http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2529733-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c2c656781bbe12aea668916f29ebd18d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B24D3-285 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G8-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09G1-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G8-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B24D3-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09G1-02 |
| filingDate | 2011-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9dafbb48bcc74db6b19436a87861b96d |
| publicationDate | 2015-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2529733-T3 |
| titleOfInvention | Low formaldehyde free resins for abrasive products |
| abstract | A process for the manufacture of an aqueous resin composition comprising a phenolic formaldehyde resin (PF), which comprises the steps of a. provide a phenolic and formaldehyde compound, b. reaction of said compounds in a condensation reaction in the presence of a catalyst, c. After completing the condensation reaction, reaction with free formaldehyde, determining the free formaldehyde content of the resin composition, d. adding an essentially stoichiometric pre-calculated amount of the modifying compound, the modifying compound comprising at least one compound of the formula: R-NH2 in which R is selected from the group consisting of: -OH (hydroxy), - (C> = O) -R1 (amides), R1- (C> = O) -NH- (hydrazides), -CH2-CH2-SO3H (taurines), -N (R2) R3 (hydrazines), -CH2 (COOH), -CH ( COOH) (CH2OH), -CH (COOH) (CH2SH), -CH (COOH) (CH3), -CH (COOH) (CH2CH2CONH2) (amino acids), and salts thereof, in which R1, R2 and R3 they are independently selected from the group consisting of substituted or unsubstituted alkyl, aryl, or H; or wherein the modifying compound comprises one or more amino acids, preferably isoleucine, glutamine, alanine, valine, lysine, arginine, histidine, methionine, threonine, glycine, serine, cysteine, and salts thereof; or wherein the modifying compound is selected from the group of primary amines comprising a secondary amine, hydrazines, taurine, aminosulfuric acid or a hydrazide and salts thereof, to reduce the amount of free formaldehyde in the resin composition to less than 0, 1% by weight (relative to the total weight of the aqueous resin composition), and e. optional distillation of the reaction product. |
| priorityDate | 2010-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 77.