Patent US4613654A successfully refreshed from Google Patents.
US4613654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyarylenesulfide complexes, processes for production and uses thereof
Assignee: Kureha Corp
•
Filing: 1985-05-15
•
Granted: 1986-09-23
•
Expires: 2005-05-15
Abstract
Abstract Novel polyarylenesulfide complexes are obtained by reacting a polyarylenesulfide with 0.05 to 20 mols of at least one strongly basic metal compound per 100 mols of arylenesulfide groups contained in the polyarylenesulfide under a uniformly dispersed condition, and have the properties defined in the following (A) through (C): (A) η*/η 0 *=3 to 100, wherein the η* and η 0 * stand for melt viscosities of the complex and the starting polyarylenesulfide, respectively; (B) ΔT c2 =(T c2 ) 0 -T c2 =10 to 100° C., wherein T c2 and (T c2 ) 0 stand for crystallization temperaturs of the complex and the starting polyarylenesulfide, respectively, observed when the polyarylenesulfide is cooled from its moten state; and (C) Δ(ΔE)=ΔE-(ΔE) 0 =5 to 75 kcal/mol, wherein ΔE and (ΔE) 0 stand for apparent flow activation energies of the complex and the starting polyarylenesulfide, respectively. The polyarylenesulfide complexes have higher melt viscosity with improved flow characteristics.
Inventors
- 👤 Takayuki Katto
- 👤 Toshitaka Kouyama
- 👤 Takao Iwasaki
- 👤 Zenya Shiiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:40
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/0204; C08G75/0286; C08G75/0295
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
197 words
A process for producing a polyarylenesulfide complex having the properties as defined in (A) through (C) below, which comprises reacting a polyarylenesulfide with 0.05 to 20 miles of at least one strongly basic metal compound selected from the group consisting of a hydroxide of an alkaline earth metal, an oxide of an alkaline earth metal and a hydrocarbyloxide of an alkali metal per 100 mols of arylenesulfide groups contained in the polyarylenesulfide said reaction being conducted with the polyarylenesulfide in the molten state at a temperature from its melting point to 400° C. and in the substantial absence of a liquid dispersant: (A) η*/η o *=3 to 100, wherein the η* and η o * stand for melt viscosities of the complex and the starting polyarylenesulfide, respectively; (B) ΔT c2 =(T c2 ) 0 -T c2 =10° to 100° C., wherein T c2 and (T c2 ) 0 stand for crystallization temperatures of the complex and the starting polyarylenesulfide, respectively, observed when the polyarylenesulfide is cooled from its molten state; and (C) Δ(ΔE)-ΔE-(ΔE) 0 =5 to 75 kcal/mol, wherein ΔE and (ΔE) 0 stand for apparant flow activation energies of the complex and the starting polyarylenesulfide, respectively.
Claim 2
Dependent Claim
197 words
A process for producing a polyarylenesulfide complex having the properties as defined in (A) through (C) below, which comprises reacting a polyarylenesulfide with 0.05 to 20 miles of at least one strongly basic metal compound selected from the group consisting of a hydroxide of an alkaline earth metal, an oxide of an alkaline earth metal and a hydrocarbyloxide of an alkali metal per 100 mols of arylenesulfide groups contained in the polyarylenesulfide said reaction being conducted with the polyarylenesulfide in the molten state at a temperature from its melting point to 400° C. and in the substantial absence of a liquid dispersant: (A) η*/η o *=3 to 100, wherein the η* and η o * stand for melt viscosities of the complex and the starting polyarylenesulfide, respectively; (B) ΔT c2 =(T c2 ) 0 -T c2 =10° to 100° C., wherein T c2 and (T c2 ) 0 stand for crystallization temperatures of the complex and the starting polyarylenesulfide, respectively, observed when the polyarylenesulfide is cooled from its molten state; and (C) Δ(ΔE)-ΔE-(ΔE) 0 =5 to 75 kcal/mol, wherein ΔE and (ΔE) 0 stand for apparant flow activation energies of the complex and the starting polyarylenesulfide, respectively.
Claim 3
Dependent Claim
22 words
The process according to claim 1, in which the polyarylenesulfide is a polyphenylenesulfide comprising 90% by mol or more of paraphenylenesulfide units.
Claim 4
Dependent Claim
205 words
A formed product made from a resin consisting essentially of a polyarylenesulfide complex produced by reacting a polyarylenesulfide with 0.05 to 20 mols of at least one strongly basic metal compound selected from the group consisting of a hydroxide of an alkaline earth metal, an oxide of an alkaline earth metal and a hydrocarbyloxide of an alkali metal per 100 mols of arylenesulfide groups contained in the polyarylenesulfide said reaction being conducted with the polyarylenesulfide in the molten state at a temperature from its melting point to 400° C. and in the substantial absence of a liquid dispersant, said polyarylenesulfide complex having the properties defined in (A) through (C) below: (A) η*/η o *=3 to 100, wherein the η* and η o * stand for melt viscosities of the complex and the starting polyarylenesulfide, respectively; (B) T c2 =(T c2 ) 0 -T c2 =10° to 100° C., wherein T c2 and (T c2 ) 0 stand for crystallization temperatures of the complex and the starting polyarylenesulfide, respectively, observed when the polyarylenesulfide is cooled from its molten state; and (C) Δ(ΔE)=ΔE-(ΔE) 0 =5 to 75 kcal/mol, wherein ΔE and (ΔE) 0 stand for apparent flow activation energies of the complex and the starting polyarylenesulfide, respectively.
Claim 5
Dependent Claim
205 words
A formed product made from a resin consisting essentially of a polyarylenesulfide complex produced by reacting a polyarylenesulfide with 0.05 to 20 mols of at least one strongly basic metal compound selected from the group consisting of a hydroxide of an alkaline earth metal, an oxide of an alkaline earth metal and a hydrocarbyloxide of an alkali metal per 100 mols of arylenesulfide groups contained in the polyarylenesulfide said reaction being conducted with the polyarylenesulfide in the molten state at a temperature from its melting point to 400° C. and in the substantial absence of a liquid dispersant, said polyarylenesulfide complex having the properties defined in (A) through (C) below: (A) η*/η o *=3 to 100, wherein the η* and η o * stand for melt viscosities of the complex and the starting polyarylenesulfide, respectively; (B) T c2 =(T c2 ) 0 -T c2 =10° to 100° C., wherein T c2 and (T c2 ) 0 stand for crystallization temperatures of the complex and the starting polyarylenesulfide, respectively, observed when the polyarylenesulfide is cooled from its molten state; and (C) Δ(ΔE)=ΔE-(ΔE) 0 =5 to 75 kcal/mol, wherein ΔE and (ΔE) 0 stand for apparent flow activation energies of the complex and the starting polyarylenesulfide, respectively.
Claim 6
Dependent Claim
20 words
A formed product according to claim 3 wherein the product is in the form of a film or a fiber.
References Cited (Backward Citations)
US4017450A
Cited
US4071509A
Cited
DE3143992A1
Cited
US4373091A
Cited
US4393197A
Cited
EP0103279A1
Cited
US4405745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |