Patents by Inventor Marek Cypryk

Marek Cypryk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Telomerisation of cyclic polyorganosiloxanes
    Patent number: 10047198
    Abstract: A telomerization process is used to prepare a reaction product containing a noncyclic hydrocarbonoxy-functional polyorganosiloxane. The process includes heating a composition including (A) a cyclic polyorganosiloxane, (B) a silane, and (C) a Lewis Acid telomerization catalyst. The cyclic polyorganosiloxane has formula [(R12SiO)2/2]n, where subscript n is an integer of 4 or more, and each R1 is independently H, a hydrocarbyl group, or a halogenated hydrocarbyl group. The silane has formula R2(4-m)Si(OR3)m, where subscript m is an integer from 1 to 4, each R2 is independently H, a hydrocarbyl group, or a halogenated hydrocarbyl group, and each R3 is independently a hydrocarbyl group.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: August 14, 2018
    Assignee: Dow Silicones Corporation
    Inventors: Avril Surgenor, Richard Taylor, Marek Cypryk
  • Telomerisation Of Cyclic Polyorganosiloxanes
    Publication number: 20160145395
    Abstract: A telomerisation process is used to prepare a reaction product containing a noncyclic hydrocarbonoxy-functional polyorganosiloxane. The process includes heating a composition including (A) a cyclic polyorganosiloxane, (B) a silane, and (C) a Lewis Acid telomerisation catalyst. The cyclic polyorganosiloxane has formula [(R12SiO)2/2]n, where subscript n is an integer of 4 or more, and each R1 is independently H, a hydrocarbyl group, or a halogenated hydrocarbyl group. The silane has formula R2(4-m)Si(OR3)m, where subscript m is an integer from 1 to 4, each R2 is independently H, a hydrocarbyl group, or a halogenated hydrocarbyl group, and each R3 is independently a hydrocarbyl group.
    Type: Application
    Filed: June 20, 2014
    Publication date: May 26, 2016
    Inventors: Avril Surgenor, Richard Taylor, Marek Cypryk