US4780339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sized glass fibers and method for production thereof
Assignee: Ingredion Inc
•
Filing: 1987-12-08
•
Granted: 1988-10-25
•
Expires: 2007-12-08
Abstract
Abstract A method for sizing glass fibers upon formation is provided, employing a migration-resistant glass forming size composition which comprises an effective amount of a starch derivative having the formula ##STR1## wherein R is dimethylene or trimethylene, R' is a C 8 -C 18 alkyl or alkenyl group, and A is hydrogen or a monovalent cation.
Inventors
- 👤 Norman L. Lacourse
- 👤 Michael J. Hasuly
- 👤 Paulo C. Trubiano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:09
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/32; C03C25/321
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
122 words
An improved method for the sizing of glass fibers comprising forming said fibers in the presence of a glass forming size composition having a solids content of 2-20% by weight which comprises an aqueous dispersion of a starch and a non-ionic oil, wherein the improvement comprises employing an effective amount of a starch derivative in said aqueous dispersion, wherein said size comprises (a) about 1-12% by weight of a half-acid ester starch derivative having the formula ##STR5## wherein R is dimethylene or trimethylene, wherein R' is a C 8 -C 18 alkyl or alkenyl group, and A is a hydrogen or a monovalent cation; (b) about 0.5-8% by weight of a non-ionic oil; (c) about 0-2% by weight of a cationic lubricant.
Claim 2
Dependent Claim
122 words
An improved method for the sizing of glass fibers comprising forming said fibers in the presence of a glass forming size composition having a solids content of 2-20% by weight which comprises an aqueous dispersion of a starch and a non-ionic oil, wherein the improvement comprises employing an effective amount of a starch derivative in said aqueous dispersion, wherein said size comprises (a) about 1-12% by weight of a half-acid ester starch derivative having the formula ##STR5## wherein R is dimethylene or trimethylene, wherein R' is a C 8 -C 18 alkyl or alkenyl group, and A is a hydrogen or a monovalent cation; (b) about 0.5-8% by weight of a non-ionic oil; (c) about 0-2% by weight of a cationic lubricant.
Claim 3
Dependent Claim
9 words
The method of claim 1, wherein R is dimethylene.
Claim 4
Dependent Claim
17 words
The method of claim 2, wherein R' is the C 8 -C 14 alkyl or alkenyl group.
Claim 5
Dependent Claim
26 words
The method of claim 1, wherein the starch derivative is the derivative of a high amylose corn starch having an amylose content of about 50-70% amylose.
Claim 6
Dependent Claim
18 words
The method of claim 1, wherein the starch derivative is the derivative of a converted, inhibited potato starch.
Claim 7
Dependent Claim
35 words
The method of claim 1, wherein 2-6% of the starch derivative is present in the size composition and the non-ionic oil is present in an amount ranging from about 25-75% based on the starch concentration.
Claim 8
Dependent Claim
22 words
The method of claim 6, wherein the non-ionic oil is selected from the group consisting of a vegetable, animal, and mineral oil.
Claim 9
Dependent Claim
12 words
The sized glass fiber produced according to the method of claim 1.
Claim 10
Dependent Claim
106 words
A glass forming size composition which exhibits improved migration resistance and produces sized glass fibers having improved migration resistance and/or improved glass strand integrity comprising and aqueous dispersion having a solids content of 2-20% by weight and comprising (a) about 1-12% by weight of a half-acid ester starch derivative having the formula ##STR6## wherein R is dimethylene or trimethylene, R' is a C 8 -C 18 alkyl or alkenyl group, and A is a hydrogen or a monavalent cation; (b) about 0.5-8% by weight of a non-ionic oil; (c) about 0.005-2% by weight of an emulsifier; and (d) about 0-2% by weight of a cationic lubricant.
Claim 11
Dependent Claim
106 words
A glass forming size composition which exhibits improved migration resistance and produces sized glass fibers having improved migration resistance and/or improved glass strand integrity comprising and aqueous dispersion having a solids content of 2-20% by weight and comprising (a) about 1-12% by weight of a half-acid ester starch derivative having the formula ##STR6## wherein R is dimethylene or trimethylene, R' is a C 8 -C 18 alkyl or alkenyl group, and A is a hydrogen or a monavalent cation; (b) about 0.5-8% by weight of a non-ionic oil; (c) about 0.005-2% by weight of an emulsifier; and (d) about 0-2% by weight of a cationic lubricant.
Claim 12
Dependent Claim
24 words
The size composition of claim 9 characterized in that at least 20% of the starch derivative is present in a swollen, unburst granular form.
Claim 13
Dependent Claim
26 words
The size composition of claim 10, wherein R of the starch derivative is dimethylene and R' is the C 8 -C 14 alkyl or alkenyl group.
Claim 14
Dependent Claim
27 words
The size composition of claim 11, wherein the starch derivative is the derivative of a high amylose corn starch having an amylose content of about 50-70% amylose.
Claim 15
Dependent Claim
19 words
The size composition of claim 11, wherein the starch derivative is the derivative of a converted, inhibited potato starch.
Claim 16
Dependent Claim
22 words
The size composition of claim 11, wherein the starch derivative is an esterification product of a starch and octenyl succinic acid anhydride.
Claim 17
Dependent Claim
22 words
The size composition of claim 11, wherein the starch derivative is an esterification product of a starch and tetradecenyl succinic acid anhydride.
Claim 18
Dependent Claim
35 words
The size composition of claim 9, wherein 2-6% of the starch derivative is present in the composition and the non-ionic oil is present in an amount ranging from about 25-75%, based on the starch concentration.
References Cited (Backward Citations)
US2661349A
Cited
GB932685A
Cited
US3481771A
Cited
US3682685A
Cited
US3746558A
Cited
US3793065A
Cited
US3928666A
Cited
US4168345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |