US5032627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing hollow glass sphere fracture in thermoplastic resin by melt or bulk polymerization/extrusion
Assignee: Noveon IP Holdings Corp
•
Filing: 1989-03-31
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Granted: 1991-07-16
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Expires: 2009-03-31
Abstract
Abstract An in situ polymerized thermplastic resin incorporating hollow glass spheres, which are incorporated during polymerization of the resin, and a method of making a concentrate of hollow glass spheres dispersed in a thermoplastic resin with minimal sphere fracture by adding the spheres during polymerization of the resin.
Inventors
- 👤 Gary F. Wilson
- 👤 Yona Eckstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:43
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/22; C08K7/24; C08K7/28; C08J; C08J3/00; B; B29; B29B; B29B7/00; B29B7/80; B29B7/88; B29B7/90; C08G; C08G85/00; C08J3/20; C08J3/22; C08J3/226; C08J9/00; C08J9/32; Y; Y10; Y10S; Y10S264/00; Y10S264/06
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
39 words
A melt or bulk polymerized thermoplastic resin composition, having dispersed therein hollow glass spheres, said spheres being added to the resin during polymerization, and wherein said spheres are added after at least 50 percent of said resin has polymerized.
Claim 2
Dependent Claim
39 words
A melt or bulk polymerized thermoplastic resin composition, having dispersed therein hollow glass spheres, said spheres being added to the resin during polymerization, and wherein said spheres are added after at least 50 percent of said resin has polymerized.
Claim 3
Dependent Claim
44 words
A concentrate of hollow glass spheres dispersed in a thermoplastic resin made by the process of polymerizing the resin and adding the spheres during polymerization of the resin, and wherein said spheres are added after at least 50 percent of said resin has polymerized.
Claim 4
Dependent Claim
44 words
A concentrate of hollow glass spheres dispersed in a thermoplastic resin made by the process of polymerizing the resin and adding the spheres during polymerization of the resin, and wherein said spheres are added after at least 50 percent of said resin has polymerized.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the resin is a polyurethane.
Claim 6
Dependent Claim
49 words
The composition of claim 3 wherein the polyurethane is one containing from about 0.04 to about 35 moles chain extender for every mole of hydroxyl terminated polyol, and from about 0.95 to about 1.12 moles of diisocyanate per total number of moles of hydroxyl terminated polyol and chain extender.
Claim 7
Dependent Claim
40 words
The composition of claim 3 wherein the hollow glass spheres are one having a hydraulic crush strength of between about 5,000 and 10,000 psi and wherein said spheres are added after at least 90 percent of said resin has polymerized.
Claim 8
Dependent Claim
50 words
An improved method of making a concentrate of hollow glass spheres dispersed in a thermoplastic resin with minimal sphere fracture by polymerizing the resin and adding said spheres during the polymerization of said resin, and wherein said spheres are added after at least 50 percent of said resin has polymerized.
Claim 9
Dependent Claim
50 words
An improved method of making a concentrate of hollow glass spheres dispersed in a thermoplastic resin with minimal sphere fracture by polymerizing the resin and adding said spheres during the polymerization of said resin, and wherein said spheres are added after at least 50 percent of said resin has polymerized.
Claim 10
Dependent Claim
11 words
The method of claim 6 wherein the resin is a polyurethane.
Claim 11
Dependent Claim
49 words
The method of claim 7 wherein the polyurethane is one containing from about 0.04 to about 35 moles chain extender for every mole of hydroxyl terminated polyol, and from about 0.95 to about 1.12 moles of diisocyanate per total number of moles of hydroxyl terminated polyol and chain extender.
Claim 12
Dependent Claim
39 words
The method of claim 7 wherein the hollow glass spheres are ones having a hydraulic crush strength of between about 5,000 and 10,000 psi and including adding said spheres after at least 90 percent of said resin has polymerized.
Claim 13
Dependent Claim
40 words
An improved method of reducing the fracture of hollow glass spheres extruder compounded into a thermoplastic resin comprising: preceding the extruder compounding with the melt or bulk polymerization of the resin and adding the spheres to the resin during polymerization.
Claim 14
Dependent Claim
40 words
An improved method of reducing the fracture of hollow glass spheres extruder compounded into a thermoplastic resin comprising: preceding the extruder compounding with the melt or bulk polymerization of the resin and adding the spheres to the resin during polymerization.
Claim 15
Dependent Claim
18 words
The composition of claim 1 wherein the polymerization temperature is above the melting point of said thermoplastic resin.
Claim 16
Dependent Claim
18 words
The composition of claim 3 wherein the polymerization temperature is above the melting point of said polyurethane resin.
Claim 17
Dependent Claim
18 words
The composition of claim 5 wherein the polymerization temperature is above the melting point of said polyurethane resin.
Claim 18
Dependent Claim
16 words
The method of claim 6 including polymerizing said resin above the melting point of said resin.
Claim 19
Dependent Claim
16 words
The method of claim 9 including polymerizing said resin above the melting point of said resin.
Claim 20
Dependent Claim
10 words
A thermoplastic masterbatch resin comprising the composition of claim 1.
Claim 21
Dependent Claim
10 words
A polyurethane masterbatch resin comprising the composition of claim 3.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |