公开(公告)号：US10442935B2

公开(公告)日：2019-10-15

申请号：US15667463

申请日：2017-08-02

Applicant: HRL Laboratories, LLC

Inventor： Ashley M. Nelson ,  Andrew P. Nowak ,  April R. Rodriguez

IPC: C09D5/16 ,  C09D5/00 ,  C09D175/08 ,  C08G18/32 ,  C08G18/50 ,  C08G18/62 ,  C08G18/66 ,  C08G18/75 ,  C08G18/61 ,  C08G18/24 ,  C09D175/04 ,  C09D183/08 ,  C08G77/24

Abstract: This disclosure provides coatings that eliminate the problem of persistent oil or grease smudges deposited on transparent coatings. Some variations provide an oil-smudge-resistant material comprising discrete inclusions dispersed within a continuous matrix, wherein one of the discrete inclusions and the continuous matrix is an oleophobic material, and the other is an oleophilic material. Specific embodiments incorporate segmented polyurethanes with oleophobic fluoropolymers and oleophilic hydrocarbons. Some embodiments utilize inorganic oleophilic particles in an oleophobic matrix. Some embodiments condense urethane-silane crosslinkers with other silanes to form discrete domains of oleophobic or oleophilic silanes within a continuous matrix of oleophilic or oleophobic polymer. Waterborne coatings are provided in which one of the discrete inclusions and the continuous matrix is derived from an aqueous dispersion of a linear crosslinkable polyurethane containing charged groups, and the other is derived from a crosslinking agent containing charged groups.

公开(公告)号：US10240065B2

公开(公告)日：2019-03-26

申请号：US15391749

申请日：2016-12-27

Applicant: HRL Laboratories, LLC

Inventor： Andrew P. Nowak ,  Adam F. Gross ,  April R. Rodriguez ,  Shanying Cui

IPC: C08G18/00 ,  C09D175/08 ,  C08G18/10 ,  C08G18/24 ,  C08G18/75 ,  C08G18/50 ,  C08G18/48 ,  C08G18/08 ,  C08G18/34 ,  C09D7/61 ,  C08K3/08

Abstract: We have demonstrated reversibly reducing metal-ion crosslinkages in polymer systems, by harnessing light, creating a dynamic and reversible bond. The reduction induces chemical and physical changes in the polymer materials. Some variations provide a polymer composition comprising: a polymer matrix containing one or more ionic species; one or more photosensitizers; and one or more metal ions capable of reversibly changing from a first oxidation state to a second oxidation state when in the presence of the photosensitizers and light. Some embodiments employ urethane-based ionomers capable of changing their crosslinked state under the influence of a change in counterion valance, using light or chemical reducing agents. This invention provides films, coatings, or objects that are reversible, re-mendable, self-healing, mechanically adjustable, and/or thermoplastic/thermoset-switchable.