Global patent index - EP 1084182 A1

EP 1084182 A1 2001-03-21 - NUCLEATION OF POLYAMIDES IN THE PRESENCE OF HYPOPHOSPHITE

Title (en)

NUCLEATION OF POLYAMIDES IN THE PRESENCE OF HYPOPHOSPHITE

Title (de)

NUKLEIERUNG VON POLYAMIDEN IN GEGENWART VON HYPOPHOSPHIT

Title (fr)

NUCLEATION DE POLYAMIDES EN PRESENCE D'HYPOPHOSPHITE

Publication

EP 1084182 A1 (EN)

Application

EP 99925859 A

Priority

  • US 9911610 W
  • US 8723298 P

Abstract (en)

[origin: WO9961522A1] The present invention provides polyamide compositions comprising a polyamide, nylon 2,2, and a phosphorous-containing whitening agent having Formula (I), wherein R is hydrogen, an alkyl group with 1 to 6 carbons, a cycloalkyl group with 5 to 6 carbons, or a phenyl or methylphenyl aromatic group, and M is hydrogen or a metal. In a preferred embodiment, the polyamide is nylon 6,6 (polyhexamethylene adipamide) and the phosphorous-containing whitening agent is a hypophosphorous acid or a metal hypophosphite. Sodium hypophosphite is especially preferred. The polyamide compositions of the present invention have improved molding cycle times, and are tough, white and color-stable.

IPC 1-7 (main, further and additional classification)

C08K 3/32; C08K 5/51; C08L 77/00

IPC 8 full level (invention and additional information)

C08G 69/00 (2006.01); C08K 3/32 (2006.01); C08K 5/00 (2006.01); C08K 5/51 (2006.01); C08K 5/5313 (2006.01); C08L 77/00 (2006.01); C08L 77/06 (2006.01)

CPC (invention and additional information)

C08K 5/51 (2013.01); C08K 3/32 (2013.01); C08K 5/0008 (2013.01); C08K 5/5313 (2013.01); C08L 77/00 (2013.01); C08L 77/06 (2013.01)

Combination set (CPC)

  1. C08K 3/32 + C08L 77/00
  2. C08K 5/0008 + C08L 77/00
  3. C08K 5/51 + C08L 77/00
  4. C08L 77/00 + C08L 77/00
  5. C08L 77/06 + C08L 77/00

Citation (search report)

See references of WO 9961522A1

Designated contracting state (EPC)

DE ES FR GB IT NL

EPO simple patent family

WO 9961522 A1 19991202; AU 4206199 A 19991213; BR 9910798 A 20010213; CA 2333404 A1 19991202; CN 1311808 A 20010905; EP 1084182 A1 20010321; JP 2002516371 A 20020604; TW 546350 B 20030811

INPADOC legal status

2004-08-11 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040204

2003-01-08 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20021122

2002-10-23 [111Z] REGISTERING OF LICENCES OR OTHER RIGHTS

- Ref Legal Event Code: 111Z

- Free Format Text: 20020827 DE ES FR GB IT NL * 20020827 DE ES FR GB IT NL

2001-03-21 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001127

2001-03-21 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT NL