US4452962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accelerated conditioning of silicone-modified polyester film to yield immediate high slip properties
Assignee: Corpus Christi Polymers LLC
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Filing: 1983-03-07
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Granted: 1984-06-05
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Expires: 2003-03-07
Abstract
Abstract The invention provides for a process for inducing immediate high slip properties in a silicone modified, unorientated polyester. The process comprises heating the polyester film, article, etc., in a fluid at a temperature of from about 70° C. to about 200° C.
Inventors
- 👤 Paul R. Ginnings
- 👤 Jack E. Prince
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:25
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08G; C08G63/00; C08G63/68; C08G63/695; C08G63/6954; C08G63/6956; C08G77/00; C08G77/42; C08G77/445; C08J2367/00; C08J2367/02
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
289 words
A method for imparting high slip properties to a silicone modified unoriented polyester, comprising the steps of: heating the silicone modified polyester at a temperature of from about 70° C. to about 200° C. so that a low static coefficient of friction is imparted thereto, wherein said silicone modified polyester was prepared by reacting a mixture of reactants comprising: (a) at least one reactant selected from the group consisting of (1) aromatic dicarboxylic acids having from 8 to 15 carbon atoms or C 1 to C 4 dialkyl esters thereof, and (2) aliphatic dicarboxylic acids having from 4 to 15 carbon atoms or the C 1 to C 4 dialkyl esters thereof wherein the reactant selected from group (1) constitutes from 100 to 50 mole percent of the total moles of said reactant (a) and the reactant selected from the group (2) constitutes from 0 to 50 mole percent of the total moles of reactant (a); (b) from about 100 to about 300 mole percent, based on the total moles of reactant (a) of at least one reactant selected from alkylene glycols containing from 2 to 10 carbon atoms; and (c) from about 0.5 to about 10 weight percent based on the weight of the polymeric reaction product of a dihydroxy terminated polydimethylsiloxane block copolymer of the general formula ##STR5## where n is an integer ranging from about 8 to about 15 and R and R' are divalent polymethylene oxide radicals corresponding to the general formula: ##STR6## respectively, wherein x is an integer ranging from about 2 to about 8 and y is an integer ranging from about 8 to 15 and wherein the dihydroxy terminated polymethylsiloxane block copolymer has a molecular weight ranging from about 1,600 to 5,500.
Claim 2
Independent Claim
289 words
A method for imparting high slip properties to a silicone modified unoriented polyester, comprising the steps of: heating the silicone modified polyester at a temperature of from about 70° C. to about 200° C. so that a low static coefficient of friction is imparted thereto, wherein said silicone modified polyester was prepared by reacting a mixture of reactants comprising: (a) at least one reactant selected from the group consisting of (1) aromatic dicarboxylic acids having from 8 to 15 carbon atoms or C 1 to C 4 dialkyl esters thereof, and (2) aliphatic dicarboxylic acids having from 4 to 15 carbon atoms or the C 1 to C 4 dialkyl esters thereof wherein the reactant selected from group (1) constitutes from 100 to 50 mole percent of the total moles of said reactant (a) and the reactant selected from the group (2) constitutes from 0 to 50 mole percent of the total moles of reactant (a); (b) from about 100 to about 300 mole percent, based on the total moles of reactant (a) of at least one reactant selected from alkylene glycols containing from 2 to 10 carbon atoms; and (c) from about 0.5 to about 10 weight percent based on the weight of the polymeric reaction product of a dihydroxy terminated polydimethylsiloxane block copolymer of the general formula ##STR5## where n is an integer ranging from about 8 to about 15 and R and R' are divalent polymethylene oxide radicals corresponding to the general formula: ##STR6## respectively, wherein x is an integer ranging from about 2 to about 8 and y is an integer ranging from about 8 to 15 and wherein the dihydroxy terminated polymethylsiloxane block copolymer has a molecular weight ranging from about 1,600 to 5,500.
Claim 3
Dependent Claim
32 words
A method according to claim 1, wherein said static coefficient of friction is 1.0 or less, wherein said silicone modified polyester is heated in a fluid which is inert to said polyester.
Claim 4
Dependent Claim
18 words
A method according to claim 2, wherein said temperature is from about 75° C. to about 105° C.
Claim 5
Dependent Claim
34 words
A method according to claim 3, wherein the amount of said silicone is from about 0.5 weight percent to about 6.5 weight percent, and wherein said static coefficient of friction is 0.5 or less.
Claim 6
Dependent Claim
43 words
A method according to claim 4, wherein said temperature is from about 80° C. to about 100° C., wherein said amount of silicone is from about 2 percent to about 6 weight percent, and wherein said coefficient of friction is 0.4 or less.
Claim 7
Dependent Claim
11 words
A method according to claim 5, wherein said fluid is water.
Claim 8
Independent Claim
278 words
A method for imparting high slip properties of a silicone modified polyester, comprising: making said silicone modified polymer by reaction of a mixture of reactants comprising: (a) at least one reactant selected from the group consisting of (1) aromatic dicarboxylic acids having from 8 to 15 carbon atoms or C 1 to C 4 dialkyl esters thereof, and (2) aliphatic dicarboxylic acids having from 4 to 15 carbon atoms or the C 1 to C 4 dialkyl esters thereof wherein the reactant selected from group (1) constitutes from 100 to 50 mole percent of the total moles of said reactant (a) and the reactant selected from the group (2) constitutes from 0 to 50 mole percent of the total moles of reactant (a); (b) from about 100 to about 300 mole percent, based on the total moles of reactant (a) of at least one reactant selected from alkylene glycols containing from 2 to 10 carbon atoms; and (c) from about 0.5 to about 10 weight percent based on the weight of the polymeric reaction product of a dihydroxy terminated polydimethylsiloxane block copolymer of the general formula ##STR7## where n is an integer ranging from about 8 to about 15 and R and R' are divalent polymethylene oxide radicals corresponding to the general formula: ##STR8## respectively, wherein x is an integer ranging from about 2 to about 8 and y is an integer ranging from about 8 to 15 and wherein dihydroxy terminated polymethylsiloxane block copolymer has a molecular weight ranging from about 1,600 to 5,500; and heating said silicone modified polyester at a temperature of from about 70° C. to about 200° C. to achieve said high slip.
Claim 9
Independent Claim
278 words
A method for imparting high slip properties of a silicone modified polyester, comprising: making said silicone modified polymer by reaction of a mixture of reactants comprising: (a) at least one reactant selected from the group consisting of (1) aromatic dicarboxylic acids having from 8 to 15 carbon atoms or C 1 to C 4 dialkyl esters thereof, and (2) aliphatic dicarboxylic acids having from 4 to 15 carbon atoms or the C 1 to C 4 dialkyl esters thereof wherein the reactant selected from group (1) constitutes from 100 to 50 mole percent of the total moles of said reactant (a) and the reactant selected from the group (2) constitutes from 0 to 50 mole percent of the total moles of reactant (a); (b) from about 100 to about 300 mole percent, based on the total moles of reactant (a) of at least one reactant selected from alkylene glycols containing from 2 to 10 carbon atoms; and (c) from about 0.5 to about 10 weight percent based on the weight of the polymeric reaction product of a dihydroxy terminated polydimethylsiloxane block copolymer of the general formula ##STR7## where n is an integer ranging from about 8 to about 15 and R and R' are divalent polymethylene oxide radicals corresponding to the general formula: ##STR8## respectively, wherein x is an integer ranging from about 2 to about 8 and y is an integer ranging from about 8 to 15 and wherein dihydroxy terminated polymethylsiloxane block copolymer has a molecular weight ranging from about 1,600 to 5,500; and heating said silicone modified polyester at a temperature of from about 70° C. to about 200° C. to achieve said high slip.
Claim 10
Dependent Claim
130 words
A method according to claim 7, wherein reactant (a) is selected from the group consisting of terephthalic acid and dimethyl terephthalate, wherein reactant (b) is ethylene glycol, consisting essentially of the polymeric reaction product of the mixture of reactants (a), (b), and (c), wherein reactant (c) is the dihydroxy terminated polydimethylsiloxane block corresponding to the general formula (I) in which the integer n ranges from about 10 to about 13, the integer x of the divalent radicals R and R' therein corresponding to the formulae (II) and (III) is 2 and the integer y of the divalent radicals R and R' therein corresponding to the formulae (II) and (III) ranges from about 10 to about 13, wherein the molecular weight of reactant (c) ranges from about 1,900 to about 2,400.
Claim 11
Dependent Claim
35 words
A method according to claim 8, wherein the amount of said silicone is from about 0.5 to about 6.5 weight percent, and wherein said heating temperature is from about 75° C. to about 105° C.
Claim 12
Dependent Claim
36 words
A method according to claim 9, wherein the amount of said silicone is from about 2 percent to about 6 weight percent, and wherein said heating temperature is from about 80° C. to about 100° C.
