中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

28 records (took 0.012 seconds)

    Partially crosslinked siloxane-polyoxyalkylene ({57 sioc{57 ) block copolymer compositions and use thereof as surfactants in the production of polyurethane foams
    4.
    发明授权
    Partially crosslinked siloxane-polyoxyalkylene ({57 sioc{57 ) block copolymer compositions and use thereof as surfactants in the production of polyurethane foams 失效
    部分交联的硅氧烷聚乙烯（{57 SIOC {57）嵌段共聚物组合物及其作为表面活性剂在生产聚氨酯泡沫塑料中的用途

    公开(公告)号：US3867420A

    公开(公告)日：1975-02-18

    申请号：US8217170

    申请日：1970-10-19

    Applicant: UNION CARBIDE CORP

    Inventor： MOREHOUSE EDWARD L ,  PROKAI BELA

    IPC: C08G77/46 ,  C08J9/00 ,  C08J9/30 ,  C07F7/18

    CPC classification number: C08J9/0061 ,  C08G77/46 ,  C08J9/30 ,  C08J2483/00

    Abstract: Partially crosslinked siloxane-polyoxyalkylene block copolymer compositions having siloxane blocks linked to polyoxyalkylene blocks by silicon to oxygen to carbon (*SiOC*) linkages, the carbon of each said linkage being bonded only to the oxygen of said linkage, hydrogen and carbon. The siloxane blocks are comprised of siloxane units each having one to three monovalent hydrocarbon groups bonded to the silicon thereof and have an average of at least two valences of silicon per siloxane block combined in said linkages. A portion of the polyoxyalkylene blocks comprise oxyalkylene units and are crosslinking blocks having at least two valences of carbon per polyoxyalkylene block combined in said linkages joining separate siloxane blocks. The total of valences of silicon, combined in said linkages, of an average siloxane block plus the valences of carbon, combined in said linkages, of an average cross-linking polyoxyalkylene block is at least five. A portion of said polyoxyalkylene blocks are noncrosslinking or branching blocks having only one valence of carbon per block combined in said linkages, comprise oxyalkylene units and contain at least one of the groups of hydroxy, -OR, OOCNHR, and -OOCR groups in which R is monovalent hydrocarbon having 1 to 18 carbon atoms. The ratio of the number of polyoxyalkylene blocks to said siloxane blocks is 3:1 to 100:1 and the average number of silicon valences per average siloxane block combined with said polyoxyalkylene blocks times the weight percentage of said siloxane blocks in the composition is 20 to 150.

    Abstract translation: 部分交联的硅氧烷 - 聚氧化烯嵌段共聚物组合物，其具有通过硅与氧化碳（3BOND SiOC 3BOND）键连接的聚氧化烯嵌段的硅氧烷嵌段，每个所述键的碳仅与所述键，氧和碳的氧键合。 硅氧烷嵌段由硅氧烷单元组成，每个硅氧烷单元各自具有键合到其硅上的一至三个一价烃基，并且每个硅氧烷嵌段平均具有至少两个硅价态，所述硅氧烷嵌段在所述键合中组合。 聚氧化烯嵌段的一部分包含氧化烯单元，并且是在连接分开的硅氧烷嵌段的所述连接中结合的每个聚氧化烯嵌段具有至少两个碳原子数的交联嵌段。 在所述连接中，平均硅氧烷嵌段加上在所述连接中合并的平均交联聚氧化烯嵌段的碳的价数的总价合计为至少五。 所述聚氧化烯嵌段的一部分是非交联的或在所述连接中仅具有一个碳原子价数的支链嵌段，包含氧化烯单元，并且含有羟基，-OR，-OOCNHR和-OOCR基团中的至少一个基团，其中 R是具有1至18个碳原子的一价烃。 聚氧化烯嵌段的数量与所述硅氧烷嵌段的比例为3:1至100:1，并且每个平均硅氧烷嵌段与所述聚氧化烯嵌段的平均硅化合价乘以组合物中所述硅氧烷嵌段的重量百分数为20至 150。

    Siloxane-polyoxyalkylene block copolymers
    5.
    发明授权
    Siloxane-polyoxyalkylene block copolymers 失效
    硅氧烷 - 聚乙烯嵌段共聚物

    公开(公告)号：US3686254A

    公开(公告)日：1972-08-22

    申请号：US3686254D

    申请日：1969-12-24

    Applicant: UNION CARBIDE CORP

    Inventor： MOREHOUSE EDWARD L

    IPC: C08G18/38 ,  C08G18/50 ,  C08G77/46 ,  C08J9/00 ,  C07F

    CPC classification number: C08J9/0061 ,  C08G18/38 ,  C08G18/5075 ,  C08G77/46 ,  C08J2375/08 ,  C08J2483/00

    Abstract: THIS INVENTION RELATES TO THE USE OF MODIFIED SILOXANEPOLYOXYALKYLENE BLOCK COPOLYMER FOAM STABILIZERS IN THE PRODUCTION OF OPEN-CELL FLEXIBLE POLYETHER POLYURETHANE FOAM HAVING REDUCED FLAMMABILITY. THE BLOCK COPOLYMERS ARE MODIFIED WITH CERTAIN SILICON-BONDED ORGANIC GROUPS (E.G., C6H5CH2CH2- OR BICYLOHEPTYL GROUPS) WHICH INCREASE THE BULK SURFACE TENSION OF THE BLOCK COPOLYMERS. OPEN-CELL FLEXIBLE POLYETHER POLYURETHANE FOAMS ARE PRODUCED COMMERCIALLY FROM REACTION MIXTURES CONTAINING POLYURETHANE-FORMING REACTANTS, A CATALYST FOR THE REACTION OF THE POLYURETHANE-FORMING REACTANTS TO PRODUCE THE POLYURETHANE, A BLOWING AGENT AND A SILOXANEPOLYOXYALKYLENE BLOCK COPOLYMER FOAM STABILIZER. SUCH FOAMS ARE, TO SOME EXTENT, FLAMMABLE AND ARE USED IN APPLICATIONS (E.G., AUTOMOBILE SEAT CUSHIONS AND HOUSEHOLD FURNITURE CUSHIONS) WHERE FIRE CREATES A HAZARD. ACCORDINGLY, IT IS DESIRABLE TO REDUCE THE FLAMMABILITY OF SUCH FOAMS.

Patent Agency Ranking