Patent US5132353A successfully refreshed from Google Patents.
US5132353A
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US
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Molding composition
Assignee: SABIC Global Technologies BV
•
Filing: 1989-10-20
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Granted: 1992-07-21
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Expires: 2009-10-20
Abstract
Abstract A novel molding composition is disclosed which comprises polybutylene terephthalate, polyethylene terephthalate, and 20-85% of zinc oxide by total weight of said molding composition.
Inventors
- 👤 Lawrence R. Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:39
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
27 words
A molding composition which comprises: (a) polybutylene terephthalate resin; (b) polyethylene terephthalate resin; and (c) from 50-75% by total weight of said molding composition of zinc oxide.
Claim 2
Dependent Claim
27 words
A molding composition which comprises: (a) polybutylene terephthalate resin; (b) polyethylene terephthalate resin; and (c) from 50-75% by total weight of said molding composition of zinc oxide.
Claim 3
Dependent Claim
17 words
A molding composition as defined in claim 1, which includes from 55-65% by weight of zinc oxide.
Claim 4
Dependent Claim
21 words
A molding composition as defined in claim 1, wherein the average particle size of the zinc oxide is from 0.01-50 microns.
Claim 5
Dependent Claim
13 words
A molding composition as defined in claim 1, which includes an external lubricant.
Claim 6
Dependent Claim
22 words
A molding composition as defined in claim 1, which includes less than 30% by weight of total resins of an additive polymer.
Claim 7
Dependent Claim
12 words
A molding composition as defined in claim 4, which includes an antioxidant.
Claim 8
Dependent Claim
17 words
A molding composition as defined in claim 1, which contains 5-65% polybutylene terephthalate and 5-65% polyethylene terephthalate.
Claim 9
Dependent Claim
51 words
A molding composition which consists essentially of: (a) from 5-40% by total weight of composition polybutylene terephthalate; (b) from 5-40% by total weight of composition of polyethylene terephthalate; (c) from 0.01 to 0.5% by total weight of composition of a phenolic antioxidant; and (d) from 55-65% by weight of zinc oxide.
Claim 10
Dependent Claim
51 words
A molding composition which consists essentially of: (a) from 5-40% by total weight of composition polybutylene terephthalate; (b) from 5-40% by total weight of composition of polyethylene terephthalate; (c) from 0.01 to 0.5% by total weight of composition of a phenolic antioxidant; and (d) from 55-65% by weight of zinc oxide.
Claim 11
Dependent Claim
15 words
A molding composition as defined in claim 8, wherein the external lubricant is pentaerythritol tetrastearate.
Claim 12
Dependent Claim
13 words
A molding composition as defined in claim 9, wherein the antioxidant is tetrakis(methylene-3(3',5'-di-tert-butyl-4-hydroxyphenyl)propionate)methane.
Claim 13
Dependent Claim
18 words
A molding composition as defined in claim 1, which includes a flame retardant amount of a flame retardant.
Claim 14
Dependent Claim
18 words
A molding composition as defined in claim 8, which includes a flame retardant amount of a flame retardant.
Claim 15
Dependent Claim
11 words
An article which is molded from the composition of claim 1.
Claim 16
Dependent Claim
11 words
An article which is molded from the composition of claim 8.
Claim 17
Independent Claim
24 words
A method of imparting stain resistance to a polybutylene terephthalate-zinc oxide composition which comprises adding to said composition an effective amount of polyethylene terephthalate.
Claim 18
Independent Claim
24 words
A method of imparting stain resistance to a polybutylene terephthalate-zinc oxide composition which comprises adding to said composition an effective amount of polyethylene terephthalate.
Claim 19
Dependent Claim
24 words
A molding composition as defined in claim 1, wherein less than 50% by weight of the zinc oxide is replaced with an inorganic filler.
Claim 20
Dependent Claim
13 words
A molding composition as defined in claim 1, which includes an impact modifier.
Claim 21
Dependent Claim
19 words
A molding composition as defined in claim 1, which includes from 1-45% by weight of total composition of fiberglass.
Claim 22
Dependent Claim
29 words
A ceramic like molding composition which consists essentially of: (a) polybutylene terephthalate; (b) polyethylene terephthalate; and (c) from 50-75% by total weight of said molding composition of zinc oxide.
Claim 23
Dependent Claim
29 words
A ceramic like molding composition which consists essentially of: (a) polybutylene terephthalate; (b) polyethylene terephthalate; and (c) from 50-75% by total weight of said molding composition of zinc oxide.
Claim 24
Dependent Claim
34 words
A ceramic like molding composition which consists of: (a) polybutylene terephthalate; (b) polyethylene terephthalate; (c) an external lubricant; (d) an antioxidant; and (e) from 50-75% by total weight of said composition of zinc oxide.
Claim 25
Dependent Claim
34 words
A ceramic like molding composition which consists of: (a) polybutylene terephthalate; (b) polyethylene terephthalate; (c) an external lubricant; (d) an antioxidant; and (e) from 50-75% by total weight of said composition of zinc oxide.
Claim 26
Dependent Claim
32 words
A molding composition for making ceramic like articles which comprises: (a) polybutylene terephthalate resin; (b) polyethylene terephthalate resin; and (c) from 50-75% by total weight of said molding composition of zinc oxide.
Claim 27
Dependent Claim
32 words
A molding composition for making ceramic like articles which comprises: (a) polybutylene terephthalate resin; (b) polyethylene terephthalate resin; and (c) from 50-75% by total weight of said molding composition of zinc oxide.
Claim 28
Dependent Claim
33 words
A molding composition for making ceramic like articles which consists essentially of: (a) polybutylene terephthalate resin; (b) polybutylene terephthalate resin; and (c) from 50-85% by total weight of said composition of zinc oxide.
Claim 29
Dependent Claim
33 words
A molding composition for making ceramic like articles which consists essentially of: (a) polybutylene terephthalate resin; (b) polybutylene terephthalate resin; and (c) from 50-85% by total weight of said composition of zinc oxide.
Claim 30
Dependent Claim
14 words
A ceramic like molded article which is made from the composition of claim 21.
Claim 31
Dependent Claim
14 words
A ceramic like molded article which is made from the composition of claim 22.
References Cited (Backward Citations)
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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) | 1995-07-21 | 1996-01-20 | 1996-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-21 | 2000-01-20 | 2000-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-21 | 2004-01-20 | 2004-07-21 | $7700.00 | Window Closed / Lapsed |