Claim 13
Dependent Claim
283 words
A high slip silicone modified, unorientated polyester article, comprising: a silicone modified polyester which was prepared by reacting a mixture of reactants comprising: (a) at least one reactant selected from the group consisting of (1) aromatic dicarboxylic acids having from 8 to 15 carbon atoms or C 1 to C 4 dialkyl esters thereof, and (2) aliphatic dicarboxylic acids having from 4 to 15 carbon atoms or the C 1 to C 4 dialkyl esters thereof wherein the reactant selected from group (1) constitutes from 100 to 50 mole percent of the total moles of said reactant (a) and the reactant selected from the group (2) constitutes from 0 to 50 mole percent of the total moles of reactant (a); (b) from about 100 to about 300 mole percent, based on the total moles of reactant (a) of at least one reactant selected from alkylene glycols containing from 2 to 10 carbon atoms; and (c) from about 0.5 to about 10 weight percent based on the weight of the polymeric reaction product of a dihydroxy terminated polydimethylsiloxane block copolymer of the general formula ##STR9## where n is an integer ranging from about 8 to about 15 and R and R' are divalent polymethylene oxide radicals corresponding to the general formula: ##STR10## respectively, wherein x is an integer ranging from about 2 to about 8 and y is an integer ranging from about 8 to 15 and wherein the dihydroxy terminated polymethylsiloxane block copolymer has a molecular weight ranging from about 1,600 to 5,500; said polyester article having been heated at a temperature of from about 70° C. to about 200° C. whereby said high slip is immediately imparted to said silicone polyester article.
Claim 14
Dependent Claim
283 words
A high slip silicone modified, unorientated polyester article, comprising: a silicone modified polyester which was prepared by reacting a mixture of reactants comprising: (a) at least one reactant selected from the group consisting of (1) aromatic dicarboxylic acids having from 8 to 15 carbon atoms or C 1 to C 4 dialkyl esters thereof, and (2) aliphatic dicarboxylic acids having from 4 to 15 carbon atoms or the C 1 to C 4 dialkyl esters thereof wherein the reactant selected from group (1) constitutes from 100 to 50 mole percent of the total moles of said reactant (a) and the reactant selected from the group (2) constitutes from 0 to 50 mole percent of the total moles of reactant (a); (b) from about 100 to about 300 mole percent, based on the total moles of reactant (a) of at least one reactant selected from alkylene glycols containing from 2 to 10 carbon atoms; and (c) from about 0.5 to about 10 weight percent based on the weight of the polymeric reaction product of a dihydroxy terminated polydimethylsiloxane block copolymer of the general formula ##STR9## where n is an integer ranging from about 8 to about 15 and R and R' are divalent polymethylene oxide radicals corresponding to the general formula: ##STR10## respectively, wherein x is an integer ranging from about 2 to about 8 and y is an integer ranging from about 8 to 15 and wherein the dihydroxy terminated polymethylsiloxane block copolymer has a molecular weight ranging from about 1,600 to 5,500; said polyester article having been heated at a temperature of from about 70° C. to about 200° C. whereby said high slip is immediately imparted to said silicone polyester article.
Claim 15
Dependent Claim
23 words
A high slip silicone modified polyester article according to claim 11, including immediately heating said polyester article after said article has been formed.
Claim 16
Dependent Claim
24 words
A high slip silicone modified polyester article according to claim 11, wherein said article has a static coefficient of friction of 1.0 or less.
Claim 17
Dependent Claim
20 words
A high slip silicone modified polyester article according to claim 13, wherein said polyester is heated in an inert fluid.
Claim 18
Dependent Claim
40 words
A high slip silicone modified polyester article according to claim 14, wherein said heating temperature is from about 75° C. to about 105° C., and wherein the amount of said silicone is from about 0.5 to about 6.5 weight percent.
Claim 19
Dependent Claim
20 words
A high slip silicone modified polyester article according to claim 15, wherein said coefficient of friction is 0.5 or less.
Claim 20
Dependent Claim
40 words
A high slip silicone modified polyester article according to claim 16, wherein said heating temperature is from about 80° C. to about 100° C., and wherein the amount of said silicone is from about 2 to about 6 weight percent.
Claim 21
Dependent Claim
21 words
A high slip silicone modified polyester article according to claim 17, wherein said static coefficient of friction is 0.4 or less.
Claim 22
Dependent Claim
15 words
A high slip silicone modified polyester article according to claim 18, wherein fluid is water.
Claim 23
Dependent Claim
23 words
A high slip silicone modified polyester article according to claim 19, including immediately heating said polyester article after said article has been formed.
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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |