Stefan Greulich

US Patent:

20030134984, Jul 17, 2003

Filed:

Jan 15, 2002

Appl. No.:

10/047370

Inventors:

Stefan Greulich - Wilmington DE, US
Karl-Wilhelm Kirberg - Neu-Anspach, DE
Norbert Eickhoff - Bremen, DE
Olaf Stelzer - Schwerin, DE

International Classification:

C08F002/00

US Classification:

525/242000

Abstract:

A compound for a composite body having a hard and a soft component, and to a process for producing such a composite body is provided. The compound comprises a hard component (a) of a polyoxymethylene and a soft component (b) of one or more hydrogenated styrene block copolymers, molded directly onto component (a). The styrene block copolymers are from the group of poly-isoprene/butadiene polymer (SEEPS), poly-isoprene polymer (SEPS); poly-butadiene polymer (SEBS), and combinations thereof. The styrene block copolymer is adhesion-modified by the addition of a compound selected from styrene/butadiene copolymer (SBS); ethylene/vinyl acetate copolymer (EVA); olefinic polymers, polystyrene (PS), and combinations thereof. One or more of the following substances may also be added as modifiers of the polyoxymethylene: SBS; EVA; hydrogenated styrene block copolymer based on a hydrogenated poly-isoprene/butadiene rubber (SEEPS), hydrogenated styrene block copolymer based on a hydrogenated poly-isoprene rubber (SEPS), hydrogenated styrene block copolymer based on a hydrogenated poly-butadiene rubber (SEBS), compounds based on a hydrogenated styrene block copolymer which can be present as hydrogenated poly-isoprene/butadiene rubber (SEEPS) or as hydrogenated poly-isoprene rubber (SEPS) or as hydrogenated poly-butadiene rubber (SEBS), olefinic polymers; polystyrene; acrylonitrile butadiene styrene (ABS); polycarbonate (PC); styrene acrylonitrile (SAN); and urethane thermoplastic elastomer (TPE-U).

US Patent:

20040118509, Jun 24, 2004

Filed:

Nov 26, 2003

Appl. No.:

10/723655

Inventors:

Edmund Flexman - Wilmington DE, US
Stefan Greulich - Wilmington DE, US
Kimberly Richmann - St. Louis MO, US

International Classification:

B28B003/20

US Classification:

156/242000, 264/176100, 264/328100

Abstract:

This invention relates a method for forming a polyacetal blend substrate having at least one discontinuous or co-continuous layer adhered thereon, wherein the method utilizes concentrates to deliver the polymers that provide enhanced surface adhesion.

US Patent:

20040121175, Jun 24, 2004

Filed:

Nov 26, 2003

Appl. No.:

10/723653

Inventors:

Edmund Flexman - Wilmington DE, US
Stefan Greulich - Wilmington DE, US
Kimberly Richmann - St. Louis MO, US
Pascal Scaramuzzino - Luasanne, CH

International Classification:

B32B027/00

US Classification:

428/515000, 428/522000

Abstract:

The present invention relates to layered articles comprising (a) a substrate comprising 99.5-40 weight percent of an polyoxymethylene polymer; and 0.5-60 weight percent of at least one non-acetal thermoplastic polymer; and (b) at least one additional layer deposited thereon.

US Patent:

20050003721, Jan 6, 2005

Filed:

May 24, 2004

Appl. No.:

10/852278

Inventors:

Stefan Greulich - Wilmington DE, US
Jerome Moraczewski - Kennett Square PA, US

International Classification:

B32B027/12
B32B031/20

US Classification:

442067000, 156308200

Abstract:

Differing thermoplastics may be joined by melt bonding a thermoplastic to one side of a resin sheet having irregular surfaces and melt bonding a different thermoplastic to the other side of the sheet. The bonds obtained are often very strong, resulting in cohesive failure of one of the thermoplastics when one attempts to pull apart the thermoplastics.