发明名称 |
Thermoplastic composition, method of producing the same, and articles made therefrom |
摘要 |
A thermoplastic composition comprising the melt blending product of one or more thermoplastic polymers; and from 2 to 20 PHR, of one or more gloss reducing additives wherein each gloss reducing additive comprises a (meth)acrylate copolymer having a glass transition temperature of greater than or equal to 40° C. and 0.001 to 0.04 PHM derived from one or more crosslinking monomers and/or graft-linking agents having two or more ethylenically unsaturated radicals capable of free-radical polymerization, wherein a test specimen produced from the thermoplastic composition has roughness according to DIN 4768 of Ra greater than or equal to 0.6 microns, Rz greater than or equal to 6 microns, Rmax greater than or equal to 7 microns, and a gloss less than 65, 75 degree angle, is provided. Methods for producing the thermoplastic compositions, methods for producing articles from the thermoplastic compositions and such articles are also provided. |
申请公布号 |
US9399710(B2) |
申请公布日期 |
2016.07.26 |
申请号 |
US201514702964 |
申请日期 |
2015.05.04 |
申请人 |
Rohm and Haas Company |
发明人 |
Van Rheenen Paul R.;Nelliappan Veera;Stewart Seth T. |
分类号 |
C08L25/12;C08L27/06;C08L33/06;C08L33/20;C08L25/14 |
主分类号 |
C08L25/12 |
代理机构 |
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代理人 |
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主权项 |
1. A method for producing a thermoplastic composition comprising the steps of:
selecting a first component comprising one or more thermoplastic polymers; selecting a second component comprising one or more core/shell polymers wherein said one or more core/shell polymers comprise
a crosslinked core comprising one or more gloss reducing polymeric additives wherein each gloss reducing additive copolymer comprises a (meth)acrylate copolymer having a glass transition temperature of greater than or equal to 10° C. and from 0.001 and 0.04 PHM derived from one or more crosslinking monomers and/or graft-linking agents, wherein the one or more (meth)acrylate copolymers comprise from 50 to 95 percent by weight units derived from methylmethacrylate units and from 5 to 50 percent by weight derived from ethylacrylate and/or butylacrylate units, andone or more, optionally crosslinked, thermoplastic shells having a Tg of equal to or greater than 60° C. wherein the total amount of the one or more shells comprises 5 to 50 wt % of the total weight of the one or more core/shell polymers; and melt blending the second component into the first component, wherein the second component is present in an amount of from 2 to 20 PHR; thereby producing the thermoplastic composition wherein a test specimen produced from the thermoplastic composition exhibits one or more of the following properties: (a) a gloss less than 65, 75 degree angle and (b) a combination of a roughness according to DIN 4768 of Ra greater than or equal to 0.6 microns, Rz greater than or equal to 6 microns and Rmax greater than or equal to 7 microns. |
地址 |
Philadelphia PA US |