公开(公告)号：US20140357776A1

公开(公告)日：2014-12-04

申请号：US14366829

申请日：2012-12-20

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Luis G. Zalamea ,  Roberto Rigobello ,  Thomas T. Allgeuer ,  Gerd Lohse

IPC: C08K3/22

CPC classification number: C08K3/22 ,  C08K2003/2265

Abstract: The instant invention provides a rotomolding composition. The a rotomolding composition comprises at least 95 percent by weight of a thermoplastic polymer; and from 0.1 to 3 percent by weight of metal oxide lamellae; wherein the rotomolding composition is characterized by at least one of the following properties: (a) having a retention at elongation at break of at least 85 percent after 4000 hours of accelerated aging; or (b) having a ductility improvement of at least 50 percent relative to a similar composition free of said metal oxide lamellae

Abstract translation: 本发明提供了一种滚塑组合物。 该滚塑组合物包含至少95重量％的热塑性聚合物; 和0.1至3重量％的金属氧化物薄片; 其中所述滚塑组合物的特征在于以下性质中的至少一个：（a）在加速老化4000小时后具有至少85％的断裂伸长率的保留; 或（b）相对于不含所述金属氧化物薄片的类似组合物，其延性提高至少为50％

公开(公告)号：US09649794B2

公开(公告)日：2017-05-16

申请号：US15041105

申请日：2016-02-11

Applicant: Dow Global Technologies LLC

Inventor： Miguel A. Prieto Goubert ,  Adrian J. Birch ,  Luis G. Zalamea ,  Hans Kramer

IPC: B29C44/12 ,  B29C44/14 ,  B29C44/34 ,  B29C44/18 ,  B29D22/00 ,  B29L31/00 ,  B29K75/00

CPC classification number: B29C44/1214 ,  B29C44/14 ,  B29C44/18 ,  B29C44/3403 ,  B29C44/355 ,  B29D22/003 ,  B29K2075/00 ,  B29K2995/0015 ,  B29L2031/712 ,  B29L2031/7622

Abstract: A method of reducing the number or size of voids in a polyurethane comprises reacting the formulation components in a container having an inner surface, or having a liner that has an inner surface, that has been modified to reduce the shear forces that normally accompany introduction of such components into a container. This is done by modifying the inner container's or container liner's surface by profiling and/or engraving it, or by including as a liner a mesh. The profiling and/or engraving or mesh serves to alter the formulation's flow dynamics such that the polyurethane has fewer and/or smaller voids, i.e., has a more uniform density, than polyurethanes formed without the modification.

公开(公告)号：US20160207231A1

公开(公告)日：2016-07-21

申请号：US15041105

申请日：2016-02-11

Applicant: Dow Global Technologies LLC

Inventor： Miguel A. Prieto Goubert ,  Adrian J. Birch ,  Luis G. Zalamea ,  Hans Kramer

IPC: B29C44/12 ,  B29C44/18

CPC classification number: B29C44/1214 ,  B29C44/14 ,  B29C44/18 ,  B29C44/3403 ,  B29C44/355 ,  B29D22/003 ,  B29K2075/00 ,  B29K2995/0015 ,  B29L2031/712 ,  B29L2031/7622

Abstract: A method of reducing the number or size of voids in a polyurethane comprises reacting the formulation components in a container having an inner surface, or having a liner that has an inner surface, that has been modified to reduce the shear forces that normally accompany introduction of such components into a container. This is done by modifying the inner container's or container liner's surface by profiling and/or engraving it, or by including as a liner a mesh. The profiling and/or engraving or mesh serves to alter the formulation's flow dynamics such that the polyurethane has fewer and/or smaller voids, i.e., has a more uniform density, than polyurethanes formed without the modification.