1991
DOI: 10.1002/actp.1991.010420205
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Phosphorus‐containing fire resistant polymers on the basis of cardotype bisphenols

Abstract: Aromatic homogeneous and mixed polyethers were synthesized on the basis of interaction of cardotype bisphenols, 4,4′‐difluorohenylsulfone and methyl‐bis(chloromethylphosphine) oxide. The presence of phosphorus atoms in the main polymer chain increases the fire resistance of these of polymers.

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Cited by 4 publications
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“…32 31 First responders account for just over 10 percent of the total employed in public administration. 32 Governor Ricardo Rosselló has stated publicly that no public employee will be harmed during the reorganization following passage of PROMESA, pointing to the "intent" of Law 122, which is restructuring the central government into fewer agencies; however, the law does not prohibit laying off employees should the need arise. Retail trade was the second-largest sector in the economy, followed by health care and social assistance.…”
Section: Establishments Employment and Industry Cluster Wage Location...mentioning
confidence: 99%
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“…32 31 First responders account for just over 10 percent of the total employed in public administration. 32 Governor Ricardo Rosselló has stated publicly that no public employee will be harmed during the reorganization following passage of PROMESA, pointing to the "intent" of Law 122, which is restructuring the central government into fewer agencies; however, the law does not prohibit laying off employees should the need arise. Retail trade was the second-largest sector in the economy, followed by health care and social assistance.…”
Section: Establishments Employment and Industry Cluster Wage Location...mentioning
confidence: 99%
“…According to data from the Puerto Rico Department of Labor and Human Resources, 57 percent of the nearly 85,000 people employed in this sector are with the Department of Education across the 78 municipalities. 33 Continued outmigration has likely decreased the overall number of students over time.…”
Section: Establishments Employment and Industry Cluster Wage Location...mentioning
confidence: 99%
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“…One of the resources required for the efficient production of goods and services is land. Other resources, referred to as factors of production, are labour, capital and entrepreneurial ability [1]. Land encompasses all natural resources obtainable from fishing, agriculture and mining.…”
Section: Introductionmentioning
confidence: 99%