Patent US4421886A successfully refreshed from Google Patents.
US4421886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizer-lubricant combination of lead compounds and partial esters of pentaerythritol and/or trimethylolpropane with fatty acids for molding compositions based on polyvinyl chloride
Assignee: Neynaber Chemie GmbH
•
Filing: 1981-06-03
•
Granted: 1983-12-20
•
Expires: 2001-06-03
Abstract
Abstract A stabilizer-lubricant composition for molding materials based on polyvinyl chloride and/or mixed polymers containing mainly vinyl chloride comprising (a) a partial ester of pentaerythritol and/or trimethylolpropane with a fatty acid of 8 to 22 carbon atoms, and (b) a polybasic lead compound.
Inventors
- 👤 Kurt Worschech
- 👤 Peter Wedl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:36
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/10; C08K3/11; C08K5/00; C08K5/04; C08K5/09; C08K5/10; C08K5/101; C08K5/103
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
A moldable composition consisting essentially of from 90 to 99.5% by weight of a thermoplastic resin selected from the group consisting of polyvinyl chloride, a mixed polymer containing mainly vinyl chloride, and any mixture thereof, and from 0.5 to 10% by weight of a stabilizer-lubricant composition consisting essentially of: (a) a stearic acid ester of pentaerythritol which has an OH number between 120 and 600 and an acid number below 15, and (b) a tribasic lead compound, wherein 15 to 1500 parts by weight of tribasic lead compound are present for each 100 parts by weight of said stearic acid ester of pentaerythritol.
Claim 2
Dependent Claim
103 words
A moldable composition consisting essentially of from 90 to 99.5% by weight of a thermoplastic resin selected from the group consisting of polyvinyl chloride, a mixed polymer containing mainly vinyl chloride, and any mixture thereof, and from 0.5 to 10% by weight of a stabilizer-lubricant composition consisting essentially of: (a) a stearic acid ester of pentaerythritol which has an OH number between 120 and 600 and an acid number below 15, and (b) a tribasic lead compound, wherein 15 to 1500 parts by weight of tribasic lead compound are present for each 100 parts by weight of said stearic acid ester of pentaerythritol.
Claim 3
Dependent Claim
60 words
The moldable composition of claim 1, wherein the stabilizer-lubricant composition additionally comprises from 0 to 50% by weight of other auxiliary process additives selected from the group consisting of fatty acids having about 12 to 22 carbon atoms, paraffins, low molecular-weight polyethylene, and natural or synthetic waxes, based on the total weight of the stabilizer-lubricant plus other auxiliary process additives.
Claim 4
Dependent Claim
17 words
The moldable composition of claim 1 which additionally contains plasticizers, pigments, dyes, fillers, or any mixture thereof.
Claim 5
Dependent Claim
13 words
The moldable composition of claim 1, wherein the thermoplastic resin is polyvinyl chloride.
Claim 6
Independent Claim
88 words
A method of stabilizing molding compositions based on polyvinyl chloride and/or mixed polymers containing mainly vinyl chloride, which comprises adding to said molding compositions a stabilizing amount of a stabilizer-lubricant composition consisting essentially of: (a) a stearic acid ester of pentaerythritol which has an OH number between 120 and 600 and an acid number below 15, and (b) a tribasic lead compound, wherein 15 to 1500 parts by weight of tribasic lead compound are present for each 100 parts by weight of said stearic acid ester of pentaerythritol.
Claim 7
Independent Claim
88 words
A method of stabilizing molding compositions based on polyvinyl chloride and/or mixed polymers containing mainly vinyl chloride, which comprises adding to said molding compositions a stabilizing amount of a stabilizer-lubricant composition consisting essentially of: (a) a stearic acid ester of pentaerythritol which has an OH number between 120 and 600 and an acid number below 15, and (b) a tribasic lead compound, wherein 15 to 1500 parts by weight of tribasic lead compound are present for each 100 parts by weight of said stearic acid ester of pentaerythritol.
References Cited (Backward Citations)
US3542713A
Cited
US3824202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |