Polyacetals with improved resistance to bleach

Details Polyacetals with improved resistance to bleach Polyacetals with improved resistance to bleach

2007-05-29

2007-05-29

Szekely, Peter (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S414000, C524S424000, C524S432000, C524S321000, C524S377000

Reexamination Certificate

active

11139150

ABSTRACT:
A molding composition exhibiting bleach resistance includes a polyoxymethylene matrix polymer, from about 0.5 to about 10 weight percent of a bleach stabilizer selected from alkali metal or alkaline earth element carbonates or phosphates and mixtures thereof dispersed in the matrix resin. A bleach co-stabilizer is selected from the group consisting of: (a) a poly(alkoxy) stabilizer; (b) a zinc oxide stabilizer; (c) a color stabilizer consisting of a mixture of calcium citrate and calcium propionate, wherein the calcium citrate is the predominant component of the color stabilizer mixture; or (d) mixtures of two or more of (a), (b) and (c). The compositions exhibit a bleach resistance index of at least 2.0.

REFERENCES:
patent: 3699062 (1972-10-01), Starr et al.
patent: 4274986 (1981-06-01), Ikenaga et al.
patent: 4351916 (1982-09-01), Kohan
patent: 4418162 (1983-11-01), Kasuga et al.
patent: 4559380 (1985-12-01), Kasuga et al.
patent: 4596847 (1986-06-01), Kasuga et al.
patent: 4647609 (1987-03-01), O'Brien
patent: 4649179 (1987-03-01), Takagaki
patent: 4731396 (1988-03-01), Auerbach et al.
patent: 4780498 (1988-10-01), Goerrissen et al.
patent: 4831073 (1989-05-01), Okushiro et al.
patent: 4836899 (1989-06-01), Clemens
patent: 4837400 (1989-06-01), Walter et al.
patent: 4861814 (1989-08-01), Nakagawa et al.
patent: 4886851 (1989-12-01), Ikenaga et al.
patent: 4996253 (1991-02-01), Mulholland
patent: 5059644 (1991-10-01), Kosinski
patent: 5094713 (1992-03-01), Forschirm
patent: 5096951 (1992-03-01), Auerbach
patent: 5106896 (1992-04-01), Endo et al.
patent: 5118734 (1992-06-01), Katsumata
patent: 5173532 (1992-12-01), Endo et al.
patent: 5212222 (1993-05-01), Mitsuuchi et al.
patent: 5298537 (1994-03-01), Vaidya
patent: 5354798 (1994-10-01), Tsukahara et al.
patent: 5432216 (1995-07-01), Yu et al.
patent: 5478563 (1995-12-01), Erami
patent: 5478895 (1995-12-01), Sugiyama et al.
patent: 5482987 (1996-01-01), Forschirm
patent: 5519075 (1996-05-01), Matsumoto et al.
patent: 5641824 (1997-06-01), Forschirm
patent: 5744527 (1998-04-01), Katsumata et al.
patent: 5886066 (1999-03-01), Forschirm
patent: 5939481 (1999-08-01), Sugiyama et al.
patent: 5948844 (1999-09-01), Oka et al.
patent: 6156834 (2000-12-01), Seyama et al.
patent: 6284828 (2001-09-01), Takayama
patent: 0 247 765 (1987-12-01), None
patent: 0 580 872 (1994-02-01), None
patent: 0 884 364 (1998-12-01), None
patent: 07228751 (1995-08-01), None
Derwent abstract ACC-NO: 1995-332651 (JP 7-228751-A); and “Celcon Acetal Copolymer Short Term Properties Brochure”, Celanese (Ticona, a business of Celanese AG), © 2001, Ticona). (00-304/5M/0301).

Affiliated with

Also associated with

Rating

Polyacetals with improved resistance to bleach does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyacetals with improved resistance to bleach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyacetals with improved resistance to bleach will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3761852