Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1991-07-25
1993-08-03
Kight, III, John
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
4283139, 528272, 528288, 528293, 528297, 528301, 525 64, B32B 106, B32B 2500, C08G 6348, C08G 6391
Patent
active
052327736
ABSTRACT:
Blow-moldable polybutylene terephthalate resin compositions include a polybutylene terephthalate base polymer and an effective amount of between 0.01 to 5 parts by weight (based on 100 parts by weight of the polybutylene terephthalate base polymer) of an organosilane compound to allow blow-molding of hollow articles therefrom. Optionally, the compositions further include between 0.5 to 30 parts by weight, based on 100 parts by weight of the polybutylene terephthalate base polymer, of an olefinic copolymer of an .alpha.-olefin with an .alpha.,.beta.-unsaturated glycidyl ester. The organosilane and, when present, the olefinic copolymer increase the melt tension of the compositions to an extent that a tubular parison does not increase more than 25% in length when suspended under its own weight for 10 seconds. In this manner, the polybutylene terephthalate resin compositions may be satisfactorily used to form blow-molded hollow articles.
REFERENCES:
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patent: 4542174 (1985-09-01), Godlewski
patent: 4590259 (1986-05-01), Kosky et al.
patent: 4742109 (1988-05-01), Takahashi et al.
patent: 5112914 (1992-05-01), Mizuno et al.
patent: 5116906 (1992-05-01), Mizuno et al.
Patent Abstracts of Japan, unexamined applications, C field, vol. 13, No. 156, Apr. 14, 1989.
Itoh Haruyasu
Suzuki Masato
Culpeper Mullis Jeffrey
Kight III John
Polyplastics Co. Ltd.
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