25.
    发明专利
    未知

    公开(公告)号:DE69431394T2

    公开(公告)日:2003-06-05

    申请号:DE69431394

    申请日:1994-12-21

    Applicant: IBM

    Abstract: A microwave processing system is provided wherein the material to be processed is in the form of a web type quantity configuration with a thickness that is small in relation to the wavelength of a particular microwave frequency. The material is passed through the field associated with a plurality of microwave standing waves of the particular frequency, each adjacent standing wave being offset 1/4 wavelength along the direction of movement of the web. A carrier gas removes volatile solvents from the material surfaces. Control is provided for the interrelationship of temperature, rate of movement, flow of carrier gas, and microwave power.

    27.
    发明专利
    未知

    公开(公告)号:DE69027374D1

    公开(公告)日:1996-07-18

    申请号:DE69027374

    申请日:1990-07-05

    Applicant: IBM

    Abstract: A process for the synthesis of derivatives of materials containing an imide group conjugated to an aromatic moiety to form an ester, a thioester, an amide, a ketone, and silylesters. Electrons are supplied to redox sites to form a reduced imide material. The reduced imide material is contacted with a nucleophile which opens the imide ring of the reduced imide and chemically combines with a carbonyl carbon atom of the open imide ring to form an imide derivative.

    28.
    发明专利
    未知

    公开(公告)号:DE69025236D1

    公开(公告)日:1996-03-21

    申请号:DE69025236

    申请日:1990-07-05

    Applicant: IBM

    Abstract: Derivatives of compounds containing a carbonyl group conjugated to an aromatic moiety and methods of fabrication thereof consisting of a thioether, an ester, an ether, a phosphate and a silylether. Electrons are supplied to the carbonyl group conjugated to an aromatic moiety to form a reduced material. The reduced material is contacted with an electrophile which attacks and chemically combines with the carbonyl group conjugated to an aromatic moiety. The parent material can be regenerated by hydrolysis of the derivative. A silyl derivative can be selectively formed on a polyimide material surface which can act as a barrier to an RIE etch of the polyimide material. After etch the polyimide material is regenerated from the silyl derivative.

    29.
    发明专利
    未知

    公开(公告)号:DE69114355D1

    公开(公告)日:1995-12-14

    申请号:DE69114355

    申请日:1991-02-27

    Applicant: IBM

    Abstract: The surface modification of polyimide materials by a chemical process is disclosed to provide a variety of functional groups on the surface. The surface is treated to produce polyamic acid carboxyl groups which are subsequently reacted with epoxies, hydrazines, or alcohols. The carboxyl groups can also be subjected to other organic reactions, such as reduction with metal hydrides and the like. The versatility and controllability of this process lends itself to promoting adhesion of the polyimide to similarly treated polyimides, other polymers and other substrates as well as combining with metals such as metal catalysts used for depositing conductors on non-conductive surfaces such as circuit boards.

Patent Agency Ranking