NEW TYPE OF ROAD MARKINGS FOR SUPPORTING THE ENVIRONMENT DETECTION OF VEHICLES

• US 20150247297A1
• Filed: 11/06/2013
• Published: 09/03/2015
• Est. Priority Date: 11/28/2012
• Status: Active Grant

• Current Assignee: ROHM Co., Ltd.
• Original Assignee: Evonik Industries AG (Rag-Stiftung)
• Inventors: Protzmann, Guido, Schmitt, Guenter, Kaufmann, Marita, Kiwitt, Joern, Kiefer, Dominik, Olapoju, Michael
• Granted Patent: US 9,701,846 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C09D 5/004 Reflecting paints; Signal paints
• CPC Class Codes: E01C 11/00 Details of pavings E01C1/005, E01C5/003, E01C5/005, E01C7/145, E01C7/185, E01C7/325 take precedence
• CPC Class Codes: E01C 7/356 with exclusively synthetic resin as a binder; Aggregate, fillers or other additives for application on or in the surface of toppings having exclusively synthetic resin as binder
• CPC Class Codes: E01C 9/001 Paving elements formed in situ; Permanent shutterings therefor removable shutterings E01C19/502; moulding machines therefor E01C19/508; Inlays or reinforcements which divide the cast material in a great number of individual units reinforcement girders which do not break the cohesion of the covering material E01C11/16, E01C11/185
• CPC Class Codes: E01F 9/30 Arrangements interacting with transmitters or receivers otherwise than by visible means, e.g. using radar reflectors or radio transmitters E01F11/00 takes precedence
• CPC Class Codes: E01F 9/506 characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces
• CPC Class Codes: E01F 9/518 formed in situ, e.g. by painting, by casting into the road surface or by deforming the road surface
• CPC Class Codes: E01F 9/524 Reflecting elements specially adapted for incorporation in or application to road surface markings
• CPC Class Codes: Y10T 428/12014 having metal particles
• CPC Class Codes: Y10T 428/12028 Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
• CPC Class Codes: Y10T 428/2993 Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
• CPC Class Codes: Y10T 428/2998 including synthetic resin or polymer

Abstract

The present invention encompasses an innovative concept for the marking of trafficways, more particularly roads. The application qualities and lifetime of these new markings are comparable with those of the prior art. The markings also possess properties comparable with those of the prior art in respect of night visibility, back-in-service time, and surface quality. An additional contribution of the markings of the present invention, however, is that they can be used to support modern driver assistance systems and autonomous driving. With this in mind, the present invention relates more particularly to road markings which, building on established systems, are equipped with additional reflection capacity for electromagnetic radiation, more particular for microwaves and/or infrared radiation.

Claims

1. A radiation-reflecting road marking, comprising:

metal particles having a diameter of between 10 μ

m and 1 cm,

wherein the metal particles are particles comprising aluminum, magnesium, zinc or an alloy thereof.

2. The radiation-reflecting road marking according to claim 1,

wherein the metal particles consist of a metal comprising aluminum, magnesium, zinc or an alloy thereof,

surfaces of the metal particles are coated with the metal, or

the metal particles are coated with glass, poly(methyl methacrylate) or polycarbonate.

3. The radiation-reflecting road marking according to claim 1,

wherein the metal particles are spherical, oval, rounded or of triple mirror format or are in the form of flakes.

4. The radiation-reflecting road marking according to claim 1, wherein the metal particles are provided on a surface of the radiation-reflecting road marking with an adhesion promoter and/or

a matrix material of the radiation-reflecting road marking comprises an adhesion promoter.

6. The radiation-reflecting road marking according claim 4,

wherein the adhesion promoter is at least one adhesion promoter selected from the group consisting of a silane, a hydroxyester, an aminoester, an urethane, an isocyanate and an acid copolymerized with a (meth)acrylate.

7. The radiation-reflecting road marking according to claim 1,

wherein the radiation-reflecting road marking is a prefabricated adhesive tape.

8. The radiation-reflecting road marking according to claim 1,

wherein the radiation-reflecting road marking is a water-based paint.

9. The radiation-reflecting road marking according claim 1,

wherein the radiation-reflecting road marking is a cold plastic.

10. The radiation-reflecting road marking according to claim 1, further comprising:

glass beads on a surface of the radiation-reflecting road marking.

11. The radiation-reflecting road marking according to claim 1,

wherein the metal particles are situated on a surface of the radiation-reflecting road marking.

12. The radiation-reflecting road marking according to claim 1,

wherein the metal particles have a diameter of between 0.5 mm and 2.5 mm.

13. The radiation-reflecting road marking according to claim 9,

wherein the cold plastic is produced from a two-part reactive resin in which a first component comprises 1.0 to 5.0 wt % of an initiator, and a second component comprises 0.5 to 5.0 wt % of an accelerator, and in that the two-part reactive resin comprises:

0.1 wt % to 18 wt % of a crosslinker,

2 wt % to 50 wt % of a monomer,

0 wt % to 12 wt % of an urethane (meth)acrylate,

0.5 wt % to 30 wt % of a prepolymer,

0 wt % to 15 wt % of core-shell particles,

7 wt % to 15 wt % of an inorganic pigment,

30 wt % to 60 wt % of mineral fillers, and

optionally an additional auxiliary.

14. The radiation-reflecting road marking according to claim 1,

wherein the radiation-reflecting road marking reflects microwaves and/or infrared radiation.

15. A method for producing the radiation-reflecting road marking according to claim 9, the method comprising:

where necessary, mixing components of two-part system, thereby forming a mixture,

applying the mixture to a road surface and

adding the metal particles and optionally glass beads during or directly after an application of the cold plastic to the road surface.

16. The radiation-reflecting road marking according to claim 13, wherein the initiator is dilauroyl peroxide, dibenzoyl peroxide or both.

17. The radiation-reflecting road marking according to claim 13, wherein the accelerator is a tertiary, aromatically substituted amine.

18. The radiation-reflecting road marking according to claim 13, wherein the inorganic pigment is titanium oxide.

5. (canceled)