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    Curable composition comprising UV stabilizer
    261.
    发明授权
    Curable composition comprising UV stabilizer 有权

    公开(公告)号：US11370897B2

    公开(公告)日：2022-06-28

    申请号：US16577493

    申请日：2019-09-20

    Applicant: Momentive Performance Materials Inc.

    Inventor： Paul Furuta ,  Andreas Haeuseler ,  Gunnar Hoffmüller

    IPC: C08K5/07 ,  C08K3/36 ,  C08K5/00 ,  C08L75/14

    Abstract: The present invention relates to curable compositions comprising at least one compound of the formula (1): wherein R is C1-C10 alkyl, and R1-R10 each are independently selected from the group consisting of hydrogen and C1-C10 alkyl, with the proviso that at least one of R1-R10 is alkyl, and wherein the substitution patterns formed by the residues R1-R5 and R6-R10 on each of the aromatic rings are different from each other, cured compositions obtained from such curable compositions, mixtures of compounds of the formula (I), the use of such compounds and mixtures of such compounds as a UV stabilizer in curable compositions, and a process for the manufacture of curable compositions comprising a UV stabilizer of the formula (1).

    Silicone polymer
    265.
    发明授权
    Silicone polymer 有权

    公开(公告)号：US11319414B2

    公开(公告)日：2022-05-03

    申请号：US15928485

    申请日：2018-03-22

    Applicant: Momentive Performance Materials Inc.

    Inventor： Vinu Krishnan Appukuttan ,  Pranabesh Dutta ,  Sandeep Naik ,  Anubhav Saxena

    IPC: C08G77/38 ,  C08G77/392 ,  C09K5/14 ,  A61K8/899 ,  A61K8/891 ,  A61Q19/00 ,  C08G77/00

    Abstract: Provided is a silicone polymer of the Formula (I): M1aM2bM3cD1dD2eD3fT1gT2hT3iQj. wherein: M1=R1R2R3SiO1/2 M2=R4R5R6SiO1/2 M3=R7R8R9SiO1/2 D1=R10R11SiO2/2 D2=R12R13SiO2/2 D3=R14R15SiO2/2 T1=R16SiO3/2 T2=R17SiO3/2 T3=R18SiO3/2 Q=SiO4/2 where R1, R2, R3, R5, R6, R8, R9, R10, R11, R13, R15, R16 are independently chosen from a hydrogen, a C1-C60 aliphatic or aromatic group or C1-C60 alkoxy group; R4, R12, R17 are independently chosen from a C1-C60 alkyl, a C1-C60 alkoxy, or R19-A-R20— where A is chosen from a group comprising an unsaturated cyclic moiety chosen from an aromatic group, a fused aromatic group, an unsaturated alicyclic group, an unsaturated heterocyclic group, or a combination of two or more thereof; R19 is chosen from a —H, a C1-C60 alkyl, allyl, vinyl, alkoxy, allyloxy, vinyloxy, acrylate, or methacrylate; and R20 is chosen from a divalent organic group; R7, R14, R18 are independently selected from hydrogen or OR22 or unsaturated monovalent radicals or radicals containing heteroatom such as oxygen, nitrogen, sulfur or radicals containing organosilane groups; and the subscripts a, b, c, d, e, f, g, h, i, j are zero or positive subject to the following limitations: 2≤a+b+c+d+e+f+g+h+i+j≤1000, b+e+h>0 and c+f+i≥0.

    PREPARATION OF ISOCYANATOSILANES
    270.
    发明申请
    PREPARATION OF ISOCYANATOSILANES 有权

    公开(公告)号：US20210277035A1

    公开(公告)日：2021-09-09

    申请号：US17259268

    申请日：2019-07-02

    Applicant: MOMENTIVE PERFORMANCE MATERIALS INC.

    Inventor： Venkata Sunil JAGANI ,  Srinivas KOMATI ,  Vivek KHARE

    IPC: C07F7/18 ,  B01D3/32 ,  B01D3/14 ,  B01D3/00

    Abstract: There is provided herein a method and an apparatus for producing an isocyanatoorganosilane which method includes feeding a carbamatoorganosilane to a cracking device where it is thermally dissociated into a reaction product mixture comprising isocyanatoorganosilane, alcohol, and heavies, followed by separating the mixture in a distillation column of two parts and collecting the isocyanatoorganosilane from the distillation column via a side stream having a predetermined location between the top and bottom parts of the column; and wherein the distillation column is configured to have a ratio of the length of the bottom part of the distillation column to the length of the top part of the distillation column which is effective to provide a side stream having a high purity and high weight percent of isocyanatoorganosilane.

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