Patent US4987164A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4987164A Expired / Lapsed US ⏱️ 0.0 years remaining

Ultraviolet light stable polymeric compositions

Assignee: Tronox LLC
•
Filing: 1989-05-04
•
Granted: 1991-01-22
•
Expires: 2009-05-04
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Ultraviolet light stable polymeric resin compositions comprising an ultraviolet light degradable polymeric resin component and an effective ultraviolet light absorbing amount of a particulate metal titanate component.

Inventors

  • 👤 James W. Kauffman
  • 👤 Bruce R. Palmer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 04:50
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 180 words
The ultraviolet light stable polymeric resin compositions comprising: a poly(vinylchloride) resin as an ultraviolet light degradable polymeric resin component; and from about 0.1 to about 25 weight percent based on the weight of said polymeric resin of a particulate metal titanate component corresponding to the formula M a Ti c O d wherein M is a metal selected from Groups Ia, IIa, and IIIa of the Periodic Table of the Elements, a is a number ranging from about 1 to about 2, c is a number ranging from about 1 to about 2 and d is a number ranging from about 3 to about 5, wherein both M and Ti are present in said particulate titanate in their most stable oxidation state and O is in stoichiometric balance with M and Ti such that said particulate titanate possesses a zero charge and wherein said particulate titanate further is characterized as being comprised of particles ranges in size from about 0.01 to about 10 microns in diameter and capable of absorbing ultraviolet light of wavelenghths of about 400 nm and below.
Claim 2
Dependent Claim 180 words
The ultraviolet light stable polymeric resin compositions comprising: a poly(vinylchloride) resin as an ultraviolet light degradable polymeric resin component; and from about 0.1 to about 25 weight percent based on the weight of said polymeric resin of a particulate metal titanate component corresponding to the formula M a Ti c O d wherein M is a metal selected from Groups Ia, IIa, and IIIa of the Periodic Table of the Elements, a is a number ranging from about 1 to about 2, c is a number ranging from about 1 to about 2 and d is a number ranging from about 3 to about 5, wherein both M and Ti are present in said particulate titanate in their most stable oxidation state and O is in stoichiometric balance with M and Ti such that said particulate titanate possesses a zero charge and wherein said particulate titanate further is characterized as being comprised of particles ranges in size from about 0.01 to about 10 microns in diameter and capable of absorbing ultraviolet light of wavelenghths of about 400 nm and below.

References Cited (Backward Citations)

US2140236A Cited
US3852238A Cited
US3855356A Cited
US3830777A Cited
US4009043A Cited
US4296023A Cited
JPS58179253A Cited
US4619957A Cited
US4798863A Cited
JPS62129346A Cited
US4806586A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-01-21 1994-07-23 1995-01-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-01-21 1998-07-23 1999-01-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-01-21 2002-07-23 2003-01-22 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag