公开(公告)号：US09815974B2

公开(公告)日：2017-11-14

申请号：US15000120

申请日：2016-01-19

Applicant: LEHIGH TECHNOLOGIES, INC.

Inventor： Chad Aaron Jasiunas ,  Frank P. Papp ,  Charles T. Rosenmayer ,  Kedar D. Murthy

IPC: C08G63/00 ,  C08L9/06 ,  B60C1/00 ,  B29B17/02 ,  B29B17/04 ,  C08J11/04 ,  C08J11/06 ,  C08L21/00 ,  B60C9/02 ,  B60C13/00 ,  B60C15/00 ,  B65G15/32 ,  C08L7/00 ,  C08G63/02 ,  B29K9/06

CPC classification number: C08L9/06 ,  B29B17/02 ,  B29B17/0404 ,  B29K2009/06 ,  B60C1/0016 ,  B60C9/02 ,  B60C13/00 ,  B60C15/00 ,  B65G15/32 ,  C08J11/04 ,  C08J11/06 ,  C08J2321/00 ,  C08J2419/00 ,  C08L7/00 ,  C08L21/00 ,  Y02P20/143 ,  Y02W30/625 ,  Y02W30/70 ,  Y02W30/701 ,  C08L19/003 ,  C08L9/00

Abstract: This invention is based upon the discovery that micronized solution styrene-butadiene rubber from postconsumer sources can be included in rubber formulations without severely compromising abrasion resistance. The micronized solution styrene-butadiene rubber utilized in the rubber formulations of this invention can be made by cryogenic grinding postconsumer rubber products using conventional procedures. For instance, it can be made by cryogenically grinding a tire tread containing a high level of solution styrene-butadiene rubber. The micronized solution styrene-butadiene rubber can then be blending into desired virgin rubbers and cured without significantly compromising the abrasion resistance of the rubber formulation. The rubber formulation of this invention is comprised of a natural or synthetic rubber and from 1 weight percent to 30 weight percent of a micronized rubber composition containing at least 10 weight percent solution styrene-butadiene rubber and having a particle size of 40 mesh to 200 mesh.

公开(公告)号：US10227421B2

公开(公告)日：2019-03-12

申请号：US15399125

申请日：2017-01-05

Applicant: Lehigh Technologies, Inc.

Inventor： Chad Aaron Jasiunas ,  Frank P. Papp ,  Charles T. Rosenmayer ,  Adel Farhan Halasa

IPC: C08C19/22 ,  C08K5/43 ,  C08K5/31 ,  C08L9/06 ,  B60C1/00 ,  C08C19/08 ,  C08J11/28 ,  C08L19/00 ,  C08K3/04 ,  C08K5/09 ,  C08K5/40 ,  C08K5/435 ,  C08L9/00 ,  C08L17/00 ,  C08L91/00 ,  B60C9/00 ,  C08K3/22

Abstract: The renewed rubber of this invention can be used in rubber formulations that are used in manufacturing a wide array of rubber products, including tires, power transmission belts, conveyor belts, hoses, and a wide array of other products. The present invention more specifically discloses a method for manufacturing an environmentally friendly, chemically functionalized, renewed rubber composition having a highly desirable combination of physical properties and which exhibits excellent processability comprising the steps of (1) blending a micronized rubber powder with a processing aid and a chemical functionalizing agent to produce a blended mixture; (2) processing the blended mixture under conditions of high shear and low temperature to produce a reacted mixture; (3) adding a stabilizer to the reacted mixture to produce the chemically functionalized renewed rubber composition.

公开(公告)号：US09598564B2

公开(公告)日：2017-03-21

申请号：US15013702

申请日：2016-02-02

Applicant: LEHIGH TECHNOLOGIES, INC.

Inventor： Chad Aaron Jasiunas ,  Frank P. Papp ,  Charles T. Rosenmayer ,  Adel Farhan Halasa ,  Glenn Denstaedt

IPC: C08L17/00 ,  C08L9/00 ,  C08L9/06 ,  B60C11/00 ,  B60C13/00 ,  B60C9/02 ,  B60C15/00 ,  B60C1/00 ,  C08C19/08 ,  C08C19/22 ,  C08J11/28 ,  C08K5/31 ,  C08K5/43 ,  C08L19/00

CPC classification number: C08L9/06 ,  B60C1/00 ,  B60C1/0016 ,  B60C9/02 ,  B60C11/0008 ,  B60C13/00 ,  B60C15/00 ,  C08C19/08 ,  C08C19/22 ,  C08J11/28 ,  C08J2319/00 ,  C08J2321/00 ,  C08K3/04 ,  C08K5/09 ,  C08K5/31 ,  C08K5/40 ,  C08K5/43 ,  C08K5/435 ,  C08K2003/2296 ,  C08L9/00 ,  C08L17/00 ,  C08L19/003 ,  C08L91/00 ,  C08L2201/08 ,  C08L2205/02 ,  C08L2205/03 ,  C08L2205/06 ,  C08L2207/24

Abstract: This invention relates to certain rubber formulations which exhibit a low level of hysteresis which are comprised of a chemically functionalized renewed rubber and virgin solution styrene-butadiene rubber. These rubber formulations are loaded with a reinforcing silica. The rubber formulations of this invention can be utilized in making rubber products such as, tires, tracks, and conveyor belts which will promote energy savings by virtue of their low hysteretic properties. The present invention more specifically discloses a rubber composition which is comprised of (1) a solution styrene-butadiene rubber; (2) a functionalized renewed rubber composition which is comprised of an elastomeric polymer and a stabilizer; wherein the rubber composition has a crosslink density which is within the range of 0.05 to 2.0×10−5 mole/g, and wherein the rubber composition has a solubility fraction of less than 90 percent; and (3) a reinforcing filler including reinforcing silica.