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# c12) United States Patent Fourberg et al. 

# (54) LOW-EMISSION COLD-SETTING BINDER FOR THE FOUNDRY INDUSTRY 

(75) Inventors: Christian Fourberg, Miinchengladbach (DE); Gerard Ladegourdie, Dusseldorf (DE); Norbert Benz, Miinchengladbach (DE); Eckard Piech, Bergfeld (DE) 

(73) Assignee: HUTTENES-ALBERTUS CHEMISCHE WERKE GMBH, Dusseldorf (DE) 

( *) Notice: Subject to any disclaimer, the term ofthis patent is extended or adjusted under 35 U.S.C. 154(b) by 387 days. 

(21) Appl. No.: 13/984,481 

(22) PCT Filed: Dec. 16, 2011 

(86) PCT No.: PCT/EP2011/073023 § 371 (c)(l), (2), ( 4) Date: Oct. 11, 2013 

(87) PCT Pub. No.: WO2012/080454 PCT Pub. Date: Jun. 21, 2012 

## (65) Prior Publication Data 

US 2014/0048740 Al Feb. 20, 2014 

## (30) Foreign Application Priority Data 

Dec. 16, 2010 (DE) ........................ 10 2010 063 256 

(51) Int. Cl. 

B22C 1122 (2006.01) 

(52) U.S. Cl. CPC .................................... B22C 11224 (2013.01) 

( 58) Field of Classification Search CPC ...................................................... B22C 1/224 

See application file for complete search history. 

## (56) References Cited 

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## U.S. PATENT DOCUMENTS 

## FOREIGN PATENT DOCUMENTS 

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# (IO) Patent No.: US 9,993,863 B2 

# Jun.12,2018 (45) Date of Patent: 

Delivery note n. Bl 1287 of the Giocaset resin supply, issued on Jun. 9, 2010 by Cavenaghi to carry the Giocaset resin to F onderian Boccacci s.p.a., via XXV Apr. 9, 19020 Piana Batolla (SP)-Italy. Invoice N. 1302 of Jun. 11, 2010 for the Giocaset resin supply, issue by Cavenaghi to Fonderia Boccacci s.p.a., wherein the delivery note. Bl 1287 is referrred to in the filed "Description of goods." Delivery note n. Bl 1644 of the Giocaset resin supply, issued on Jul. 22, 2010 by Cavenaghi to carry the Giocaset resin to Fonderia Boccacci s.p.a. 

Invoice N. 1695 of Jul. 23, 2010 for the Giocaset resin supply, issued by Cavenaghi to Fonderia Boccacci s.p.a., wherein the delivery note n. Bl 1644 is referred to in the filed "Description of goods." 

Certificate of Analysis n. 513-C relating to the resin KH-Y. 

Certificate of Analysis n. 511-C relating to the above-mentioned Giocaset NB 2500 resin. 

Third party observation correspondence from Dragotti & Associati to the European Patent Office, dated Dec. 11, 2014. 

European Standard, Phenolic, amino and condensation resins› Determination of free-formaldehyde content (ISO 11402:2004), EN ISO 11402, Feb. 2005, 22 pages. 

Authorization Letter, "Authorization for reproducing the UNI EN ISO 11402: 2005 standard", Italian National Unification Associa› tion, Dated Aug. 4, 2017, 2 pages. 

Gardziella et al., Phenolic Resins, Chemistry, Applications, Stan› dardization, Safety and Ecology, 2nd completely revised edition, 7 Chemical, Physical and Application Technology Parameters of Phenolic Resins, 2000, 3 pages. 

ECHA, European Chemicals Agency, Substance Information, Hydroxylammonium Chloride, retrieved from the internet on Feb. 8, 2017, 2 pages. 

Cavenaghi, "GIOCASET NB 2500 Resin, formaldehyde content analysis", 22 and Aug. 23, 2017, 2 pages. 

Decreto Legislativo, English Translation Exceprt From p. 55. www. gazzettaufficiale.it/atto/stampa/serie_generale/ originario, Aug. 23, 2017, p. 55 of 139, 2 pages. 

Cavenaghi, "Naming and coding of raw material, packagings and finished products", Operating Instruction O.I. Aug. 1, 2002. Review 4 of the Dec. 6, 2009, 2 pages. 

Cavenaghi, Form, "Naming and coding of new products/raw mate› rials", CodiProd.doc-review 3 of the Jan. 30, 2009, 2 pages. 

Cavenaghi, Form, "Product Links (for product coding)", legami. doc-review of the Apr. 16, 2010, 2 pages. 

* cited by examiner 

Primary Examiner - Amina S Khan 

(74) Attorney, Agent, or Firm - Duane Morris LLP; Gregory M. Lefkowitz; Jason M. Nolan 

## (57) ABSTRACT 

The present invention relates primarily to a mixture that is suitable for use in the no-bake process for producing cores and molds for the foundry industry, and a reaction mixture comprising said mixture and an acid hardener (i.e. an acid catalyst). The present invention further relates to a method of producing a mixture according to the invention and a method of producing a mold or a core. The invention also relates to a mold or a core for producing metal objects and a kit comprising a mixture according to the invention and certain acid hardeners. The invention further relates to the use of a mixture according to the invention as cold-setting binder and the use of said mixtures or reaction mixtures in a no-bake process for producing metal objects. 

US009993 863B2 

## OTHER PUBLICATIONS 

## 28 Claims, No Drawings 

