47.
    发明专利
    未知

    公开(公告)号:DE69008811T2

    公开(公告)日:1994-09-15

    申请号:DE69008811

    申请日:1990-09-04

    Applicant: DOW CORNING

    Inventor: REVIS ANTHONY

    Abstract: What is disclosed is a process of improving the transparency of cured abrasion resistant coating compositions when basic dispersions of colloidal silica are used. The process involves adding organic acid to either basic dispersions of colloidal silica prior to combining with a mixture containing a Michael adduct or to a mixture containing a Michael adduct prior to combining with basic dispersions of colloidal silica.

    48.
    发明专利
    未知

    公开(公告)号:DE3586332T2

    公开(公告)日:1993-02-25

    申请号:DE3586332

    申请日:1985-04-02

    Applicant: DOW CORNING

    Abstract: Porous materials having a dual surface are disclosed. Also disclosed is a method for their preparation. An example of such a material is a silica gel reacted with a reactive silane intermediate such as (CH 3 ) 2 Si=O and then, with a reactive silane such asto give a dual treated material having -(CH 3 ) 2 SiO) x H on the exterior surface andon the interior surface of the pores.

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