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Patent US4925890A successfully refreshed from Google Patents.
US4925890A
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US
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Process for processing thermoplastic polymers
Assignee: OSI Specialties Inc
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Filing: 1989-05-24
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Granted: 1990-05-15
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Expires: 2009-05-24
Abstract
Abstract A process for enhancing the fabrication of thermoplastic polymers entailing the addition of from 0.01 to 1 part, per hundred parts of thermoplastic polymer, of a processing aid, said processing aid comprising a processing additive, such as a silicon or a polyol, and a processing adjuvant, such as a phosphate.
Inventors
- 👤 Pak S. Leung
- 👤 Errol D. Goddard
- 👤 Fred H. Ancker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:36
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08L101/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
175 words
A composition consisting essentially of: (a) a thermoplastic polymer; (b) 1 to 30 parts, per hundred parts of thermoplastic polymer, of a mixture comprising: (i) a silicone-containing material having the formula: ##STR4## wherein R is an alkyl group containing from 1 to 12 carbon atoms, R' is a monovalent organic group containing at least one alkylene oxide unit and an alkoxy, hydroxy, epoxy, carboxy or amino group; x has a value of at least 1 to 500, and y has a value of from 2 to 300, and (ii) an organo derivative having at least one group having the formula: ##STR5## wherein Z is either an oxygen or sulfur atom, n is 0 or 1, and R" is selected from the group consisting of R"', ZR"', and ZH where R"' is an alkyl, aryl, alkenyl or alkynyl group containing from 1 to 24 carbon atoms; and (c) 0 to 30 parts, per hundred parts of thermoplastic polymer, of an antiblocking agent, wherein (i) and (ii) are present in a ratio of from 50:1 to 1:20.
Claim 2
Dependent Claim
175 words
A composition consisting essentially of: (a) a thermoplastic polymer; (b) 1 to 30 parts, per hundred parts of thermoplastic polymer, of a mixture comprising: (i) a silicone-containing material having the formula: ##STR4## wherein R is an alkyl group containing from 1 to 12 carbon atoms, R' is a monovalent organic group containing at least one alkylene oxide unit and an alkoxy, hydroxy, epoxy, carboxy or amino group; x has a value of at least 1 to 500, and y has a value of from 2 to 300, and (ii) an organo derivative having at least one group having the formula: ##STR5## wherein Z is either an oxygen or sulfur atom, n is 0 or 1, and R" is selected from the group consisting of R"', ZR"', and ZH where R"' is an alkyl, aryl, alkenyl or alkynyl group containing from 1 to 24 carbon atoms; and (c) 0 to 30 parts, per hundred parts of thermoplastic polymer, of an antiblocking agent, wherein (i) and (ii) are present in a ratio of from 50:1 to 1:20.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein from 1 to 10 parts, per hundred parts of thermoplastic polymer, of mixture (b) is present.
Claim 4
Dependent Claim
23 words
The composition of claim 1 wherein from 1 to 10 parts, per hundred parts of thermoplastic polymer, of an antiblocking agent is present.
Claim 5
Dependent Claim
13 words
The composition of claim 3 wherein the antiblocking agent is a diatomaceous silica.
Claim 6
Dependent Claim
18 words
The composition of claim 1 wherein the silicone-containing material has a molecular weight ranging from 1,000 to 20,000.
Claim 7
Dependent Claim
18 words
The composition of claim 1 wherein R is an alkyl group containing from 1 to 4 carbon atoms.
Claim 8
Dependent Claim
14 words
The composition of claim 1 wherein x has a value of 10 to 200.
Claim 9
Dependent Claim
14 words
The composition of claim 1 wherein y has a value of 2 to 20.
Claim 10
Dependent Claim
38 words
The composition of claim 1 wherein R is methyl, R' is C 3 H 6 (OC 2 H 4 ) a OH, x is 50 to 100, y is 4 to 6, and a is 5 to 10.
Claim 11
Dependent Claim
11 words
The composition of claim 1 wherein (ii) is dodecane phosphonic acid.
Claim 12
Dependent Claim
10 words
The composition of claim 1 wherein (ii) is zinc dithiophosphate.
Claim 13
Dependent Claim
12 words
The composition of claim 1 wherein (ii) is an acid phytate salt.
Claim 14
Dependent Claim
10 words
The composition of claim 1 wherein (ii) is phytic acid.
Claim 15
Dependent Claim
18 words
The composition of claim 1 wherein (i) and (ii) are present in a ratio of 2:1 to 1:2.
Claim 16
Dependent Claim
12 words
The composition of claim 1 wherein the thermoplastic polymer is a polyolefin.
Claim 17
Dependent Claim
11 words
The composition of claim 15 wherein the polyolefin is a polyethylene.
References Cited (Backward Citations)
JPS4915948A
Cited
US4371476A
Cited
JPS5946527A
Cited
JPS59113058A
Cited
US4554120A
Cited
US4552776A
Cited
US4522712A
Cited
US4535113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |