,a和b 是零或正数,a + b的值大于零,c是正数,d,e和f是零或正数,条件是共聚物包含至少40摩尔%的RSiO 3/2个单元,共聚物包括较少 超过10摩尔%的SiO 2/2/2单位,大于30摩尔%的与硅键合的R基团是硅键合的芳基,大于0.5摩尔%的与硅键合的R基团是硅 键合的氢原子的含量等于或小于2重量%,烷氧基为甲氧基或乙氧基的硅键合烷氧基的含量等于或小于5重量%。