US4637887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants for vinyl chloride polymers
Assignee: Henkel AG and Co KGaA
•
Filing: 1985-05-30
•
Granted: 1987-01-20
•
Expires: 2005-05-30
Abstract
Abstract Triglycerides containing hydroxy fatty acid residues, of the type obtainable by hydrogenating epoxidized natural fats and oils, are used as lubricants for the molding of polyvinyl chloride or copolymers predominantly containing vinyl chloride, and are a replacement for hardened castor oil.
Inventors
- 👤 Kurt Worschech
- 👤 Frido Loeffelholz
- 👤 Peter Wedl
- 👤 Bernd Wegemund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:14
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; Y; Y10; Y10S; Y10S264/00; Y10S264/79
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
81 words
In the process of molding polyvinyl chloride or copolymers predominantly containing vinyl chloride wherein a molding lubricant is employed, the improvement comprising using a lubrication effective amount of a molding lubricant consisting essentially of triglycerides containing hydroxy fatty acid residues obtained by hydrogenating at least one epoxidized natural fat or oil selected from olive oil, linseed oil, sunflower oil, safflower oil, peanut oil, corn oil, palm oil, tall oil, lard oil, herring oil, whale oil, soybean oil, rapeseed oil, or tallow.
Claim 2
Dependent Claim
81 words
In the process of molding polyvinyl chloride or copolymers predominantly containing vinyl chloride wherein a molding lubricant is employed, the improvement comprising using a lubrication effective amount of a molding lubricant consisting essentially of triglycerides containing hydroxy fatty acid residues obtained by hydrogenating at least one epoxidized natural fat or oil selected from olive oil, linseed oil, sunflower oil, safflower oil, peanut oil, corn oil, palm oil, tall oil, lard oil, herring oil, whale oil, soybean oil, rapeseed oil, or tallow.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein said natural fat or oil is soybean oil, rapeseed oil, tallow, or any mixutre thereof.
Claim 4
Dependent Claim
31 words
The process of claim 1 wherein said triglycerides are used in a quantity of about 0.3 to 3.0 parts by weight per 100 parts by weight of said polymers or copolymers.
Claim 5
Dependent Claim
31 words
The process of claim 2 wherein said triglycerides are used in a quantity of about 0.3 to 3.0 parts by weight per 100 parts by weight of said polymers or copolymers.
Claim 6
Dependent Claim
31 words
The process of claim 1 wherein said triglycerides are used in a quantity of about 0.5 to 1.0 part by weight per 100 parts by weight of said polymers or copolymers.
Claim 7
Dependent Claim
31 words
The process of claim 2 wherein said triglycerides are used in a quantity of about 0.5 to 1.0 part by weight per 100 parts by weight of said polymes or copolymers.
Claim 8
Dependent Claim
88 words
A molding composition comprising polyvinyl chloride or copolymers predominantly containing vinyl chloride and about 0.3 to about 3.0 parts by weight per 100 parts by weight of said polyvinyl chloride or copolymers of a molding lubricant consisting essentially of trigylcerides containing hydroxy fatty acid residues obtained from the hydrogenation of at least one epoxidized natural fat or oil selected from olive oil, linseed oil, sunflower oil, safflower oil, peanut oil, corn oil, palm oil, tall oil, lard oil, herring oil, whale oil, soybean oil, rapeseed oil, or tallow.
Claim 9
Dependent Claim
88 words
A molding composition comprising polyvinyl chloride or copolymers predominantly containing vinyl chloride and about 0.3 to about 3.0 parts by weight per 100 parts by weight of said polyvinyl chloride or copolymers of a molding lubricant consisting essentially of trigylcerides containing hydroxy fatty acid residues obtained from the hydrogenation of at least one epoxidized natural fat or oil selected from olive oil, linseed oil, sunflower oil, safflower oil, peanut oil, corn oil, palm oil, tall oil, lard oil, herring oil, whale oil, soybean oil, rapeseed oil, or tallow.
Claim 10
Dependent Claim
21 words
The composition of claim 7 wherein said natural fat or oil is soybean oil, rapeseed oil, tallow or any mixture thereof.
Claim 11
Dependent Claim
33 words
The composition of claim 7 wherein said triglycerides are present in a quantity of about 0.5 to about 0.1 part by weight per 100 parts by weight of said polyvinyl chloride or copolymer.
Claim 12
Dependent Claim
33 words
The composition of claim 8 wherein said triglycerides are present in a quantity of about 0.5 to about 0.1 part by weight per 100 parts by weight of said polyvinyl chloride or copolymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-19 | 1990-07-21 | 1991-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-19 | 1994-07-21 | 1995-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-19 | 1998-07-21 | 1999-01-20 | $7700.00 | Window Closed / Lapsed |